The In Win B1, a compact Mini-ITX case, certainly hits a sweet spot for those aiming for a minimal footprint without completely sacrificing performance.

It’s an intriguing option, particularly for anyone looking to build a stylish, small form factor SFF PC that can blend seamlessly into a living room or a tight desk setup.

While it excels in its aesthetic appeal and incredibly small size, its thermal performance and component compatibility can be a tight squeeze, demanding careful consideration of your parts.

It’s less about raw power and more about smart, efficient design.

Here’s a quick rundown of some comparable SFF enclosures that might pique your interest:

Lian Li A4-H2O
- Key Features: Extremely compact, supports up to 240mm AIO liquid coolers, triple-slot GPU support, sandwich-style layout.
- Average Price: $150-$170
- Pros: Excellent cooling potential for its size, premium build quality, great GPU compatibility.
- Cons: Can be challenging to build in due to tight clearances, limited air cooling options, higher price point.
Cooler Master NR200P
- Key Features: Highly versatile Mini-ITX case, supports large air coolers and 240/280mm AIOs, includes both tempered glass and vented side panels, vertical GPU mounting option.
- Average Price: $90-$120
- Pros: Outstanding thermal performance for an SFF case, wide component compatibility, excellent value, easy to build in.
- Cons: Larger footprint than some ultra-compact ITX cases, only supports SFX/SFX-L PSUs.
Fractal Design Ridge
- Key Features: Console-inspired design, supports powerful GPUs, multiple cooling fan mounts, can be oriented vertically or horizontally.
- Average Price: $130-$150
- Pros: Sleek and modern aesthetic, good GPU compatibility for a console-style case, decent airflow with proper fan setup.
- Cons: Limited CPU cooler height, can be challenging for cable management, not as compact as the In Win B1.
SilverStone Milo 10
- Key Features: Ultra-slim Mini-ITX case, supports specific Flex ATX PSUs, designed for low-profile components.
- Average Price: $80-$100
- Pros: Exceptionally small form factor, ideal for HTPC or very space-constrained builds, elegant design.
- Cons: Very limited component compatibility low-profile CPU coolers, specific GPUs, challenging to build in, thermal performance is a concern with higher-power components.
NZXT H1 V2
- Key Features: Vertical small form factor, integrated 140mm AIO cooler, 750W 80 Plus Gold SFX PSU, and PCIe 4.0 riser cable included.
- Average Price: $300-$350 often bundled
- Pros: All-in-one solution simplifies building, clean aesthetic, decent thermal performance, small footprint.
- Cons: Higher initial cost due to bundled components, proprietary components limit upgrade options, vertical orientation may not suit all setups.
Streacom DA2 V2
- Key Features: Premium aluminum construction, modular design, supports various cooling configurations and PSU sizes, highly versatile internal layout.
- Average Price: $250-$300
- Pros: Exceptional build quality and aesthetics, highly customizable internal layout, good compatibility for an SFF case.
- Cons: Very high price point, building can be intricate due to modularity, thermal performance can vary greatly depending on configuration.
DAN Cases A4-SFX
- Key Features: One of the original ultra-compact SFF cases, sandwich layout for GPU and motherboard, premium build.
- Average Price: $200-$250
- Pros: Incredibly small, iconic design, high-quality manufacturing, good for a clean, minimalist build.
- Cons: Very limited CPU cooler height, can be challenging to build in, high price, often requires careful component selection.

The In Win B1 is a uniquely styled Mini-ITX case designed for those who prioritize aesthetics and an incredibly small footprint.

It targets users looking for a discreet HTPC, a compact office PC, or a small system for light gaming and general productivity.

Its distinctive hexagonal design and integrated stand set it apart from typical square or rectangular SFF cases, making it a conversation starter.

However, its small size comes with inherent limitations, especially concerning thermal performance and component compatibility.

As with any SFF build, understanding these trade-offs is crucial.

Table of Contents

Design and Aesthetics: A Standout Statement

The In Win B1 isn’t just another PC case. it’s a design statement.

Its hexagonal shape, combined with a built-in stand, gives it a unique, almost sculptural presence that sets it apart from the often utilitarian aesthetic of computer enclosures. This isn’t a case you hide under a desk. it’s meant to be displayed.

