7970 overclocking: Extruded Polygons? Core or memory?

[BS Dave]

Simple question. I'm getting the odd extruded polygon in bf3 when playing. my 7970 is overclocked. is it likely to be the core or the memory?

it happens very rarely - has happened twice in fact.

Am i right in thinking it core?
Memory tends to be snow/wierd colours etc?

 

[BS Dave]

Man 42 views and no-one has an idea!!

 

[rare]

I think I would be tempted to put it back to stock and see how that goes. Its not like its going to be lacking in performance at stock

 

[Mattuk69]

Have you run any stability tests to really stress your GPU? Your GPU is clearly overheating if you get polygons after a while. Demading games like BF3 is a good example

If you pass the stress test still put your core clock and memory clock down and work your way up until you hit polygons again.

Its all about the tweaking man

 

[Rroff]

Thats normally symptoms of an unstable core but its not 100% that its the core. I've had the same problem with unstable VRAM and northbridge before.

 

[zoomee]

Defo core mate. I get them on 3dmark 11 as soon as I push GPU core up past 1150 without enough volts. (Even with loads of volts I still get instability)

In the end I just got ****ed off with it and stuck with my 1125/1575 (stock CCC overclock) @ stock volts and enjoyed BF3 instead Don't need to OC these babies tbh lol