AMD cuts to the core with 'Bulldozer' Opterons

[-Boris-]

Boris, I already gave an example of scaling of Phenom II in other thread:
Thuban in Cinebench R10, multicore result 14156, single core result is 3089. so 6 cores give 4.58 speedup. not 6x, and scaling is 4.58/6 = 76%

12 cores would be worse, and take in account that scaling is non-linear with cores increase. Generally, the more cores the worse scaling.
This is for just cinebench, in other applications numbers will be different. But I would not Expecting 100% scaling as JF AMD told us that 50% performance number is applicable to major set of server loads, not some picked applocation with 100% (if such possible at all with 12 to 16 threads)

Read my latest post, if bulldozer scales better and still only delivers 50% with 33% more cores. That means that it will have less performance increase in single threaded applications than 12.5% per core. In order to perform better, combined with better scaling, it would be more than 50% increase in multithreaded applications.

And I repeat 2nd thing - there is no word about frequencies for that 50% performance increase. So your number 12.5% IPC is double-wrong

If I mentioned 12.5% higher IPC it must be a mistake, I don't talk about IPC for bulldozer at all. 12.5% is a maximum increase in performance per core if Bulldozer scales better than MC.

We already have a munber for BD scaling: 80%. Sooooo????

That number is for the second core inside module, it can't represent the scaling going from one module to four or eight.