Bykski GPU Water Block Backplate XFX RX 6800 6900 XT Speedster Merc 319 Overseas Edition

Tailored Fit for XFX Speedster 319

This full-coverage water block and backplate kit is engineered for the XFX RX 6800 XT and RX 6900 XT Speedster Merc 319 graphics cards. It targets enthusiasts building a custom liquid-cooling loop who want to replace the stock air cooler on these specific board designs. The electroplated copper cold plate contacts the GPU die, memory modules, and VRM array simultaneously.

Replaces the Factory Air Cooler

The block removes the original heatsink and fan assembly, moving heat directly into your loop for lower operating temperatures and quieter operation. The upgrade is worthwhile when you plan to push higher sustained clocks or simply want to eliminate the stock cooler's noise profile. A high-flow internal channel design supports running multiple blocks in series without excessive restriction.

Verify PCB Version Before Ordering

Compatibility is limited to the Version 1 circuit board used on the Speedster Merc 319; other revisions will not mount correctly. Compare your card's bare PCB against the reference gallery images to confirm the layout matches exactly. The kit uses standard G 1/4 inch threads, so ensure your existing fittings and tubing match that thread size.