Hi Guys,
Just bought the Asus deal and have been having a play with overclocking. Interesting I think, but makes sense.
However I am seeing some very odd behavior that I don't think should be happening. So I'll start from the top
Stock boost is 1058Mhz, which stock Kepler boosts to 1163Mhz (no settings changed).
I increased the power target to 117% (the max), +90 on the core clock. This gave my my apparent max Kepler boost at 1241 Mhz.
I noticed using Precision X monitoring that during 3D Mark (mainly Fire Strike) and Crysis 3 that the Power target was reaching over 120%, this was in turn lowering my core voltage which in turn was lowering my core boost clock, sometimes below 1200 Mhz. I believe this is called TDP throttling as the temps were never over 65°C
So I thought the clock speed is to high, so reverted to stock speeds again with 100% power target. Same as before, the power target was reaching 108~109% and lowering my boost clock from 1163 Mhz to just under 1100 Mhz.
Hmmm that can't be right I thought. So I underclocked the core by 100 Mhz and left the power target again at 100% (as that should be ample to sustain a boost clock). However I am wrong. It boosts up again - can't actually remember the clock speed achieved. However as before it is not stable, due to again the power target going up to 108% and dropping my core voltage (thus core clock).
Is this normal on the 6xx series? As from what I have read the Kepler boost clock should be constant and not fluctuate but my card seems to want to constantly draw to much power and throttle...?
Faulty card do you think?
Thanks in advance
Paul
Just bought the Asus deal and have been having a play with overclocking. Interesting I think, but makes sense.
However I am seeing some very odd behavior that I don't think should be happening. So I'll start from the top
Stock boost is 1058Mhz, which stock Kepler boosts to 1163Mhz (no settings changed).
I increased the power target to 117% (the max), +90 on the core clock. This gave my my apparent max Kepler boost at 1241 Mhz.
I noticed using Precision X monitoring that during 3D Mark (mainly Fire Strike) and Crysis 3 that the Power target was reaching over 120%, this was in turn lowering my core voltage which in turn was lowering my core boost clock, sometimes below 1200 Mhz. I believe this is called TDP throttling as the temps were never over 65°C
So I thought the clock speed is to high, so reverted to stock speeds again with 100% power target. Same as before, the power target was reaching 108~109% and lowering my boost clock from 1163 Mhz to just under 1100 Mhz.
Hmmm that can't be right I thought. So I underclocked the core by 100 Mhz and left the power target again at 100% (as that should be ample to sustain a boost clock). However I am wrong. It boosts up again - can't actually remember the clock speed achieved. However as before it is not stable, due to again the power target going up to 108% and dropping my core voltage (thus core clock).
Is this normal on the 6xx series? As from what I have read the Kepler boost clock should be constant and not fluctuate but my card seems to want to constantly draw to much power and throttle...?
Faulty card do you think?
Thanks in advance
Paul
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