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post #11 of 15
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Quote:
Originally Posted by IXcrispyXI View Post
well first we need to determine what game he is playing first and what settings he is using
cause i could go turn metro2033 all the way up and get only 20-30fps and start complaining im gettin bad fps
All of the above games I play completely maxed.

Quote:
Originally Posted by munaim1 View Post
When you say less than 60 fps, what is it averaging at and in what games and what drivers are you using?
Most of the time they all run at 60fps but there are times during explosions, heavy battles, exc where the FPS drop to around 30-40. When this happens I am noticing that the GPU usage is not at 100%. It is usually at around 80 or so. I am using the latest nvidia beta drivers.
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post #12 of 15
Quote:
Originally Posted by killeraxemannic View Post
All of the above games I play completely maxed.



Most of the time they all run at 60fps but there are times during explosions, heavy battles, exc where the FPS drop to around 30-40. When this happens I am noticing that the GPU usage is not at 100%. It is usually at around 80 or so. I am using the latest nvidia beta drivers.
running at 1080p i presume? cause when i play games and there are explosions ect my fps does drop but only like 10-15
edit: try using playclaw it'll tell you ur cpu usage as well because it ur cpu is hitting 100% ur fps will suffer as well
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post #13 of 15
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Quote:
Originally Posted by IXcrispyXI View Post
running at 1080p i presume? cause when i play games and there are explosions ect my fps does drop but only like 10-15
Yep 1080p! And yes I am seeing the same thing. I am just trying to figure out why the FPS is dropping because the graphics card is not at 100% usage when it does.
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post #14 of 15
Quote:
Originally Posted by killeraxemannic View Post
Yep 1080p! And yes I am seeing the same thing. I am just trying to figure out why the FPS is dropping because the graphics card is not at 100% usage when it does.
check my edit above might help to determine whats goin on
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post #15 of 15
Since you're under 60fps, the fact that v-sync is on is most likely irrelevant to the equation. Presumably the same situation ... where fps is under 60fps in these parts, and you get < full gpu usage, exists regardless of v-sync being on, correct?

In this case, CPU bottleneck is a good 'starting point' for your suspicions. However, contrary to popular belief, it's not the only reason for lower-than-full GPU usage. At all. It can also easily just be a problem with the driver/game relationship, i.e. the coding of each of them aren't interacting optimally. You know how some games get better performance over time with newer drivers? This is why.

Another (and somewhat related) possibility is that in these particular scenes, you're experiencing a bottleneck WITHIN the card(s) ... remember, the 'gpu usage' is measured at a specific point in the 'pipeline' of the card's operation (and I wish I knew where that point was, but I personally don't) ... but the card has many subsystems that can act as bottlenecks ... texture/pixel fillrate, geometry calcs, ROP/rastering, memory bandwidth, and memory amount, to name some of them. 'Running out' of vram, for example, could certainly cause gpu usage to go down, because it becomes a bottleneck to the operation of the rest of the card.

So ... it's hard to say, unfortunately. I have what you are describing happen a lot myself as well, and I know it happens sometimes where it is NOT coming from a CPU-bottleneck. And it is friggin annoying.
Edited by brettjv - 4/7/11 at 11:29pm
    
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