I currently have a msi r9 270x in my old gaming rig. It's an ASRock fma85x extreme4, a10 6700, cooler master 240mm aio water cooler,16gb(2x8gb) adata xpg ddr3 1600, 900watt antec ( Hcg-900) psu, 500gb SSD, and 3 160gb in raid . I want to upgrade my GPU to something with 4gb and that is significantly better than my current card. IDK if I would have a bottleneck with my current setup or not, and if it's even worth upgrading my card. I don't have the funds to replace CPU/Mobo/ram right now. I was even thinking about crossfire with another 270x but that's more because it'd look really cool than about performance . I'd more be buying a used card off eBay. Rough budget is $100, found a Rx 560 4gb oc for about that. Kind of prefer amd ( case is a Tt amd edition) but not a requirement. Any help would be awesome since GPU boss doesn't make it a clear answer for me.