ManDEVIL

so guys i just bought red dead redemption 2 and tried to run it on ultra setting on my rx570 i ran some benchmarks to see if the game was playable i was getting following results after my benchmark ended so i was surprised that my low end GPU performed really good (BTW i m running the game in resolution of 1366x768 because my monitor doesn't support 1080p) then i turned on my AMD overlay which tells me about my CPU usage,ram usage,GPU usage,VRAM and temperature of my GPU. The VRAM usage was 6805 MB but card says it only got 4GB VRAM. i read some discussions on vram usage but most of the people said your application will crash if it uses more vram than your GPU's got.Please help guys i don't know what to do i don't play much games but i want to know if this will harm my pc.