Details EK-Quantum Vector TUF RX 6800/6900 Backplate - Black is a CNC machined retention backplate made from black anodized aluminum, that fits all EK-Quantum Vector RX 6800/6900 water blocks. Backplate for the EK-Quantum Vector TUF RX 6800/6900 The backplate covers the whole length of the graphics card's PCB, serves as an aesthetic add-on, and also provides passive cooling for the backside of the voltage regulation module (VRM), VRAM, and the GPU core.