Unique Hexagonal Form Factor:
- The most striking feature is its six-sided chassis, which is a significant departure from standard rectangular designs. This shape, combined with rounded edges, provides a soft, modern look.
- It’s designed to be used vertically, sitting on its integrated stand, but can also lie horizontally. This flexibility allows it to blend into various environments, from a living room media center to a minimalist desk setup.
- Integrated Stand: The stand isn’t just an afterthought. it’s an integral part of the design, providing stability and elevating the case for airflow. This thoughtful integration enhances both aesthetics and functionality.
Premium Materials and Finish:
- Typically, In Win uses high-quality plastics and metals in their cases, and the B1 is no exception. The smooth, matte finish generally looks and feels premium, resisting fingerprints better than glossy surfaces.
- The perforated top and side panels are crucial for ventilation while maintaining the case’s clean lines. These perforations are often subtly integrated into the design, contributing to its sleek appearance.
Small Footprint and Versatility:
- Measuring roughly 108mm W x 231mm H x 238mm D, the B1 is incredibly compact, making it ideal for tight spaces.
- Its small size means it can disappear into an entertainment center or sit unobtrusively on a desk without drawing too much attention, until someone notices its distinctive shape.
- Portability: While not a “travel” case, its light weight and small dimensions make it easy to move between rooms or offices as needed.

Internal Layout and Component Compatibility: A Tight Fit

Building in the In Win B1 requires a strategic approach due to its compact internal volume.

Every millimeter counts, and component selection is paramount to a successful and well-performing build.

Mini-ITX Motherboard Support:
- As its name suggests, the B1 is exclusively designed for Mini-ITX motherboards. This is the smallest standard motherboard form factor, typically measuring 170mm x 170mm.
- Choosing a Mini-ITX board is the first step, and luckily, most modern chipsets Intel and AMD offer robust ITX options.
- RAM Clearance: Standard DIMM heights are usually fine, but extremely tall RGB RAM modules might brush against cables or the top panel, although this is less common with ITX boards.
CPU Cooler Limitations:
- This is arguably the most significant constraint of the In Win B1. It supports a maximum CPU cooler height of around 60mm.
- This severely limits your options to low-profile air coolers like the Noctua NH-L9i/a, Cooler Master MasterAir G200P, or Cryorig C7. These coolers are designed for silence and basic cooling, not high-performance thermal dissipation.
- Impact on CPU Choice: This cooler limitation means you’ll need to select a CPU with a lower Thermal Design Power TDP. Processors like the Intel Core i3/i5 non-K series or AMD Ryzen 3/5 non-X/G series are generally suitable. High-end i7/i9 or Ryzen 7/9 CPUs are unlikely to run optimally or quietly under heavy load in this case.
Integrated Power Supply:
- One of the standout features of the In Win B1 is its pre-installed 200W 80 Plus Gold Flex ATX power supply. This is a massive convenience as it simplifies the PSU selection process and saves internal space.
- The 200W capacity is perfectly adequate for a low-power Mini-ITX system without a dedicated graphics card. It can comfortably power an i3/R3 or i5/R5 non-K/X CPU, integrated graphics, an NVMe SSD, and a few peripherals.
- No Dedicated GPU Support: This is a crucial point. The In Win B1 does not have space for a discrete graphics card. This makes it unsuitable for serious gaming or GPU-intensive tasks like video editing or 3D rendering. It’s strictly for systems relying on integrated graphics iGPU from the CPU.
Storage Options:
- The case typically offers space for one 2.5-inch SSD/HDD. This is usually mounted on the internal frame.
- Given the prevalence of NVMe M.2 SSDs which mount directly onto the motherboard, the single 2.5-inch bay often becomes a secondary or optional storage solution. For most users building in 2024, a single high-capacity NVMe drive is usually sufficient.
- Cable Management: With limited space, cable management for the single 2.5-inch drive and general motherboard connections becomes a puzzle. Utilizing the included PSU’s custom-length cables is essential, and careful routing is necessary to maintain airflow and avoid obstructing components.

Thermal Performance: A Balancing Act

Given its minuscule size and reliance on a single pre-installed fan, the In Win B1’s thermal performance is, by design, constrained.

It’s built for efficiency and quiet operation under light loads, not for aggressive overclocking or sustained heavy computational tasks.

