Nehalem-EP......BLOOMFIELD

[JumpingJack]

wow. This seems to be contrary to what the Anand Results seemed to point towards in singlethreaded performance... any speculation as to the disparity?

I think what you will find is different apps seeing some healthy gains, others seeing none or little to nothing. On the whole I suspect healthy overall but not overwhelming single threaded jumps in performance (similar to K8 to Phenom). There are examples where, clock for clock (IPC), Phenom showed moderate to very slight gains, and in other apps nice 15-20% improvements.

In this case, SP1M -- there is info on the web that Intel buffed up loop prediction, as SP1M is inherently recursive I would postulate that the benefit we see here is coming some from that architectural improvement. Speculation on my part though....

Just looking at the SP1M, roughly 13% gain clock for clock -- which is healthy for single threaded performance ... not quite a jaw dropping as the Conroe leap over Netburst, but still healthy.

Jack