Hello Casper,
Is it the AMD REDEON RX 6800 reference card? Do you have the PCB photo of this card? Please send to us, we will check about it.
shopservice@bitspower.com.tw
We have the water blocks for AMD Radeon RX 6800 XT as following link.
https://shop.bitspower.com/index.php?route=product/search&search=690
