Meshroom S V2 Dual 240/280mm Custom Loop Water Cooling Installation Guide

Modified on Fri, Aug 8 at 6:37 PM

Part 1：Hardware Compatibility & Warranty Considerations

Modifying your GPU or case to accommodate an AIO custom loop may void manufacturer warranties. Always check your GPU vendor’s RMA policy before disassembly.
Select reputable water-cooling brands with clear leak-protection guarantees and strong support policies.
Be aware: users assume full responsibility for hardware damage resulting from installation errors or accidents.

Meshroom S V2 supports dual-radiator setups, but maximizing radiator space impacts motherboard and GPU compatibility:

Motherboards: Only ITX or DTX boards fit without obstructing front radiator mounts. （ATX/mATX boards will block radiator clearance.）
Power Supplies: Use SFX or SFX-L units; （standard ATX PSUs are too large for the reduced PSU bay.）
GPU Water Blocks: High-end GPUs can be used with custom water-block modifications. Confirm block-to-GPU port alignment and block dimensions before ordering; sizes vary by brand.
Pump: Select a compact pump whose mounting holes match the case standoffs. Opt for flexible, custom-length cables to ease routing in tight spaces.
Radiator & Fan Thickness: Choose radiator thickness based on GPU block clearance (details in Step 4).

(Before motherboard installation)

Detach the middle frame support column (Spacer) and reposition the motherboard tray to 4-slot GPU mode.。
Move the GPU bracket inward to maximize space for the rear radiator.

Remove front and side brackets to prepare for radiator mounting.

Mount the pump using designated holes.Tip: Use flexible custom cables (silicone/braided) for easier cable management in tight spaces.

Install your modified GPU into the case.
Attach the water block and connect hoses using the correct fittings for your pump and block ports.
Note: GPU block modifications may void warranties and carry inherent risks—proceed at your own discretion.

We recommend one of two radiator + fan stacks on the GPU side:

Option A: 27 mm radiator + 25 mm fan (max. GPU thickness ≤ 21 mm) [Max radiator and fan thickness is 55mm]
Option B: 17 mm radiator + 25 mm fan (max. GPU thickness ≤ 31 mm)[Max radiator and fan thickness is 45mm]

You may choose a 240 mm or 280 mm side radiator. Adjust mounting depending on tube length and material (soft vs. hard tubing):

Method 1: Use two dedicated side‑radiator brackets.
Method 2: Mount one bracket and secure the other side of the radiator directly to existing side‑panel screw holes.

Build Example:

1、Mount 240/280mm radiator to the bracket before attaching it to the chassis.

2、Orient radiator ports UPWARD to clear space for the pump below.

3、Plan tubing routing toward the rear compartment.

Images sourced from Reddit: @hau_n @Available-Cap7401

Refer to community builds for inspiration on optimal soft‑tube or hard‑tube routing. Avoid sharp bends and ensure smooth flow.

Fitting dual radiators in an SFF chassis yields diminishing returns. Balance cooling gains against build complexity.
DIY is as much about planning as execution—map out each step beforehand and enjoy the process!
Always double‑check clearances at each stage to avoid last‑minute fitment issues.

Reddit source:@https://www.reddit.com/r/sffpc/