Integrated 80mm Fan:
- The case comes with a pre-installed 80mm fan located near the CPU area. This fan is crucial for exhausting warm air from the CPU cooler and the immediate motherboard components.
- The fan’s placement and size mean it’s primarily focused on the CPU zone.
- RPM and Noise: At idle or low loads, this fan typically runs quietly. Under heavier loads, especially with a CPU pushing its limits, the fan might spin up, becoming audible. The noise profile will also depend heavily on the chosen CPU cooler and the CPU’s power draw.
Airflow Design:
- The B1’s airflow relies on a somewhat passive intake from the various perforated panels around the case, with the 80mm fan acting as the primary exhaust.
- Positive/Negative Pressure: It doesn’t create a strong directional airflow path like larger cases with multiple fans. Instead, it relies on the CPU cooler pushing air through its fins, and the 80mm fan then moving that air out.
- Limitations of Passive Intake: With no dedicated intake fans, the case relies on natural convection and the exhaust fan to draw in fresh air. This works for low-TDP components but can struggle with heat buildup from more demanding CPUs.
Impact of Component Selection:
- Low TDP CPUs are Essential: As mentioned, pairing the B1 with a CPU that has a TDP of 65W or less and ideally lower is critical for maintaining acceptable temperatures and acoustic levels.
- Integrated Graphics: Since there’s no space for a discrete GPU, the heat generated primarily comes from the CPU and its integrated graphics. This simplifies the thermal challenge compared to a system with a power-hungry GPU.
- NVMe SSDs: While NVMe SSDs generate some heat, it’s generally manageable within the B1, especially with modern drives that are more thermally efficient.
Real-World Temperature Expectations:
- Idle Temperatures: Expect CPU temperatures to be in the 30-40°C range, depending on ambient room temperature.
- Light Load browsing, media: CPU temperatures might hover in the 40-55°C range.
- Heavy Load CPU stress test, video encoding: Temperatures could easily reach 70-90°C, especially with higher-TDP CPUs. This is where the chosen CPU cooler and its ability to dissipate heat within the limited space become critical.
- Thermal Throttling: Pushing the boundaries with a CPU that’s too powerful for the B1’s cooling capabilities will likely lead to thermal throttling, where the CPU automatically reduces its clock speed to prevent overheating, impacting performance.

Build Experience: A Test of Patience

Building in an SFF case is always a unique challenge, and the In Win B1, with its incredibly compact dimensions and integrated PSU, is no exception.

It’s a build that requires patience, careful planning, and sometimes, nimble fingers.

Pre-Installed PSU Convenience:
- The pre-installed 200W Flex ATX PSU is a double-edged sword. On one hand, it removes the hassle of finding a compatible PSU and ensures power delivery. On the other hand, its fixed position means you have less flexibility in routing cables or maneuvering components around it.
- The PSU cables are generally cut to appropriate lengths for an ITX board, which is a significant advantage in such a small enclosure.
Limited Workspace:
- Once you remove the outer shell, you’re greeted with a surprisingly dense internal frame. There’s very little room for hands or tools once the motherboard is installed.
- Sequential Installation: You’ll need to think several steps ahead. For example, it’s often easier to install the CPU, CPU cooler, and M.2 SSD onto the motherboard before mounting the motherboard into the case.
- Cable Routing is Key: With no dedicated cable management channels or much empty space, cable routing becomes a strategic puzzle. Every cable needs to be carefully folded, tucked, or routed to avoid obstructing airflow, touching fans, or blocking access to other components.
  - Zip ties and Velcro straps are your best friends here.
  - Pay special attention to the 24-pin ATX power cable and the 8-pin CPU power cable, as these are often the stiffest and most challenging to route.
Access to Ports and Headers:
- Depending on your motherboard’s layout, accessing certain headers e.g., USB 2.0, front panel audio after the motherboard is screwed in can be tricky.
- Some builders find it easier to connect these fiddly cables before fully seating the motherboard.
CPU Cooler Installation:
- As mentioned, the 60mm CPU cooler height limit dictates your choice. Many low-profile coolers are top-down designs, which are relatively easy to install.
- However, ensure the cooler’s dimensions don’t interfere with RAM slots or other motherboard components, even if it technically fits within the height limit.
Storage Installation:
- The single 2.5-inch drive bay usually involves screwing the drive onto a bracket or directly onto the chassis. This can be awkward if the motherboard is already in place.
- If you’re using an NVMe SSD, it’s a breeze as it mounts directly to the motherboard.
Front Panel Connectors:
- The front panel I/O USB, power button, audio wires are often short and delicate. Connecting them to the tiny motherboard headers can be a painstaking process. A good pair of tweezers can be invaluable.
Overall Time Investment: Don’t expect a quick build. Budget a few hours, especially if it’s your first SFF build. Take your time, double-check connections, and be prepared to troubleshoot if something doesn’t fit quite right. The satisfaction of a clean, functional SFF build in the B1 is the reward for the effort.

Pricing and Value: A Niche Proposition

The In Win B1 generally hovers around a specific price point, and understanding what you’re getting for that money is crucial for assessing its value. It’s not just a bare metal box. it includes a critical component.

