Hey so I have a fairly crappy motherboard, it's a gigabyte 880gm rev 1.4. The best CPU it allows is a Phenom II X6 1100T But I currently have a Phenom II X4 840. I am using a r7 370 4GB GPU to game and lets say on, rust. I get average 30 frames high 40 low 25 with occasional frame drops that go to 0 and 1. I run the game at low settings pretty much. Would be upgrading my graphics card to a RX 580 8GB have a better framerate performance until I can get a new motherboard and cpu? I know it may bottleneck but I am pretty sure as long as I don't try to go gung ho on the graphics it should give me a pretty decent frame boost correct? Thanks guys!