I tried overclocking my ATI 5970 GPU's with MSI Afterburner, huge disaster as it just wouldn't go stable unless i went really low in clocks, even with 1.3v. I then tried to download Ati Overvolt Tool, and got it to 910/1220 which is decent, but i know this card still got more overclocking potential.
i7-930 @ 4.2
2x ATI 5970
So my question is, how am i to push the clocks any further (Without risking my card -> Flashing BIOS)?
-I think i might need more volt for my GPU, MSI AB is useless for that though, and i'm capped with ATI Overvolt tool.
I don't know where you got that from, but your completely wrong. 910 is very possible, some people have even gotten it above 1ghz.
As far as I know, dual GPU cards are harder to overclock and I'm pretty sure that something around 900 MHZ is the limit for 5970s.Tom's did an overclocking session with the LIQUID cooled Powercolor HD 5870 and it reached 1076 MHz core I think.