New rumor about ATI Southern Islands

[hurleybird]

one unit is fine if it can handle it but it in some places it can't so more is better to split the work up with.
The only bottleneck I've seen is that one 5870 isn't accessing memory as fast a two 5770 can.

Twice the triangle setup rate and two tesselation units vs. one. HD 5870 has faster memory access as those 5770s most of the time are accessing the same information at the same time.... at the same speed. And, ummm, even if the 5770 did magically double usable bandwidth you're looking at two 128-bit controllers using slower memory.

So, yeah, guess I'll just ignore that thing you said earlier about tesselation in 6xxx