"32 cores running at 1.8GHz indicates that its C-Ray time is a mere 25 seconds"

vs

4 cores Intel Core 2500K in astounding 61 seconds.



Now let's calculate per core efficiency:

Code:
1/(32*25) = 1/800 (32 cores bulldozer)

1/(61*4)  = 1/256 (4  cores SB)
1 / 800 vs 1 / 256 = SB is more than 3 times more efficient.

OK, Bulldozer runs at 2GHz, SB runs @ 3.2GHz, let's take it into account.

1 / 800 / 2 vs 1 / 256 / 3.2 -> SB is still 2(!) times more efficient.




I guess we'll have to see the desktop version of Bulldozer to draw any conclusions. I doubt any existing computational test today can scale to 32 cores without some major performance loss.