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Bigger resolution, lower CPU

post #1 of 6
Thread Starter 
Sorry for the title.

Is it true that the lower the resolution of a game the bigger the game is dependant on CPU?
True or false?
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post #2 of 6
In percetanges, yes.

But the CPU usage remains the same on whatever resolution you run it on, it only means that higher resolution are more dependent on the GPU

IIRC

Please don't tell me that your 5850 won't run every game at 1680x1050 or 1920x1080, whichever your screen is....
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post #3 of 6
Thread Starter 
Nah, it isn't about this rig, but an older single core one with an hd3650. So it means, that if i increase the rez will i get a small boost on fps?
1024x1240(or something like that)
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post #4 of 6
Quote:
Originally Posted by farmdve View Post
Nah, it isn't about this rig, but an older single core one with an hd3650. So it means, that if i increase the rez will i get a small boost on fps?
1024x1240(or something like that)
I wouldn't think so, but it might... You should try it, no real reason not to, only takes like 2 minutes
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post #5 of 6
The CPU is about the same at different resolutions, the GPU is what is needed to put out higher resolutions. Its said that at low resolutions, FPS is a CPU benchmark because it doesn't take much to make the picture but to run the game it still takes CPU.

Don't plan on gaining FPS by increasing resolution, that's not how it works. Unless the game is buggy as hell.

example: Your playing a single player game at 1920x1080, the AI is kicking the poop out of you. Drop the resolution to 1280x1024, the AI didn't get stupider. The CPU runs the calculations for how the AI thinks and how things work on a mathematical stand point, the GPU shows what math your CPU is doing to you graphically. That's why in games like Super Smash Bros you will see 'bots' being called 'CPU' because how they act is based off their scripting that the CPU runs. So just because the game looks worst doesn't mean it still doesn't act the same, the guns still shoot and the enemies are still going to shoot you at 800x600., so same stress on CPU and less stress on GPU at lower resolutions.
Edited by Markisa - 10/22/10 at 12:54pm
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post #6 of 6
Quote:
Originally Posted by farmdve View Post
Nah, it isn't about this rig, but an older single core one with an hd3650. So it means, that if i increase the rez will i get a small boost on fps?
1024x1240(or something like that)

No you won't.

When someone says that a resolution is "CPU bound" or "GPU bound" what they mean is that either the CPU or the GPU is the limiting factor in frame rates.


General, CPU usage isn't affected by resolution. GPU usage is. As you raise resolution, a game becomes GPU bound because the gpu has to work harder. CPU total usage stays the same. You will never see better performance by raising resolution. It doesn't unload the CPU, simply makes the GPU work harder.
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