On: AMD’s Mobile Revival: Redefining the Notebook Busi...

[foota]

This is not intrinsically true. Cooling and power delivery certain have it beat, but it seems feasible to beat based on memory bandwidth. I bet a GPU uses roughly the same order of power/cooling that say half a threadripper does?

[slashdev → foota]

No, how do you beat the wide bus memory bandwidth of a discrete GPU with the standard dram bandwidth? Even if your processor was not competing with the GPU for bandwidth you'd still have a small fraction of the memory bandwidth available.

[p1necone → slashdev]

You'd have to come up with a new architecture to make this work, but perhaps you could have CPU/GPU on the same chip with dedicated GDDR memory lanes.

PS4/XBOne have an APU with powerful (ish) graphics - how does their memory work?

[slashdev → p1necone]

They work with graphics memory rather than regular memory if my memory serves. Hehe.

[foota → slashdev]

Aw, I was thinking bw between the CPU and GPU directly, my bad.