My cousin and I both have an XFX Radeon HD 5670, his is 512MB GDDR5 and mine is 1GB GDDR5, he can play on higher settings on both WoW and CSGO and get higher framerate then me, which doesn't make sense to me unless the CPU is the problem. He has a 2 core 2 hyperthread 3.3GHZ i3, I have a core 2 quad q9300 2.5 GHZ... Might I also add that I have 2 gb more ram then he has, I have 8 and he has 6. He runs wow on high with 60+ fps and when I'm on good settings I get like 40.. I have a core 2 duo e8400 3 ghz dual core of course, should I swap that out for better performance on only these games?