Hello, My 2 cents. My config : - ROG STRIX X570-E Gaming with BIOS 3405 (AGESA V2 PI 22.214.171.124) - Ryzen 2 : 3800XT - Vega 64 LC - Windows 10 20H2 - Adrenalin 21.2.2 Evidently, I only have a good motherboard but not the right graphic card nor the CPU. I decided to test nonetheless, so I clicked in the "ReSize BAR" BIOS menu entry. It is like in this screenshot from PhazDelta. I then booted to Windows and like Espionage724, I have the entry "large memory range" appeared in the graphic card Windows properties window. But in GPU-Z 2.65, only 256Mb on memory 3 and memory 7, like the OFF screenshot of reslore.