at 1280x1024 will cpu work harder
- Thread starter vrgadin
- Start date
Solution
A lower resolution does not effect your CPU usage, but it does effect your GPU usage.
What this would mean is that you are going to get MUCH higher framerates than at 1080p, because your GPU doesn't have to render the larger frames.
Between the CPU and GPU, one of the two is the bottleneck depending on your settings.
For each frame that is rendered by the GPU, the CPU needs to calculate things such as physics and AI. When you change your graphical settings the CPU load stays roughly the same per frame.
Most of the time, the bottleneck is the GPU, so the CPU may sit at 50% usage because the gpu can't keep up. If you lower your resolution, the GPU has less load on it and thus it can pump out more FPS. This means the CPU will need to do more calculations per second as there are more frames.
The CPU usage will rise up, and so will the Framerate with it.
You will NEVER lose FPS by lowering graphical settings, even if you lower them to the point where your CPU usage is at 100% and becomes the bottleneck you would still have significantly higher fps.
What this would mean is that you are going to get MUCH higher framerates than at 1080p, because your GPU doesn't have to render the larger frames.
Between the CPU and GPU, one of the two is the bottleneck depending on your settings.
For each frame that is rendered by the GPU, the CPU needs to calculate things such as physics and AI. When you change your graphical settings the CPU load stays roughly the same per frame.
Most of the time, the bottleneck is the GPU, so the CPU may sit at 50% usage because the gpu can't keep up. If you lower your resolution, the GPU has less load on it and thus it can pump out more FPS. This means the CPU will need to do more calculations per second as there are more frames.
The CPU usage will rise up, and so will the Framerate with it.
You will NEVER lose FPS by lowering graphical settings, even if you lower them to the point where your CPU usage is at 100% and becomes the bottleneck you would still have significantly higher fps.
- May 31, 2012
- 13,373
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Actually as you lower the resolution, the weakness of the CPU becomes obvious.
Which is why we get a lot of people with gtx 770's, 7970's, gtx 680's etc etc with crappy cpu's wondering why they are only getting such and such fps at low resolutions.
At higher resolutions the majority of burden is shifted to the GPU, helping to hide the crappy performance of their cpu's.
You cpu's performance is fixed, regardless of resolution, lower resolutions just make it obvious how powerful ( or not ) it is.
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