The Phanteks XT M3 is a compact chassis that features exceptional hardware compatibility and outstanding cooling performance. Boasting a large main chamber, this case offers plenty of space to install a Mini-ITX or Micro-ATX motherboard, large CPU cooler, and powerful graphics card. This small form factor case delivers excellent support for cooling hardware, including nine 120mm fans mounts and dedicated space for a 360mm radiator. Furthermore, you can build a showcase gaming PC that will match any aesthetic, thanks to the stylish yet functional front and top panels, a crystal-clear tempered glass side panel, and ample space for cable management to minimise clutter.

Phanteks XT M3 Micro-ATX PC Case at a Glance:

Micro-ATX PC case
Supports 4-slot GPUs up to 430mm long
Compatible with hidden connector motherboards
Mount up to nine fans 120mm fans
Dedicated space to mount a 360mm radiator at the top of the case
Excellent cable management options

Compact Powerhouse

The Phanteks XT M3 is ideal for building a powerful gaming PC within a small form factor. Measuring 460 x 235 x 370mm (DxWxH), this case boasts a compact footprint, meaning you’ll have plenty of room for a full suite of peripherals with this on your desk. However, the XT M3 still offers excellent compatibility with modern gaming hardware.

The main chamber of this case features ample room for Mini-ITX and Micro-ATX motherboards, including the latest rear connector motherboards like MSI Project Zero and ASUS BTF. What’s more, with four expansion slots and 430mm clearance, you’ll have lots of space for a top-tier GPU, such as an NVIDIA RTX 5090.

The excellent support for components continues in the rear of the case, with an innovative front PSU mount. By moving the power supply to the front, this case can accommodate ATX PSUs up to 150mm long, whilst offering huge amounts of room behind the motherboard for cable management and easy access to the rear-mounted connectors.

360° Cooling

A PC built with the Phanteks XT M3 will feature phenomenal thermal performance, thanks to its incredible support for cooling hardware. In fact, this small case offers mounting points for nine 120mm fans. The maximum configuration you can equip is three fans on the top and bottom panels, two fans mounted at the front, and a single fan on the rear. With all nine fans installed, there is almost zero gap between the fans, for highly efficient airflow.

In addition to this, the XT M3 provides excellent compatibility with both air and water coolers. The main chamber has a CPU clearance of 175mm, meaning you’ll have room to mount a cooler with a large heatsink. Additionally, the XT M3 includes a space at the top of the chassis dedicated to mounting a radiator up to 360mm long.

Zero to Sixty Styling

The Phanteks XT M3 is a fantastic canvas for gamers to build a PC with any aesthetic. The case boasts a simple, clean look, with a dual chamber design. The front and top of the main chamber utilise fine mesh panels, that are both elegant and functional. The side panel is constructed from crystal clear tempered glass, perfect for showing off your hardware and building skills.

Meanwhile, the spacious rear chamber is used to conceal components you’d prefer not to be seen, such as your power supply, storage drives, and cables. There is ample room in this cavity for gathering excess wires together for easy cable management, keeping your main compartment clutter-free. Furthermore, the shell is stylishly decorated, with a geometric design of peaks and valleys. These run from the base of the front panel to the rear of the top panel, creating a pleasing dual tone effect.

Mounting
Internal Monitor Mount	No
Case VESA Mountable	No
Lighting
Lighting / RGB	No
Back Connect
Back Connect	Yes
Back-Connect Compatibility	ASUS BTF, MSI Project Zero
Power Supply
PSU included	No
PSU Format	ATX
Power Supply Position	rear bottom
Case Features
I/O position	Front
Side panel	with window
Vertical GPU Mount	No
Adjustable Vertical GPU Bracket	No
Riser Cable Included	No
Front door	No
Cable Management	Yes
Filters Included	Yes
Noise dampening	No
Mainboard slide / tray	No
Transport System	No
Case
Case Type	Mini Case
Radiator Support
Max. Radiator Compatibility	1x Triple (360 mm)
Motherboard Support
Compatible Motherboard Formats	Micro-ATX, Mini-ITX
Max. Motherboard Format	Micro-ATX
Dimensions
Length / Depth	460 mm
Width	235 mm
Height	370 mm
Weight	5.57 kg
Expansion Slots
Expansion slots / PCI slots	4
Display
Display Included	No
Colour
Primary Colour	Black
Materials
Materials	ABS, Steel, Tempered Glass
Fan Header
Fan Controller / Fan Hub	No
Internal Dimensions
Max. CPU Cooler Height	175 mm
Max. GPU Length	430 mm
Max. PSU Length / Depth	150 mm
Drive Bays
Max. 2.5 Inch Drives	2
Max. 3.5 Inch Drives	1
Max. 5.25 Inch Drives	0
Hot swap drive bays	No
Fan Support
Max. Number of Fans	9
Features
Housing Feedthrough	No
External Ports
USB4 Gen 2x2 (external) Type C	1
USB 3.0 (external) Type A	1
Audio outputs & inputs	1x output / input comb. (3.5 mm jack, 4-pin, TRRS)
Card reader	No
Compatibility
Compatibility Note	Please refer to the manufacturer's compatibility information. You can find the latest overview on the manufacturer's website.

Phanteks XT M3 Mesh Black Fanless Micro-ATX PC Case

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