4870 Artifacting in Crysis on Stock

[snipper_cr]

Well I just ran a test with GPU-z
GPU Clock 750/Memroy 900 (stock)
GPU Temp was 63.0
GPU Temp 1 was 63.0
GPU Temp 2 was 73.5
GPU Temp 3 was 68.5
(Which temp is which?)

I tried taking a screen shot but I got a black screen (which means everything is in the hardware at that point?).

Ill try lowering the memoroy see if that helps.

Edit: I lowered it down to 800mhz from 900 and it artifacted just as bad... ideas?