Quote Originally Posted by SEA View Post
There is no such a number like 12.5%. This was a result of incorrect direct calculation... You forgot scaling and frequencies. So you don't know about single core IPC. Also desktop BD will have less cores, and it will result in different scaling numbers.
Also you speak of 16-core BD in line with Phenom. This is wrong again.
Interlagos is not suppose to be clocked high rather it has to have more cores and lower frequency to fit server market performance needs most.
Example: a top phenom is 3.4 GHz. Top server MC is 2.3 GHz. Compare Intel's top desktop and server chips yourself...
Server Bulldozer is to desktop bulldozer what server MC is to Phenom II.

And the reason to why I say 12% in singlecore boost is that server loads is very parallel. AMD gave us numbers in server loads. So, when utilizing every core a Bulldozer is 12.5% quicker than a MC per core. BUT, that is still very optimistic, since the thing with bulldozer is that it's meant to scale well. So if Bulldozer scales with amount of cores better than MC. It will have even less performance in singlethreaded applications.

So i'm hoping for the opposite to prove me wrong, that Bulldozer scales bad due to modules instead of cores, and due to shared FPU, It would be fantastic if these 50% total output was due to extreme singlethreaded performance that just happens to scale bad. That would mean over 50% performanceincrease in singlethreaded apps, but "only" 50% in multithreaded. However, a bit unlikely.


I want to make some things very clear here.
Everything is based on 50% performance increase over MC. I hope that number is extremely conservative. And that is for initial bulldozers and that they increase in clockspeed fast.

Personally, i believe Bulldozer will be much more capable than these numbers suggest. 4 ALUs, loads/stores per clock, shared FPU, 32nm, and totally new core probably capable of much higher performance/watt suggest that bulldozer will be very very good.


So I'm hoping I'm wrong here. Since I am already planning to throw my AM2+ system away and buy an AM3+ system next year.