Quote Originally Posted by Hornet331 View Post
Slides say single thread performance is higher the current P2, but that doesn't mean its IPC is higher.
The slides say "significant improvement in performance/watt/mm2". Not sure if it also means improvement in absolute performance per thread. There is no a single word about higher IPC.
Also bulldozer's fpu subsystem disappoints a bit. It looks like it able to start only one 256 bit instruction per cycle (SB can start two). This means that Bulldozer can reach SB on fpu throughput only if FMA is used but this is less flexible and not always possible. Also SB can independently start third non-arithmetic FP instruction (permute, fp-move e.t.c), not sure how it is implemented in bulldozer. And the final disappointment - Zambezi is going to have only 4x 256-bit fpus while Jaketown will have 8x 256-bit fpus.