Recently, i decided to upgrade to an i7 system with a 5870 or 5850(depending on my cash), but then my brother upgraded his system, so he gave me his intel core 2 quad q6700 until i got my new pc, i overclocked it to 3.5Ghz and i have noticed a huge performance increase(from my core 2 duo e8400, even at 4Ghz), so im going to buy it off him and just get new vga card and RAM, so im going to get a 5870 or 5850 (depending on cash again), so will the new graphics card bottleneck my cpu? Thanks.