hi guys, my dad has a pentium e6500 45nm wolfdale cpu which he picked up last week for 80 bucks. not a bad upgrade from his old shitty celeron e1200 lol. hes has 2gb of 667mhz ram in dual channel and a brand new ati hd 5770 which i bought for him for fathers day. playing crysis on it on gamer spec at 1400 x 900 runs great, apart from every 10 - 20 seconds it significantly slows down when something explodes or enemys start shooting at him, it dosnt last long, usually about 1- 2 seconds and then it runs smooth again. my question is, is his cpu bottlenecking his graphics card, because im pretty sure a hd 5770 should handle gamer spec fine. or should he be more concerned about his ram. is 2gb enough? and im not so sure 667mhz is fast enough either. would he be better off buying 4gb of 1066mhz ddr2 ram or overclocking his cpu, what would relieve this bottleneck best, and how should he go about overclocking. thanks in advance