Finding the best short depth rackmount chassis can be challenging due to the limited space and specific compatibility needs. The top pick, In-Win IW-RF100-S315, stands out for its compact size and reliable power supply, making it ideal for tight server setups. The Rackchoice 4U Rackmount offers extensive drive bays for those needing more storage, while the RackChoice 1U Mini-ITX excels for ultra-compact builds. These options highlight the main tradeoffs: size versus expandability and power. Keep reading for a detailed breakdown of each model to find your perfect match.
Key Takeaways
- Size and depth are the primary constraints, influencing expandability and cooling options.
- Top picks balance compactness with sufficient features like drive bays and power support.
- Different use cases require different tradeoffs; small form factors often limit upgrade paths.
- Build quality and cooling support vary significantly, affecting long-term reliability.
- Price ranges are wide, with premium models offering better build and features, but value options providing solid performance for less.
More Details on Our Top Picks
Rackchoice 4U Rackmount Server Chassis with Multiple Drive Bays and Support for EATX/ATX/Micro-ATX/Mini-ITX Motherboards
This 4U chassis stands out for accommodating a wide array of motherboard sizes, from Mini-ITX to EATX, making it ideal for diverse server setups. Unlike the more compact Tupavco TP1833, it offers more expansion slots and larger GPU support, though it sacrifices some space efficiency. The included multiple pre-installed fans enhance cooling, crucial for high-performance components, but its size and weight could be a drawback in limited spaces. The support for large GPUs and extensive drive bays makes it a top choice for users building powerful servers, yet it may be overkill for simpler applications. Overall, this pick makes the most sense for those needing maximum flexibility and expandability in a short-depth chassis.
Pros:- Supports a wide range of motherboard sizes including EATX and Micro-ATX
- Robust cooling system with multiple pre-installed fans
- Supports large GPUs and extensive drive configurations
- Multiple USB ports for connectivity
Cons:- Heavy and takes up significant space
- Limited info on build material quality
- Power supply not included, requiring extra purchase
Best for: Enthusiasts or IT professionals building versatile, high-performance servers requiring multiple drives and large GPUs
Not ideal for: Small office setups or users with tight space constraints, due to its substantial size and weight
- Drive Bays:4×3.5″ + 3×3.5″ or 2×3.5″ + 2×2.5″
- Motherboard Support:EATX, ATX, Micro-ATX, Mini-ITX
- Dimensions:16.53″ D x 19″ W x 7″ H
- Expansion Slots:7 full height
- Cooling:3 x 12cm front fans + 2 x 8cm rear fans
- Power Supply:Standard ATX PS-2
- USB Ports:2 USB 3.0, 2 USB 2.0
- Max GPU Size:Supports large GPUs
Bottom line: This chassis is best suited for users seeking maximum flexibility and performance in a short-depth rackmount format.
3U Server Chassis – Compact 12″ Deep 19″ Rackmount ATX Computer Case (Back or Front Rack Mount) with 4 Bay, 1×5.25″, 3×3.5″ Bays, and 4 Full Expansion Slots – Tupavco TP1833
The Tupavco TP1833 is designed for users who need a compact yet versatile rackmount solution, with a depth of just 12 inches, making it ideal for constrained spaces. Compared to the larger Rackchoice 4U, it offers a smaller footprint but sacrifices some expandability and drive capacity. Its durable steel construction and multiple mounting options add to its versatility, though the power supply is not included, which can add to the overall cost. While perfect for small offices or network closets, it’s limited to ATX motherboards and standard supplies, so high-performance or custom builds may find it restrictive. This makes it an excellent choice for users who prioritize space-efficiency without sacrificing too much functionality.
Pros:- Compact 12-inch depth, ideal for tight spaces
- Multiple mounting options, including front, side, and back
- Heavy-duty steel construction enhances durability
- Supports multiple drive bays and expansion slots
Cons:- Power supply not included, additional cost required
- Limited to ATX motherboards and standard PSUs
- No pre-assembly, setup required
Best for: IT managers or small business owners needing a compact, reliable rackmount for basic server or networking tasks
Not ideal for: Power users needing extensive drive bays or high-end GPU support, due to its limited capacity
- Dimensions:19″ x 5.25″ x 11.8″
- Weight:10.6 lbs
- Material:Steel and aluminum handles
- Drive Bays:1x 5.25″, 3x 3.5″
- Expansion Slots:4 full height
- Fan Support:Up to 7 x 60mm fans (2 included)
- Compatibility:ATX motherboards, standard PSUs
Bottom line: This chassis fits well for space-constrained environments needing reliable, basic rackmount server capability.