Included 200W 80 Plus Gold Flex ATX PSU:
- This is a significant factor in the B1’s pricing. A standalone high-quality Flex ATX PSU can cost anywhere from $60 to $100+. The fact that it’s pre-installed and matched to the case’s power needs adds considerable convenience and value.
- The 80 Plus Gold rating signifies high efficiency, meaning less wasted energy and less heat generation, which is beneficial in a small case.
Premium Design and Build Quality:
- In Win often positions itself as a brand with an emphasis on design and material quality. The B1’s unique aesthetic and sturdy construction contribute to its price. You’re paying for the distinctive look and the compact engineering.
- Compared to generic rectangular SFF cases, the B1 offers a more refined and artistic presence.
Target Audience and Value Proposition:
- The B1 isn’t aiming for the mainstream budget builder. Its value is for those who:
  - Prioritize aesthetics and minimal footprint: If the case’s look is a primary driver, the B1 justifies its cost.
  - Need an HTPC or light office PC: For these use cases, the 200W PSU and integrated graphics support are sufficient, and the case’s design blends in well.
  - Want a “no-hassle” PSU solution: The included PSU simplifies the component selection process.
- Value Comparisons:
  - When compared to bare SFF cases like the Cooler Master NR200P which is larger but more versatile, typically ~$90-120 without PSU, the B1’s price might seem higher. However, factor in the included PSU, and the gap narrows.
  - For ultra-premium, ultra-compact SFF cases like those from DAN Cases or Streacom, the B1 is significantly more affordable, albeit with different capabilities e.g., no discrete GPU support.
Long-Term Value:
- The B1 is a niche product. Its inherent limitations no discrete GPU, strict CPU cooler height mean it’s unlikely to be a platform for significant hardware upgrades in the future unless you stick to very low-power integrated graphics builds.
- Its value is primarily in its “set it and forget it” nature for its intended purpose. If your needs change to include gaming or heavy productivity, you’ll likely need a completely new case.
Summary: The In Win B1 offers decent value for its specific niche. Its price reflects the included PSU, the unique design, and In Win’s brand positioning. It’s an investment in a very specific kind of SFF PC, one that prioritizes form over extreme function. If your primary goal is a tiny, good-looking system for media consumption or light computing, the B1 presents a compelling, albeit specialized, option.

Use Cases: Where the B1 Shines

The In Win B1 isn’t a general-purpose gaming rig or a workstation behemoth.

Its strengths lie in specific applications where its small size, quiet operation, and elegant design are paramount.

Home Theater PC HTPC:
- This is arguably the B1’s strongest suit. Its compact, console-like form factor allows it to blend seamlessly into a living room setup next to a TV or soundbar.
- It’s perfect for streaming 4K content, running media server software like Plex, or acting as a lightweight emulation station for older games.
- Quiet Operation: With a low-TDP CPU and minimal components, the B1 can be built to run very quietly, ensuring it doesn’t distract from your media consumption experience. The pre-installed 200W PSU is efficient and typically quiet.
- Aesthetics: Its unique design is far more appealing than a bulky tower or a traditional rectangular SFF case in a living room environment.
Office Productivity PC:
- For tasks like word processing, spreadsheets, web browsing, email, and video conferencing, the B1 provides more than enough power with a modern integrated graphics CPU.
- Minimal Desk Footprint: Its small size frees up valuable desk space, making it ideal for minimalist setups or smaller home offices.
- Professional Look: The clean design and premium finish make it suitable for a professional office environment, avoiding the “gamer PC” aesthetic.
Small Form Factor SFF Enthusiast Builds:
- For those who enjoy the challenge and aesthetic of building extremely compact systems, the B1 offers a unique canvas. It’s a testament to how small a functional PC can be.
- It appeals to builders who appreciate engineering constraints and finding efficient solutions within tight spaces.
- The sense of accomplishment from building a functional PC in such a tiny chassis is a reward in itself.
Light Gaming / Emulation:
- While it can’t handle modern AAA titles without a discrete GPU, the B1 is capable of light gaming using integrated graphics e.g., Intel Iris Xe, AMD Radeon Graphics on Ryzen APUs.
- This includes older or less demanding titles, indie games, and especially retro emulation. It can comfortably run emulators for consoles up to PS2/GameCube generation, depending on the CPU’s iGPU performance.
Dedicated Server Home Assistant, Pi-Hole Alternative:
- For users looking to run a low-power, always-on server for tasks like Home Assistant, Pi-Hole, or a small network-attached storage NAS solution if you only need one or two drives, the B1 can serve as a compact and energy-efficient platform.
- Its small footprint means it can be tucked away discreetly.

In summary, the In Win B1 is a specialist.

It excels when its core strengths – ultra-compact size, unique aesthetics, and low-power capabilities – align with the user’s specific needs.

It’s not a compromise for gaming or heavy work, but a deliberate choice for dedicated HTPC, office, or niche SFF projects.

