So, i'm currently going to stock my rig with a core 2 quad q9650,(Yes, i've checked the system requirements. My mobo the lenovo MTQ45NK supports proccesors with 12mb of L2 Cache, {Exactly what the C2Q uses}) and i'm currently running a c2d E7500, and a GT 710. Bottleneck Calculator told me 100%, which isn't ok. But the target game(s) i wanna play is Minecraft, and ROBLOX. And ROBLOX being the CPU dependent game, i'm sure a C2Q will do the trick. So what GPU should work? I also have a 280W PSU and the system is a prebuilt Lenovo M58 7360C12, with 8GB RAM ( og. 4) and a low profile case. Bummer.