Gigabyte 1080 Ti Gaming 11G does NOT have a backplate : r/nvidia
Bykski Gpu Water Block Use For Gigabyte Gtx1080ti-gaming-oc-11g/gtx1080ti- gaming-11g /gv-n108tturbo-11gd Full Cover Copper Block - Fans & Cooling - AliExpress
GIGABYTE NVIDIA GTX 1080 Ti 11GB GAMING OC WHITE | 4K & VR READY! 889523010518 | eBay