Alternatives and Competition: The SFF Landscape

The Small Form Factor SFF PC market is a vibrant and competitive space, offering a diverse range of cases for various needs and budgets.

While the In Win B1 occupies a specific niche, it’s worth understanding what else is out there, especially if your requirements might expand beyond the B1’s capabilities.

Ultra-Compact, Integrated GPU Only Direct Competitors for HTPC/Office:
- SilverStone Milo 10/ML09: These are often even slimmer than the B1, explicitly designed for ultra-low-profile components and Flex ATX PSUs sometimes requiring you to buy one separately. They share the B1’s limitation of no discrete GPU. They are typically more utilitarian in design but offer similar HTPC capabilities.
- Custom Modded Cases/DIY Options: Some enthusiasts create custom wooden or 3D-printed cases for incredibly small systems, though this requires significant effort and expertise.
- NUCs Next Unit of Computing or Mini PCs: While not traditional cases, pre-built mini PCs like Intel NUCs, ASUS PN series, or AMD-based mini PCs offer similar or even smaller footprints with integrated hardware. They are often more expensive for equivalent performance but come fully assembled.
Compact with Discrete GPU Support Stepping Up in Performance:
- Cooler Master NR200P: This is the go-to recommendation for many SFF builders. It’s larger than the B1 but still very compact, offering phenomenal thermal performance, support for full-size GPUs, and excellent compatibility with CPU coolers and PSUs SFX/SFX-L. It’s also remarkably affordable.
- Lian Li A4-H2O: An ultra-compact sandwich-style case that supports a 240mm AIO liquid cooler and triple-slot GPUs. It’s pricier and more challenging to build in than the NR200P but offers extreme performance in a tiny package.
- Fractal Design Ridge: A console-style case that provides space for a full-length GPU, offering a sleek alternative to traditional SFF cubes. It’s great for living room gaming.
- DAN Cases A4-SFX: A legendary ultra-compact case known for its minimalist design and premium build, but it comes with a premium price tag and very strict component clearance.
- NZXT H1 V2: An all-in-one vertical SFF case that includes a PSU, AIO cooler, and riser cable, simplifying the build process. It’s a great option for beginners to SFF, but the bundled components mean a higher upfront cost.
Premium & Customizable SFF High-End/Enthusiast:
- Streacom DA2 V2: Known for its modularity and high-quality aluminum construction, allowing for highly customized internal layouts and various cooling solutions. It’s very expensive.
- Louqe Ghost S1: Another iconic premium SFF case with a unique “top hat” system for expanding cooling or storage. High price and often challenging to acquire.
Key Considerations When Comparing:
- Discrete GPU Need: This is the primary differentiator. If you ever plan to game beyond integrated graphics, the B1 is out.
- CPU Cooling: How much cooling potential do you need? Can you live with a low-profile air cooler, or do you need AIO support?
- PSU Type: Do you want an integrated PSU, or are you comfortable sourcing an SFX/SFX-L unit?
- Budget: SFF cases range from budget-friendly to extremely high-end.
- Build Difficulty: Some SFF cases are nightmares to build in. others are surprisingly easy.
- Aesthetics: Do you prioritize unique design like the B1 or more utilitarian functionality?

The In Win B1 fits a very specific niche.

If you are certain you only need integrated graphics and prioritize aesthetics and minimal size above all else, it’s a fantastic choice.

However, if there’s any chance your needs will grow to include dedicated graphics, or if you prefer more flexibility in component selection, then the slightly larger, more versatile SFF cases like the Cooler Master NR200P or Lian Li A4-H2O offer much better long-term value and upgrade potential.

Potential Drawbacks and Considerations: The Reality Check

While the In Win B1 offers a unique and attractive package, it’s crucial to acknowledge its inherent limitations.

These aren’t necessarily flaws, but rather trade-offs dictated by its ultra-compact design.

Understanding these can prevent disappointment and ensure it’s the right case for your specific needs.

