Bykski N-MS4090DGMSL-X Full-Cover GPU Water Block with Backplate for MSI GeForce RTX 4090 Gaming X Slim 24G, 5V A-RGB

Bykski N-MS4090DGMSL-X Full-Cover GPU Water Block with Backplate for MSI GeForce RTX 4090 Gaming X Slim 24G, 5V A-RGB

TL;DR: The N-MS4090DGMSL-X is a full-cover GPU water block engineered for the PCB of the MSI GeForce RTX 4090 Gaming X Slim 24G, and that card only. The cold plate is nickel-electroplated high-purity copper and contacts the GPU core, GDDR6X memory and VRM stages in a single pass. Inlet and outlet are...

Common Applications

The N-MS4090DGMSL-X is a full-cover GPU water block engineered for the PCB of the MSI GeForce RTX 4090 Gaming X Slim 24G, and that card only. The cold plate is nickel-electroplated high-purity copper and contacts the GPU core, GDDR6X memory and VRM stages in a single pass. Inlet and outlet are standard G1/4 BSPP and the block carries a 5V 3-pin addressable RGB strip. A matching backplate ships in the box. Compare the PCB photograph on the upstream Bykski page before installing.

Frequently Asked Questions

Q: Which exact graphics card does this block fit?

A: Only the MSI GeForce RTX 4090 Gaming X Slim 24G, per the Bykski product listing. Other RTX 4090 variants use different PCBs and require dedicated blocks.

Q: Is a backplate included?

A: Yes, a matching backplate ships in the box.

Q: What is the cold plate material?

A: Nickel-electroplated high-purity copper.

Q: What is the RGB connector and voltage?

A: 5V 3-pin addressable RGB. A 12V 4-pin RGB header will destroy the LEDs.

Q: What thread are the inlet and outlet?

A: Standard G1/4 BSPP, compatible with any mainstream water-cooling fitting.