RackChoice 3U Rackmount Server Chassis ATX/Micro ATX/Mini-ITX

In this review the RackChoice 3U Rackmount Server Chassis is evaluated as a purpose-built small rack case for compact servers and storage-heavy builds. The bottom line: this chassis is best for system builders who need flexible drive capacity and multiple motherboard form factors in a shallow 3U depth, with the biggest reason to buy being its support for up to eight 3.5in drives in a 420mm deep chassis while still allowing ATX, Micro-ATX or Mini-ITX boards. The review highlights practical tradeoffs such as PSU placement and GPU clearance so buyers know what to expect.

Key Features

• High drive density: Supports up to 8x3.5in drives or a mixed layout of 6x3.5in plus 2x2.5in, providing substantial internal storage without external bays.
• Multiple motherboard support: Accepts Standard ATX, Micro-ATX and Mini-ITX boards so it works for a range of server and workstation builds.
• Integrated cooling: Ships with 2x120mm and 1x80mm front fans plus 2x60mm rear fans pre-installed to help keep drives and components within safe temperatures in a rack environment.
• Compact depth: The 420mm (16.53in) chassis depth keeps the unit shallow enough for many 3U rack spaces while still fitting standard PSUs and multiple drives.
• ATX to SFX flexibility: Supports standard ATX PSUs or SFX with the included ATX-to-SFX bracket, giving options for quieter small-form builds.

Who It's For

This chassis is aimed at IT hobbyists, home lab users and small business operators who need a rackmount case with high internal storage capacity and support for common motherboard sizes. The real strength is for those building a dedicated storage server, backup unit or compact virtualization host where multiple 3.5in drives are required.

Users who need full-size graphics performance without compromise or those requiring deep, full-length GPUs with all drive cages installed should look elsewhere, since GPU length is limited to 250mm with the HDD bracket in place and a Standard ATX in this layout places some motherboard area under the PSU.

Pros & Cons

Pros

• Excellent drive capacity with either 8x3.5in bays or a hybrid 6x3.5in+2x2.5in configuration for flexible storage layouts.
• Versatile motherboard and PSU compatibility that supports ATX, Micro-ATX and Mini-ITX boards plus SFX with a bracket.
• Pre-installed fans and aluminum front bezel deliver a balance of cooling and a professional rack appearance.

Cons

• ATX motherboard placement can be partially under the PSU, limiting access to some connectors and occupying two PCI slot spaces.
• GPU clearance is limited to 250mm unless the HDD bracket is removed, which reduces drive capacity.

Specifications

Chassis height	3U rackmount
Chassis depth	420mm (16.53in) not including handle
Drive bays	8x3.5in or 6x3.5in + 2x2.5in
Motherboard support	ATX, Micro-ATX, Mini-ITX
Included fans	2x120mm + 1x80mm front, 2x60mm rear
GPU support	Max 128mm H x 250mm L with HDD bracket; 368mm L with bracket removed
PSU support	Standard ATX or SFX (use ATX-to-SFX bracket)

Our Verdict

The RackChoice 3U Rackmount Server Chassis is a practical, value-focused choice for builders who prioritize internal storage and flexible motherboard compatibility in a compact 3U package. It offers strong drive density and decent cooling out of the box, but buyers should accept the tradeoff of reduced motherboard access with an ATX layout and modest GPU length unless they remove drive cages. For a home lab or small server needing many 3.5in drives, it represents good value.

Frequently Asked Questions

Can this chassis use an SFX PSU?
Yes, it supports SFX PSUs when using the ATX-to-SFX bracket included with the chassis.

How many drives can it hold?
It supports up to 8x3.5in drives, or a mixed configuration of 6x3.5in plus 2x2.5in drives.

What GPU length will fit?
With the HDD bracket installed the maximum GPU length is 250mm; removing the HDD bracket increases clearance up to 368mm.