No Dedicated Graphics Card Support:
- This is by far the biggest limitation. The B1 simply doesn’t have the physical space for a discrete GPU. This immediately rules it out for serious gaming, professional content creation video editing, 3D rendering, or any application that heavily relies on GPU acceleration.
- Your system’s graphical performance will be entirely dependent on the integrated graphics iGPU of your chosen CPU e.g., Intel Iris Xe, AMD Radeon Graphics on Ryzen APUs. While modern iGPUs are capable for 4K video playback, light gaming, and general desktop use, they are not a substitute for even a budget discrete GPU.
Strict CPU Cooler Height Limit:
- The 60mm CPU cooler height restriction severely limits your choice of CPU. You’re confined to low-profile air coolers, which are designed for silence and minimal heat dissipation rather than extreme performance.
- This necessitates choosing a lower TDP CPU ideally 65W or less, non-K/X series Intel Core i3/i5 or AMD Ryzen 3/5. Attempting to cool a high-end or overclocked CPU in the B1 will lead to thermal throttling and excessive noise.
Thermal Performance Under Load:
- While adequate for idle and light tasks, the B1’s thermal performance can be challenging under sustained heavy loads. The single 80mm exhaust fan and limited internal volume mean heat can build up quickly.
- Noise Levels: To compensate for heat, the CPU fan and the integrated 80mm case fan might spin up significantly, increasing noise levels under load. Achieving truly silent operation under heavy use is difficult.
Challenging Build Experience:
- Building in any SFF case is an exercise in patience, and the B1 is no different. The tight clearances, fixed PSU, and compact layout mean that cable management is a puzzle, and installing components can be finicky.
- This isn’t a case for first-time builders or those who dread intricate cable routing. You’ll need to plan your component installation order carefully.
Limited Upgradeability:
- Due to the fixed PSU and no GPU slot, future upgrades are largely limited to the CPU within the TDP/cooler constraints, RAM, and NVMe storage. You won’t be able to drop in a more powerful graphics card or a larger PSU down the line.
- If your computing needs evolve significantly, you’ll likely need to purchase a completely new case.
Price for the Niche:
- While the included PSU adds value, the B1’s price point can still feel a bit high for a case with such specific limitations. You are paying a premium for the unique design and ultra-compact form factor. If your primary goal is raw performance per dollar, other SFF cases offer more versatility for similar or slightly higher prices.
Single 2.5-inch Drive Bay:
- While NVMe M.2 drives are standard now, for those needing multiple 2.5-inch SSDs or traditional HDDs, the B1’s single bay is a limitation.

In conclusion, the In Win B1 is a purpose-built case.

It’s for the user who knows exactly what they want: a beautiful, extremely small, integrated graphics PC for HTPC, office, or light productivity.

If any of the above drawbacks are deal-breakers for your specific needs, then a different SFF case that offers more flexibility like those with discrete GPU support would be a more suitable choice.

Ideal Components for an In Win B1 Build: Maximizing Efficiency

Building within the In Win B1’s constraints means making smart component choices that prioritize low power consumption, efficient cooling, and integrated performance.

Here’s a breakdown of ideal components to ensure a balanced and well-performing system:

CPU Central Processing Unit:
- Focus on Low TDP: This is paramount. Look for CPUs with a Thermal Design Power TDP of 65W or less. Overclockable “K” series Intel CPUs or high-wattage “X” series AMD CPUs are generally unsuitable.
- Excellent Integrated Graphics: Since you can’t use a discrete GPU, choose a CPU with robust integrated graphics.
  - AMD Ryzen APUs e.g., Ryzen 5 5600G, Ryzen 3 5300G, newer Ryzen 7000/8000 series with RDNA graphics: These often offer superior integrated graphics performance compared to Intel, making them ideal for light gaming, emulation, and smooth 4K video playback.
  - Intel Core Processors with Iris Xe Graphics e.g., Core i5-12400, Core i3-13100, or newer non-K models: Intel’s Iris Xe graphics offer competitive performance for media and productivity, though often slightly behind AMD’s latest APUs for gaming.
- Example Processors:
  - AMD Ryzen 5 5600G: A fantastic balance of CPU power and iGPU performance for HTPC and light gaming.
  - Intel Core i3-12100 / i3-13100: Excellent four-core performance with capable integrated graphics for general productivity.
  - Intel Core i5-12400 / i5-13400 non-F: Good balance of cores and threads for more demanding productivity tasks, with decent iGPUs.
Motherboard Mini-ITX:
- Form Factor: Must be Mini-ITX 170mm x 170mm.
- Chipset: Choose a chipset appropriate for your selected CPU e.g., B550 or A520 for AMD Ryzen, B660/B760 or H610/H770 for Intel.
- Features:
  - M.2 Slots: Ensure it has at least one M.2 slot for your primary NVMe SSD. Many ITX boards now have two.
  - Wi-Fi/Bluetooth: Highly recommended for an HTPC or office PC to reduce cable clutter.
  - Rear I/O: Consider the number and type of USB ports, video outputs HDMI 2.0+ for 4K, and networking options.
- Layout: Look for a board where critical headers like front panel audio/USB are easily accessible even after installation in a tight case.
CPU Cooler:
- Height Limit: Strictly adhere to the ~60mm maximum height.
- Top-Down Airflow: Most compatible coolers are top-down designs, which help push air towards the motherboard components and out the exhaust.
- Popular Choices:
  - Noctua NH-L9i Intel / NH-L9a AMD: The gold standard for ultra-low-profile cooling. Excellent performance for its size and very quiet.
  - Cooler Master MasterAir G200P: Slightly taller but often offers better cooling than the L9 series, sometimes with RGB.
  - Cryorig C7 various versions: Another popular low-profile option.
RAM Random Access Memory:
- Capacity: 8GB is sufficient for basic HTPC/office use, but 16GB is highly recommended for smoother multitasking, especially with integrated graphics which utilize system RAM.
- Speed: For integrated graphics, faster RAM e.g., DDR4-3200MHz or DDR5-6000MHz, depending on your motherboard and CPU generation can significantly boost iGPU performance.
- Height: Standard height DIMMs are generally fine. Avoid extremely tall RGB sticks if possible, just to be safe with clearances.
Storage:
- Primary Drive: NVMe M.2 SSD: This is the most efficient and recommended storage solution. It mounts directly to the motherboard, requires no cables, and offers blazing fast speeds. A 500GB or 1TB drive is a good starting point.
- Secondary Drive Optional: 2.5-inch SATA SSD: The B1 supports one 2.5-inch drive. This can be used for additional storage if needed, but it adds to cable management. A 1TB or 2TB 2.5-inch SSD can be a cost-effective way to expand capacity for media libraries.

