AMD Cayman info (or rumor)

[generics_user]

after thinking about it again i really expect 6970 to beat gtx 580 (those 30% might be possible in selected tests)


why? going from 5870 to 6970 we have the following improvements:

320 -> 480 shader clusters (50% improvement)
higher clockspeed
doubled front end with higher efficiency
2-3 times higher tesselation performance
doubled ROP performance
extra TMUs (5870 wasn't tmu bottlenecked)
2gb vs 1gb ram
6 (possibly 7) gbps ram vs. 4.8 gbps, possibly a reworked RAM controller with more cache = 25-50% more mem BW

everything in this list points to a performance improvement higher than 30% which puts 6970 on the same level as gtx 580 and that's a low estimate
additionally an improvement under 30% (= less performance than GTX580) would put 6950 at the same performance level as 6870 which makes no sense at all...)

(please tell me if i made a mistake in this list)