RackChoice MicroATX/Mini-ITX 2U Rackmount Server Chassis max 9×3.5 Bay / USB3.0 with 2.0 Adapter Support ATX PSU Either top or Side Cooling Depth 17.7″ Black
This 2U rackmount chassis is ideal for users building with Micro-ATX or Mini-ITX motherboards, especially where space is limited. Its support for up to 9 drive bays (using Mini-ITX boards) or 7 (with Micro-ATX) offers flexible storage options, and the inclusion of USB 3.0 ports provides modern connectivity. Unlike larger, more expandable cases like the Rackchoice 4U, this model emphasizes compactness over extensive expansion, which may restrict high-end GPU support or heavy workloads. The support for standard ATX power supplies adds versatility, but the depth of 17.7 inches might still be a tight fit for some rack environments. It’s best suited for small-scale, space-efficient server or NAS builds, but less so for high-performance or enterprise use.
Pros:- Compact 2U height with support for Micro-ATX and Mini-ITX boards
- Supports up to 9 drive bays for flexible storage
- USB 3.0 ports for fast data transfer
- Supports standard ATX power supplies
Cons:- Depth of 17.7 inches can be tight in some racks
- Limited support for high-end GPUs
- No pre-installed cooling or fans included
Best for: Small business or hobbyist builders focusing on space-saving servers with moderate storage needs
Not ideal for: High-performance enterprise servers or GPU-intensive workloads, due to limited expansion and GPU support
- Max Drive Bays:9x 3.5″ (Mini-ITX) or 7x 3.5″ (Micro-ATX)
- Depth:17.7 inches
- Board Support:Micro-ATX, Mini-ITX
- USB Ports:2 USB 3.0
- Power Supply:Supports ATX PSU
- Material:Steel, Aluminum
Bottom line: This case is well-suited for small, space-efficient server builds with moderate expansion needs.
in-Win IW-RF100-S315 1U Short Depth Rackmount Server Chassis with 315W Gold PSU
The in-Win IW-RF100-S315 excels in tight spaces, offering a 1U rackmount form factor that is perfect for small server deployments. Its support for both Mini-ITX and ATX motherboards provides flexibility, similar to the Rackchoice 2U but with a much smaller footprint. The included 315W 80+ Gold power supply ensures efficiency, though its wattage may limit high-performance configurations. Lacking cooling fans, it relies on the system’s own airflow, which can be a concern for thermal management in demanding setups. This chassis is best for low- to mid-range servers or network appliances where space is a premium, but it’s less suited for high-power or high-heat components.
Pros:- Extremely compact 1U design maximizes rack space
- Supports both Mini-ITX and ATX motherboards
- Includes a reliable 315W 80+ Gold power supply
- Tool-free drive bays for quick upgrades
Cons:- Limited to low- to mid-range components
- No included cooling fans, potential thermal issues
- Power supply wattage may be insufficient for demanding builds
Best for: Small office servers or network appliances needing space-efficient, reliable chassis with integrated power supply
Not ideal for: High-performance workstations or gaming servers requiring extensive cooling and power, due to limited airflow and wattage
- Form Factor:1U Rackmount
- Supported Motherboards:Mini-ITX, ATX
- Drive Bays:2x 2.5″, 1x 3.5″
- Power Supply:315W 80+ Gold
- Cooling Support:Supports 3×40x28mm fans
- Max GPU Length:Not specified
Bottom line: This case is ideal for space-constrained environments needing reliable, low-power servers or network devices.
RackChoice 3U Rackmount Server Chassis with Liquid Cooling Support
This 3U chassis is designed for advanced server builds requiring liquid cooling, with support for radiators up to 360mm and three pre-installed 120mm fans, making it stand out from standard air-cooled options like the Rackchoice 4U. It supports multiple motherboard sizes—ATX, Micro-ATX, and Mini-ITX—providing flexibility for various configurations. While the liquid cooling capability offers superior thermal management for high-performance components, the limited power supply options (SFX or SFX-L) and GPU length restrictions make it less suitable for GPU-heavy workloads. This chassis is best suited for high-end, custom server environments where thermal performance is critical, but it’s less ideal for straightforward or budget builds.
