Need help, Problem OC Asus EAH4890

[alien1357]

I can't overclock my memory at all with this thing. Everytime i do i get these weird flickering on my screen. I can OC just the core all the way up to 1000mhz and it's no problem, everything runs fine, but as soon as i up just 1mhz on my memory, I get the weird flickering. Here is the best part, the flickering happens everywhere EXCEPT when i am actually in a game. For example, every moment before i actually start playing crysis my screen would flicker (ie crysis menu screen, loading screen would flicker) as soon as i am in the game everything runs fine. Does anyone know why? or knows how to fix it? Did i get a bad card? or is it something else? I've tried many different drives ,from both the asus and ati, both the newest and some older ones. Any help would be appreciated.

 

Windows 7 Ultimate (64 bit)

AMD Phenom II x4 955

Asus M4A79XTD EVO

Asus EAH4890

2gb X 2 G.skill DDR1600