when i try to oc the frequency only goes down even if i just select ai boost by whatever percentage or the auto oc feature. my specs are as follows -
Fx-55
Asus a8n-sli deluxe
Corsair XMS pro ddr 500
2x XFX 6800gts
2x Raptors 36.7
western digital 200gig sata storage
koolance Exos liquid system
500w mdmm psu
cpu-300 water block
thermal paste
soundblaster audigy2 platinum pro
If anyone can help me oc this system it would be greatly appreciate for step-by-step procedures because i have tried everything

Fx-55
Asus a8n-sli deluxe
Corsair XMS pro ddr 500
2x XFX 6800gts
2x Raptors 36.7
western digital 200gig sata storage
koolance Exos liquid system
500w mdmm psu
cpu-300 water block
thermal paste
soundblaster audigy2 platinum pro
If anyone can help me oc this system it would be greatly appreciate for step-by-step procedures because i have tried everything