Pros:- Supports liquid cooling with up to 360mm radiators
- Includes three pre-installed 120mm fans for excellent airflow
- Supports multiple motherboard sizes including ATX
- Flexible storage options with internal bays
Cons:- Limited to SFX and SFX-L power supplies
- GPU length restrictions may limit larger cards
- Designed specifically for high-performance cooling, less for standard setups
Best for: Enthusiasts or enterprise users needing advanced liquid cooling in a rackmount format
Not ideal for: Standard server users or those seeking high GPU support, due to size and power supply restrictions
Bottom line: This case is tailored for advanced, liquid-cooled server builds requiring optimal thermal management in a short-depth rackmount chassis.
RackChoice 2U Micro ATX Server Rackmount Case with USB 3.0 and Multiple Drive Bays
This 2U rackmount case stands out for its extensive storage options, supporting multiple drive bays that make it ideal for servers requiring significant data capacity. Compared to the RackChoice 2U Server Chassis, it offers more internal bays, but is slightly less deep at 400mm, which could limit larger component compatibility. Its front USB 3.0 ports provide fast connectivity, while the top and intake fans deliver adequate cooling for continuous operation. However, it only supports Micro ATX and mini-ITX motherboards, restricting upgrade paths, and requires an external power supply, adding to setup complexity.
Pros:- Supports multiple drive bays for extensive storage options
- Front USB 3.0 ports enable fast data transfer
- Effective cooling with multiple fans
Cons:- Limited to Micro ATX and mini-ITX motherboards
- Depth may restrict larger power supplies or components
Best for: Small business or home lab users needing versatile storage in a compact 2U form factor
Not ideal for: Enthusiasts with high-performance components requiring larger motherboards or integrated power supplies
- Form Factor:2U rackmount
- Motherboard Support:Micro ATX, mini-ITX
- Drive Bays:2 x 5.25″, 4 x 3.5″
- Power Supply Support:ATX PS2
- Front USB Ports:2 x USB 3.0
- Cooling Fans:1 x 120mm top, 2 x 80mm intake
Bottom line: This case works well for users prioritizing storage capacity over motherboard size flexibility.
IN-WIN IW-RF100S-S265 1U Short Depth Mini-ITX Rackmount Server Chassis, 265W
The IN-WIN IW-RF100S-S265 excels in tight spaces, offering a 1U form factor with a reversible design that improves access and maintenance. Its compact size makes it ideal where space is at a premium, unlike the larger 2U options like the RackChoice 2U Micro ATX. The included 265W power supply and tool-free drive bays simplify setup, while the support for mini-ITX ensures compatibility with small, efficient components. The shallow depth, however, limits component choices, especially for systems requiring more expansion or multiple GPUs, and it only supports mini-ITX boards, which restricts scalability.
Pros:- Ultra-compact size ideal for tight spaces
- Reversible design facilitates flexible port access
- Tool-free drive bays simplify maintenance
Cons:- No PCI expansion slots available
- Limited to Mini-ITX motherboards
- Shallow depth may restrict component selection
Best for: IT professionals deploying space-efficient, small-scale servers or networking devices
Not ideal for: Power users needing multiple expansion slots or larger motherboards
- Motherboard Support:Mini ITX
- Case Type:Rackmount
- Power Supply:Included, 265W 80+ Bronze
- Drive Bays:Tool-free for 2.5″ and 3.5″ HDDs
- Dimensions:9.84″ D x 16.93″ W x 1.71″ H
- Cooling Method:Air
Bottom line: Perfect for deployments where saving space outweighs the need for extensive expandability.
RackChoice 2U Server Chassis Short Depth 14.17″ with Front I/O and Support for Micro-ATX Motherboards
This RackChoice 2U chassis delivers a compact footprint at just 14.17 inches deep, making it suitable for constrained setups. It supports standard ATX power supplies and Micro-ATX motherboards, providing flexibility for basic server configurations. Its three 80mm fans promote airflow, but the design is quite plain, lacking advanced features like additional cooling options or expansive drive bays. Compared to the more feature-rich 3U Rackmount Chassis, this unit offers fewer bays and limited upgrade potential, fitting best into simple, space-limited applications where cost and simplicity matter most.
Pros:- Compact size fits in tight spaces
- Supports standard ATX power supplies
- Includes three 80mm fans for airflow
Cons:- Limited to one 3.5-inch drive bay
- Basic design with minimal advanced features
- No additional cooling options
Best for: Small office or basic server environments needing minimal expansion
Not ideal for: Enthusiasts or enterprise users requiring multiple drive bays or advanced cooling
- Form Factor:2U Rackmount
- Depth:14.17 inches
- Motherboard Support:Micro-ATX, Mini-ITX
- Power Supply Support:ATX PSU
- Fans:3 x 80mm
- Drive Bays:1 x 3.5-inch
Bottom line: Ideal for straightforward server needs where space-saving is key, but not for high-performance or expansion-heavy setups.
