hello and thanks for trying to help me hiwa, Im using the pc now with ocz 1600 6GB kit, and even this cheaper ram can go up to 1900 (not stable but it runs). I still cant get the G.Skill kit to even post at 1900, tried with 1.75v with 1.55v QPI & 1.5v NB. I have tried each stick by itself and they all run the same nothing stands out, I hope its not the cpu or motherboard but i dont think it is. I do have a new i7 920 coming hopefully before the weekend so i will also try it too.
Rampage II extreme
i7 920
ocz pc12800C7 6GB
Corsair HX1000 psu.
Bookmarks