Quote:
Originally Posted by
Resendiz
that was just an example. I usually have 4gb free to use. Just trying to understand how gpus work.
If computer A has a
2.0ghz processor and Computer B has a 3.0 processor, and they both have the same GPU, will one outperform the other? Lets assume there is enough ram on both.
Let's assume they are the same chip and clocked differently. It isn't all about clock speed.
In some instances they will perform the same. If what you are doing relies mostly on the GPU, then the GPU will be the bottleneck. If what you are doing is based on the CPU then the higher clocked system will perform better.
There are a ton of differences between a CPU and a GPU. For example, GPUs are clusters of cores that have a controller, and multiple controllers for the entire chip. They are all streamed together. A modern CPU has only a few cores (typically between 2 and 6, however this number is changing). These cores do not require a multi-tiered controller to function.
CPUs take care of all the system and information processing that the computer requires to function. Anything graphic based is gone via GPU. If you don't have a dedicated GPU (graphics card) then you either have no video output or the CPU has an attached integrated GPU (iGPU). If you are using the iGPU, then some of you system RAM will be reserved specifically for the iGPU.
VRAM is not able to be used for the CPU. However, data that would be needed for the GPU and be cached on the system RAM for quicker access later.