RackChoice 3U Rackmount Server Chassis ATX/Micro ATX/Mini-ITX with Front Fans and Support for ATX/SFX PSUs
This 3U Rackmount Chassis supports a range of motherboard sizes, including ATX, Micro-ATX, and Mini-ITX, making it highly versatile for various server configurations. Its multiple drive bays and pre-installed front and rear fans provide robust cooling, especially compared to smaller, less ventilated models like the IN-WIN IW-RF100S. The support for both ATX and SFX power supplies adds flexibility, but the depth of 420mm can limit larger GPUs unless the HDD bracket is removed. For users needing maximum drive capacity and cooling in a 3U form factor, this case offers a solid balance, although it may be overkill for simple setups.
Pros:- Supports multiple motherboard sizes and configurations
- Includes pre-installed fans for effective cooling
- Compatible with standard ATX and SFX power supplies
Cons:- Depth may restrict larger GPUs if HDD bracket is removed
- Larger size may not suit very tight spaces
- More complex setup compared to smaller units
Best for: Enthusiasts or small data centers requiring flexible motherboard support and high cooling capacity
Not ideal for: Users with limited space or minimal drive needs, as the 3U size might be excessive
- Drive Bays:8 x 3.5″ or 6 x 3.5″ + 2 x 2.5″
- Motherboard Compatibility:ATX, Micro-ATX, Mini-ITX
- Fan Support:2 x 120mm front, 1 x 80mm front, 2 x 60mm rear
- Material:Aluminum and zinc-coated steel
- PSU Support:ATX or SFX
- Depth:16.53 inches
Bottom line: A strong choice for versatile, well-cooled server setups that need support for various motherboard types.
RackChoice Server case MicroATX/Mini-ITX 2U Rackmount Server Chassis max 7×3.5 Bay / USB3.0 with 2.0 Adapter Support ATX PSU Either top or Side Cooling Depth 15.7″
This 2U rackmount chassis offers a balanced mix of affordability and functionality, supporting up to 7x 3.5″ drive bays and both Micro-ATX and Mini-ITX motherboards. Its 15.7-inch depth makes it suitable for constrained spaces, comparable to the RackChoice 2U Micro ATX, but with a slightly larger capacity and flexible cooling options. It supports standard ATX power supplies, which broadens compatibility, but its basic design and limited cooling features may not satisfy users with high heat output components. Overall, this case fits small, budget-conscious servers that don’t require extensive expansion or advanced cooling solutions.
Pros:- Supports up to 7 drive bays for storage expansion
- Compatible with standard ATX power supplies
- Supports both top and side cooling options
Cons:- Basic design without advanced cooling features
- Limited to moderate drive capacity
- No high-end features for demanding components
Best for: Small office or home servers with moderate storage needs and budget constraints
Not ideal for: High-performance or gaming servers requiring dedicated cooling and multiple GPU support
- Motherboard Support:Micro ATX, mini-ITX
- Drive Bays:7 x 3.5″
- Depth:15.7 inches
- Power Supply Support:Standard ATX
- Cooling:Supports top or side cooling
Bottom line: Suitable for budget-minded users deploying small servers with moderate storage needs in tight spaces.
2U Support ATX Motherboard Rackmount Chassis Short Depth 13.38″ with Flex ATX PSU
This chassis stands out for its balance of space efficiency and flexible compatibility. With a depth of just 13.38 inches, it easily fits into tight rack environments, especially when compared to bulkier options like the Rackchoice 4U chassis, which offers more drive bays but at a significantly larger footprint. Its support for multiple motherboard sizes—ATX, Micro ATX, and Mini ITX—makes it versatile for various configurations. The inclusion of front USB 3.0 ports enhances connectivity, while the metal construction promises durability. However, the limited cooling options and absence of a handle for portability are notable tradeoffs, especially if high airflow or mobility is required. This pick makes the most sense for users needing a space-saving, flexible rackmount chassis without extensive cooling needs or frequent transportation.
Pros:- Compact 2U design maximizes space efficiency
- Supports multiple motherboard sizes and storage configurations
- Front USB 3.0 ports for easy external connectivity
- Durable metal construction
Cons:- No handle for portability, making physical movement cumbersome
- Limited cooling options could impact thermal management under load
- Depth may restrict larger or high-performance components
Best for: Small data centers or network closets requiring reliable, space-efficient server housing.
Not ideal for: Environments demanding high airflow or frequent transport, due to limited cooling options and no handle.
