| curl-6 said: But eDRAM is where you (should) be storing data that requires very fast access. It's big enough that you can use it for a lot more than just stashing the framebuffer, and on Wii U both the CPU and GPU have direct access to eDRAM. For example, Shin'en have talked about how they used it for: "the actual framebuffers, intermediate framebuffer captures, as a fast scratch memory for some CPU intense work and for other GPU memory writes."
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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.
