>>399357719
Retard frog.

VRAM is the amount of RAM your videocard has. If you exceed that, it has to do a lot of extra legwork dragging your textures through your system's RAM or worse, your hard drive pagefile. The cache that can get UP TO 20 GIGS is where it's all kept in case it needs to load it up without downloading it again.

Considering most faggots here have roughly 8GB of VRAM, and the place you stand, and your system usually consumes around 3GB of VRAM normally, you have reason to try and not make your avatars bad.

By the way, crunch compression is only for reducing filesize.