I am upgrading soon to a 3000 series card and wanting to know if my case can fit it, someone told some cases may need an expansion slot. I dont know what that means I just need to know if one could fit
Expansion slots refer to those tiny metal lips you had to unscrew to put your current GPU in. Almost every case will fit a 3080Ti and below because they use the standard "dual slot" thickness. Some 3rd party cards will be thicker than the FE thickness because they might have bigger coolers requiring the use of a 3rd expansion slot.