Why does my core clock on my GTX 1080Ti drop from 2000mhz to 1974mhz

NiBy

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Apr 20, 2017
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Why does this happen? my temps don't go above 75c. It is the Aorus 1080ti extreme edition and iv overclocked it which puts the core on 1750mhz instead of 1721 which is it's factory oc. The power and temp limit are at max, Does it have to stay below a certin temp or something?

im using unigine heaven to test.
 
Anything above the base clocks is its own form of self overclocking. It increases clock speeds based on power usage, temperatures and GPU usage. They should not go below the clock rate you have it set to, which it isn't, but the boost clocks will vary.
 
there are two main reasons for card to drop the clocks:
1. it exceeds temperature limit
2. it exceeds power limit.
the higher the temps, the more power consumes for the same clocks. so in theory, if you could keep the card at lower temp (lets say under 50C) it might be able to stay at 2000. practically those 26Mhz are giving nothing in terms of performance. more over, in different games you might see different clocks as the load on the card will be different. so just enjoy your card.
 

NiBy

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Apr 20, 2017
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so its nothing to get worked up over? i tested out Sniper ghost warrior 3 which is a pretty unoptimized game. while looking at an outpost my gpu wasnt being fully utilised no where near in fact but the clock was at 2000mhz. so because it wasn't being fully utilised it wasn't using alot of power there for it could stay at 2000mhz
 
utilization is not showing the whole picture. there are different blocks inside the GPU that responsible for different functions. some of them consume more than others. so even with similar load percentage, the actual load is different and GPU consumes different mount of power. Of course if it's the GPU is not fully utilized it consumes less power.
 
As long as performance are not affected in negative way there is nothing to be concerned about. Also unigine heaven is one of stress test program. Try running furmark and see how it will affect your max clock.
 
As I mentioned in my first post, there is a 3rd reason the clocks drop, and that is usage. If you play a low demanding game, or are already reaching your refresh rate with V-sync on, your clocks will drop, often to their base clocks, as it is not needed to be at max. In a benchmark, that won't likely happen, but it happens a lot in many games.

A few clock points lower, when it already is near max boost frequencies, is not something to be worried about. Most GPU's (probably all with this tech) will do the same. My GTX 1070 does.
 

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