By carefully selecting components that align with the In Win B1’s design philosophy, you can build a stable, quiet, and surprisingly capable system that perfectly fits its intended role as a sleek, compact PC.

Conclusion: Is the In Win B1 Right for You?

The In Win B1 is not a case for everyone, and that’s precisely its charm.

It’s a highly specialized enclosure designed for a specific kind of PC enthusiast and a particular set of use cases.

If you’ve been reading this review, you’ve probably already identified whether you fall into that niche.

The In Win B1 is an excellent choice if:

Aesthetics are paramount: You want a PC that looks unique, stylish, and can be a design element in your living space or on a minimalist desk. Its hexagonal shape and integrated stand are truly distinctive.
Space is extremely limited: You need the absolute smallest possible footprint for your PC, whether it’s for an HTPC in a cramped media cabinet or an office PC where every inch of desk space matters.
You only need integrated graphics: Your computing needs are covered by modern integrated GPUs 4K video playback, web browsing, office tasks, light gaming, emulation. You have no intention of installing a discrete graphics card, now or in the future.
You prioritize quiet operation under light loads: With the right low-TDP components, the B1 can be built into a very quiet system, ideal for an HTPC where noise can be distracting.
You appreciate the challenge of SFF building: You enjoy the puzzle of optimizing component fit and cable management in a tiny space.
The included PSU simplifies your build: The pre-installed 200W 80 Plus Gold Flex ATX PSU is a convenience you value, saving you the hassle of sourcing a compatible unit.

However, the In Win B1 is NOT for you if:

You plan to game with a discrete graphics card: This is the absolute deal-breaker. There is no GPU slot.
You need powerful CPU performance: The strict CPU cooler height limit means high-TDP CPUs will thermal throttle and generate excessive noise.
You require extensive storage multiple drives: The single 2.5-inch bay is a limitation beyond NVMe M.2.
You want maximum upgradeability: Its limitations mean future hardware upgrades are severely restricted.
You’re on a very tight budget and want raw performance per dollar: Other, more versatile SFF cases offer better value for money, especially when factoring in the potential need for a discrete GPU.
You’re new to PC building and prefer an easy experience: The compact nature of the B1 can make the build process challenging and frustrating for novices.

In essence, the In Win B1 isn’t a jack-of-all-trades. it’s a master of its specific niche.

It offers a beautiful, minimalist, and incredibly compact solution for integrated graphics systems.

If your vision aligns with its strengths and you understand its limitations, the B1 can be the foundation for a truly elegant and effective small form factor PC.

Frequently Asked Questions

What is the In Win B1?

The In Win B1 is an ultra-compact Mini-ITX PC case known for its unique hexagonal design and small footprint, typically used for HTPCs or small office PCs.

Does the In Win B1 support a dedicated graphics card?

No, the In Win B1 does not have space for a dedicated graphics card.

It is designed for systems that rely solely on integrated graphics iGPU from the CPU.

What size motherboard does the In Win B1 support?

The In Win B1 exclusively supports Mini-ITX motherboards, which measure 170mm x 170mm.

What is the maximum CPU cooler height for the In Win B1?

The In Win B1 has a strict CPU cooler height limit of approximately 60mm. This requires the use of low-profile CPU coolers.

