wolf, I don't get what you are trying to say. Can you put in layman terms please?
X11 runs cold because the implementation sucks and a good part of the GPU is idle.
Hehe I've read in many forums x11 runs cooler cause it sucks at hashing. I'm surprised nobody has bothered to fix this until now...
Or perhaps it was such a large job to do properly it required some long term planning.
Do me a favour mate,
"basically the same - the extra wave in flight helps hide memory access times, causing it to be faster", can you explain why the extra wave in flight helps hide memory access times? Why is hiding memory access times a good thing for speed?
Because the GPU schedules other waves to execute while the memory access is going on. So you basically lose no hashing time. If you have less waves in flight, you can end up stalling on a memory access.