fatslob-:O said:
I'm almost certain that a lot of the graphics workload doesn't depend on faster access otherwise you wouldn't see PC developers going apeshit about the memory latencies of GDDR5 but a few workloads that are encountered on the CPU do depend on memory latency. I'm not saying that the eDRAM is useless per se but it's mostly ideal for framebuffer and CPU performance situations so I still think that the main RAM is more important in both the WII U's and X1's case for rendering. |
Being able to use it for non-framebuffer GPU writes and intermediate framebuffer captures seems pretty useful. Shin'en also pointed out it's great for deferred rendering because at 720p you can comfortably store multiple framebuffers in eDRAM.