I overclocked my 460 HAWK (not by a lot), and tested in in 3dmark 11 with no crashes and i didnt notice any artifacts. But when i play assassins creed i get wierd glitches. Its hard to explain so i took some screenshots:
It isnt very noticable in the screenshots but during gameplay you can see it very well.
I know having the GPU Memory Clock overclocked too much can cause artifacts but these dont look like artifacts to me.
Artifacting---To put it simply it is when lines, circles, textures, etc. appear on the screen. This is usually caused by too high temps or setting clock speeds to high.
So you think what i have are artifacts? My card isnt too hot and the oc is mediocre at best. I tried downclocking it a bit and it still does the same thing! Also, i dont know if its related, but sometimes the nvidia driver crashes and then starts again.