- Support Motherboard Size:ATX, Micro ATX, Mini ITX
- Drive Bays:1 x 3.25″, 5 x 2.5″
- Front USB Ports:2 x USB 3.0 (with USB 2.0 adapter)
- Depth:13.38 inches (340mm)
- Color:Black
- Material:Metal
- Weight:11 Pounds
- Dimensions:18.3″D x 19″W x 3.5″H
- Support Power Supply:Flex ATX PSU
Bottom line: Ideal for users prioritizing a compact, flexible rackmount chassis in fixed, space-constrained environments.
2U Rackmount Server Chassis Supports Mini ITX & Micro ATX Motherboards
This model excels in environments where space is at a premium, matching the compact depth of the Rackchoice 1U chassis but offering more room for storage and cooling. Its 13.78-inch depth makes it suitable for shallow cabinets or mobile racks, similar to the Rackchoice 1U, yet it supports larger drive configurations, including three 3.5″ HDD bays and a 2.5″ SSD, providing more storage flexibility. Dual 80mm fans with a removable filter ensure better airflow compared to the generally minimal cooling of the Rackchoice 1U, though it still lacks the extensive cooling options of larger chassis. Its compatibility is limited to Micro ATX and Mini ITX boards, which may restrict high-performance builds. This chassis makes the most sense for users needing a shallow, portable case with good cooling and flexible storage but not requiring high-end components or extensive expansion.
Pros:- Extremely shallow 13.78-inch depth fits shallow cabinets
- Effective cooling with dual 80mm fans and removable filter
- Supports multiple drives for flexible storage options
- Broad compatibility with Micro ATX and Mini ITX motherboards
Cons:- No included power supply, requiring additional purchase
- Limited to smaller motherboard sizes, restricting high-end builds
- Deep customization may require technical skill
Best for: Mobile server setups or small office environments needing reliable, space-efficient storage.
Not ideal for: High-performance or gaming builds that require larger motherboards, as it only supports Micro ATX and Mini ITX.
- Form Factor:2U Rackmount
- Dimensions:13.78 inches deep
- Motherboard Compatibility:Mini ITX, Micro ATX
- Drive Bays:3 x 3.5″ HDD, 1 x 2.5″ SSD
- Power Supply Support:Standard ATX, up to 14 cm deep
- Cooling:Two 80mm fans with removable filter
- Material:Metal
- Color:Black
- Weight:11 lbs
Bottom line: Perfect for users needing a shallow, portable chassis with decent airflow and flexible storage options for small or mobile environments.
Rackchoice 1U Compact Server/Desktop mini-ITX Chassis – Supports Mini-ITX Motherboard, Type-C & USB3.0, Black
This 1U chassis emphasizes ultra-compactness, making it ideal for dense server racks or desktop environments where space is extremely limited. Compared to the larger 2U options like the Rackmount chassis, it sacrifices some expandability for size, supporting only a single 3.5″ HDD or two 2.5″ SSDs, but its aluminum construction offers excellent durability and heat dissipation. Its support for Mini-ITX motherboards aligns with the needs for small, efficient builds, although it does not include a CPU cooler, requiring users to select low-profile options. The cooling system with two inlet fans (expandable to three) provides decent airflow for such a small case, but it may not be suitable for high-performance or heavily loaded systems. This case makes the most sense for users prioritizing space efficiency in small server or desktop applications where component expandability is secondary.
Pros:- Extremely compact and space-efficient design
- Supports Mini-ITX motherboards for small builds
- Durable aluminum construction with a sleek appearance
- Expandable cooling with up to 3 fans
Cons:- No included CPU cooler, requiring additional purchase
- Limited drive bay options restrict storage capacity
- Fans may need upgrading for higher airflow requirements
Best for: Home labs, compact desktop servers, or space-constrained racks needing reliable performance in minimal space.
Not ideal for: High-performance or gaming builds that demand larger cooling solutions and more drive bays, as it’s very limited in expandability.
- Depth:9.84 inches
- Motherboard Support:Mini-ITX 6.7 x 6.7 inches
- Drive Bays:1x 3.5-inch HDD or 2x 2.5-inch SSDs
- Cooling:2x 40mm inlet fans (expandable to 3)
- Front Panel Ports:2x USB 2.0, Type-C & USB3.0
- Material:Black aluminum
- I/O Plate:Customizable
- Color:Black
- Support Power:Low-profile CPU coolers recommended
Bottom line: Best suited for users needing a tiny, durable case for small server or desktop tasks in tight environments.
