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How to fix bottle neck.

post #1 of 28
Thread Starter 
I heard on Linus Tech Tips that if your GPU is being bottle necked by your CPU and lagging, to turn up the graphics and put them on high. Is this correct? I always lowered the graphics thinking it would be less intense and taxing on the GPU/CPU. Can someone explain some more on this? Thank you.
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post #2 of 28
I'm not an expert but wouldn't it depend of the game code itself?
If it's straining GPU then it wouldn't matter to CPU much? Unless, of course if CPU was too slow to feed info to GPU.
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post #3 of 28
If your gpu is bottlenecked, then turning the graphics up will use more gpu resources increasing your gpu usage. Your cpu will still be sending the same information to the gpu so the usage will remain the same. That way, you get more usage and better graphics out of your gpu but this will not net you more fps. Since the cpu is already at 100% load, you'll just get better fidelity on each frame thanks to the gpu but the same fps. So in the end, it's not solving a bottleneck because you're not getting more fps, it's just getting the best out of the situation by getting slightly better graphics in the process. In the end, it's only to buy you time until you can properly solve the bottleneck by upgrading.
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post #4 of 28
Here is a link to some decent info on bottlenecking. People are throwing around "OMG your CPU is bottlenecking your GPU, you need Intel to be the best" left and right. Games these days are more dependent on the GPU. Most reviews/tests I've read/seen can confirm. Anyways, heres the link, hope it helps.

http://www.twcenter.net/forums/showthread.php?t=428946
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post #5 of 28
It really depends on the type of game. Most MMO and RTS games are very cpu intensive.
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post #6 of 28
Increasing video quality will not affect your fps if your cpu is bottleneck. If gpu is bottleneck then fps will decrease when you increase video quality. I see that you have an athlon x2 be. Why don't you overclock the **** out of it? If it fails, you were going to upgrade anyways tongue.gif
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post #7 of 28
Quote:
Originally Posted by akafreak View Post

Increasing video quality will not affect your fps if your cpu is bottleneck. If gpu is bottleneck then fps will decrease when you increase video quality. I see that you have an athlon x2 be. Why don't you overclock the **** out of it? If it fails, you were going to upgrade anyways tongue.gif

Exactly, with an old CPU you might as well have a little fun with it push it to limits and then some and then upgrade.
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post #8 of 28
Thread Starter 
Thanks for explaining guys. I cranked them both up. We'll se how I do.
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post #9 of 28
doh.gif

You can never improve a "bottleneck" (I'll rant on that term later) by increasing the demand on the hardware.

I hate the term bottleneck. You'll always have a limiting-component regardless of what you're doing. At low-resolution gaming (think like 800x600), the requirements are usually such that for each rendered frame, your graphics card can accomplish its task for that res. faster than your CPU can finish what it needs to do--so your CPU is the limiting component.

Switch that to the other end--game at 1920x1080, and generally it's your CPU that can accomplish what it needs to before your GPU--so the GPU becomes the limiting component.

But you cannot alleviate a bottleneck by increasing graphical demands, only (potentially) change which component is the limiting factor.

Also, keep in mind, that it's an archaic assumption that your CPU is "less important" at higher-resolution and higher-detail settings. That may have been the case 5-8 years ago given the graphical implementations, but it's no longer the case--CPU usage generally scales with resolution and various game engine post-processing methods. At best, you can only get the same FPS at higher resolutions as lower res. But more than likely you'll get much lower.
Edited by guyladouche - 4/13/12 at 3:55pm
    
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post #10 of 28
how? upgrade hardware. thumb.gif

What games or apps do you run?
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