Hey there, just spent all morning overclocking the gpu core of my 6970 and it has lowered my 3d mark vantage and 11 score. Why?
ocz 700w psu
bulldozer fx 8150 oc @ 4.2ghz
6970 oc @ 950 core and stock mem
3 hard drives all sata 2
2 dvd drives
thats about it really
all latest drivers
not running cool n quiet
not sure what other info you will need to help. So hope this is enough
More about :overclocking 6970 lowers benchmark scores
I tried at various increments and ran furmark for around 10 minutes at each time on highest settings with full AA to really test it. No artifacts whatsoever, no stuttering. Seemed all good.
Would raising the mem make more of an impact on benchmarking than the gpu core?
What exactly is powertune?
Yeah, I ran benchmark at every 15-20mhz increase. There was no real noticeable difference. Then when It got to 950 it decreased my benchmark result by around 1000 points.
I have been getting low scores compared to similar systems on pretty much every benchmark I have been running on 3dmark11 and vantage
It's due to instability in the overclock. The reason you're not seeing artifacts, is because of the error correction that is build into the card. That correction and chip instability sucks up performance, hence your reduced score in benchmarks.
I would reduce the overclock, going up slowly, only clocking the gpu or vram at a time. That way you know what is causing the bad overclock/performance issues.
I will give it a go, but, if I am overclocking using that and checking it at regular stages and I am seeing no performance increase then how will changing what program i use help me?
I dont understand, surely if it is overclocked it is overclocked
Some programs do a better job than others. Plus afterburner lets you voltage tweak if you so choose. In my experience, ccc is decent for mild overclocks, but to really push the card, afterburner will work better.