CPU-GPU communication

[xFlankerx]

Just confirming that the GPU uses the FSB/HT-Bus to communicate with the CPU, and vice versa, correct?

 

[wee96]

Yes, via AGP or PCI-e which in turn uses FSB/HT to North Bridge to CPU if im remembering correctly.

 

[xFlankerx]

And since those Buses are plenty wide, the CPU gets restricted by the GPU because the GPU cannot execute all the instructions that it gets from the CPU quickly enough? Correct?

 

[BBA]

That is correct in the scenerio where the graphics are GPU limited, as in high resolutions with features on such as AA and AF.

 

[xFlankerx]

Thank you for your help, just wanted to confirm that.