Does the In Win B1 come with a power supply?

Yes, the In Win B1 comes with a pre-installed 200W 80 Plus Gold Flex ATX power supply.

What type of power supply is included with the In Win B1?

It includes a 200W 80 Plus Gold Flex ATX power supply.

What kind of CPU should I use with the In Win B1?

You should use a CPU with a low Thermal Design Power TDP, ideally 65W or less, and strong integrated graphics e.g., AMD Ryzen APUs or Intel CPUs with Iris Xe graphics.

How many storage drives can the In Win B1 hold?

The In Win B1 typically supports one 2.5-inch SSD or HDD.

Most users will primarily rely on an NVMe M.2 SSD installed directly on the motherboard. Showtime Review

Is the In Win B1 good for gaming?

No, the In Win B1 is not suitable for serious gaming as it does not support discrete graphics cards.

It can handle very light gaming or emulation using integrated graphics.

What are the dimensions of the In Win B1?

The dimensions are approximately 108mm W x 231mm H x 238mm D, making it incredibly compact.

Is the In Win B1 easy to build in?

No, building in the In Win B1 can be challenging due to its extremely compact size and tight clearances. It requires patience and careful cable management.

What are the main benefits of the In Win B1?

Its main benefits are its unique aesthetic design, incredibly small footprint, and suitability for HTPC or office PC builds where a discrete GPU is not needed.

What are the main drawbacks of the In Win B1?

The main drawbacks include no discrete GPU support, very limited CPU cooler height, potentially challenging thermal performance under load, and restricted upgradeability.

Is the In Win B1 quiet?

With a carefully selected low-TDP CPU and proper CPU cooler, the In Win B1 can be very quiet at idle and under light loads. It may become audible under heavy CPU load.

Can I install an AIO liquid cooler in the In Win B1?

No, the In Win B1 does not have space for an AIO liquid cooler. It only supports low-profile air coolers.

What is the price range of the In Win B1?

The price of the In Win B1 can vary but typically falls in a mid-range for SFF cases, factoring in the included power supply.

Is the In Win B1 suitable for a Home Theater PC HTPC?

Yes, the In Win B1 is an excellent choice for an HTPC due to its small size, quiet operation, and elegant design that blends well with living room setups. Philips Hue Play Gradient Lightstrip Review

Can I use a regular ATX power supply with the In Win B1?

No, the In Win B1 comes with a pre-installed Flex ATX power supply and does not have space for a regular ATX or SFX power supply.

How is the airflow in the In Win B1?

Airflow relies on passive intake from perforated panels and a single 80mm exhaust fan near the CPU area.

It’s sufficient for low-power components but can be restrictive for higher TDP parts.

What kind of applications is the In Win B1 best suited for?

It’s best suited for home theater PCs HTPC, office productivity PCs, light web browsing, media streaming, and retro emulation.

Does the In Win B1 have RGB lighting?

No, the In Win B1 itself does not typically feature integrated RGB lighting.

Any RGB would come from components like the motherboard or CPU cooler, if compatible.

What are some alternatives to the In Win B1 if I need a discrete GPU?

Alternatives include the Cooler Master NR200P, Lian Li A4-H2O, Fractal Design Ridge, or NZXT H1 V2, all of which support discrete graphics cards.

Does the In Win B1 support vertical or horizontal orientation?

The In Win B1 is designed to be used vertically on its integrated stand but can also be placed horizontally.

Is the 200W PSU sufficient for modern integrated graphics CPUs?

Yes, a 200W 80 Plus Gold Flex ATX PSU is sufficient for modern low-TDP CPUs with integrated graphics, a single NVMe SSD, and RAM.

Can I upgrade the PSU in the In Win B1?

While technically a Flex ATX PSU could be swapped, it’s generally not recommended or necessary given the case’s power budget and the included PSU’s quality. Sony Zv E10 Review

How much RAM should I use in an In Win B1 build?

16GB of RAM is highly recommended for smooth operation, especially since integrated graphics utilize system memory. 8GB is sufficient for very basic tasks.

Is the In Win B1 made of premium materials?

In Win generally uses high-quality materials like sturdy plastics and metals, contributing to a premium feel and durable construction.

Does the In Win B1 include fans other than the PSU fan?

Yes, it typically includes one pre-installed 80mm exhaust fan.

Can I use a traditional hard drive HDD in the In Win B1?

You can install one 2.5-inch HDD, but there’s no space for larger 3.5-inch HDDs.

Where are the I/O ports located on the In Win B1?

The front I/O ports USB, audio, power button are usually located on one of the side panels for easy access when the case is oriented vertically.

In Win B1 Review