MSI R6950 Twin Frozr III PE/OC6950 2GB OC problems

I have had this unlocked MSI 6950 Twin Frozr III for while but haven't overclocked it much because whenever I do it crashes/freezes. It's running stock at 850/1300 but if I up the gpu clock even to 860 it will freeze in game. I have tried upping the voltage in MSI Afterburner but it still crashes after a slight OC.

Even after raising the core voltage to 1245-1250mV? You should be able to hit 1008/1008/5800 (1450MHz x 4) at that voltage, or at least close to those clocks.

I have had this unlocked MSI 6950 Twin Frozr III

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Do you mean you've flashed the BIOS to a 6970 Gpu or "unlocked" meaning you can overclock it?

redduc900 said:

Even after raising the core voltage to 1245-1250mV? You should be able to hit 1008/1008/5800 (1450MHz x 4) at that voltage, or at least close to those clocks.

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I haven't tried upping the voltage that high yet because I read the max safe voltage is 1200mV. I tried to run the gpu at 900 with 1200mV in AB and it ran BF3 for a few minutes then froze. Also is there way to tell if the voltage is actually being changed? I unlocked the options in AB but I am not sure if it's actually changing the voltage or not.

Mandrake4565 said:

Do you mean you've flashed the BIOS to a 6970 Gpu or "unlocked" meaning you can overclock it?

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It thought it was just unlocked but I could be wrong. It just shows up as 6900 series in GPU-Z with the extra shaders. I bought the card like this.

It's unlocked with just the extra shaders showing in GPU-Z. Everything else shows up stock.

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It's possible with the shaders unlocked it's not going to be stable at anything other then stocks clocks. The reason why it was chosen to be a 6950 is possibly because it wasn't up to spec with it at 6970 specs. Though raising the voltage could help stabilize it. Open Gpu-Z and click on the sensors tab. Put it under load by using a game or run the Heaven benchmark and you will see what the voltage is running at.

Okay so I just ran it at 1225mV in AB with Heavens benchmark and it stayed at 1200mV in GPU-Z.

Odd I don't think that card is voltage locked and GPU-Z is usually pretty accurate for me, so I don't think it's a software issue. Hopefully someone with more experience with that card will pop on, because I really don't have any answers, sorry.