@ NJ5 and Squilliam
I really don't understand why you continue to ignore the actual devs, this is more than clear enough:
PSU: "It's incredible to see huge levels and see the deferred rendering and note that on all the SPU’s, even on the heaviest load were coming up to about 60%," Haynes said. "They weren't coming close to maxing out. .They had about 40% of space before they started tripping or saw slow down on some of the processes."
Why oh why ignore them.....