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Perf Cap Idle

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When i try to overclock my MSI GTX 960 2G with AfterBurner the core clock does not actually overclock it looks like. In GPU-Z it says GPU Core clock = 1189.3 MHz when it actually should be going to 1290 MHz and its not my perf cap is saying idle what does this mean? and why is it not overclouding ?
 
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Welcome to the forum!

Hmm, it's probably just because there's no load on it so it's dropped down to a lower performance state. Run a benchmark like uningine heaven or something and see if it's doing what you expect when it's actually doing something. :) Or if you have GPU-Z, there's a question mark to the right of the 'bus interface' box which when clicked will open a graphic to load the card up a bit, that should work to test the theory.
 
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Welcome to the forum!

Hmm, it's probably just because there's no load on it so it's dropped down to a lower performance state. Run a benchmark like uningine heaven or something and see if it's doing what you expect when it's actually doing something. :) Or if you have GPU-Z, there's a question mark to the right of the 'bus interface' box which when clicked will open a graphic to load the card up a bit, that should work to test the theory.
Okay i ran the benchmark and the perfcap when off of idle and the overclock was working pretty well, but the perfcap said VRel? Is this normal if not how do i fix this?
 
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Okay i ran the benchmark and the perfcap when off of idle and the overclock was working pretty well, but the perfcap said VRel? Is this normal if not how do i fix this?
That's normal, it just means it's at the voltage limit. The card will throttle itself for a few reasons, voltage, tdp, temperate etc, it's all a part of how nvidia's gpu boost works. :)
 

Kanan

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You can "fix" it, by increasing the voltage. ;) But it only goes so far and after that probably starts to need more voltage again. Don't do this if you don't want to take any risks.
 
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