Though I am not saying I agree on those numbers that could be a possible outcome, however you should write it like that:
2011:
Bulldozer 4 module (8 core) vs. Sandy Bridge 4 core (8 threads): 1.15x in favor of Bulldozer
Bulldozer 4 module (8 core) vs. Sandy Bridge 6 core (12 threads): 1.15x in favor of Sandy Bridge
Bulldozer 6 module (12 core) vs. Sandy Bridge 6 core (12 threads): 1.15x in favor of Bulldozer
Bulldozer 8 module (16 core) vs. Sandy Bridge 8 core (16 threads): 1.15x in favor of Bulldozer
2012 (die shrink of Intel):
Bulldozer 8 module (16 core) vs. Sandy Bridge 12 core (24 threads): 1.15x in favor of Sandy Bridge
where die size of 4 module Bulldozer is roughly equal to 4 core Sandy Bridge (note: both are on 32 nm), though it actual depends on the exact amount of L3 cache of the part. With a die shrink in 2012 Intel could reduce the gap / improve die sizes and therefore increase core count.
So in 2011/2012 you will have really well performing chips at a low price range. The crown will go to Bulldozer FX which will be likly priced very high, since Intel will compete with lower prices (the lower Sandy Bridge prices by now already indicate that), more production capacity and selling power.
Intel will likly answer by adding more cores, so you can be sure to see at least a 8 core / 16 thread Sandy Bridge and with die shrink in 2012 a 12 core part doesn't seem unlikly.
All said for overall performance, since there will be lot of performance differences, e.g. chess programs which even drop with hyper threading or on the other side other programs which scale not very good because of bad programming. Therefore the above regarding all benchmark results taken together to an overall performance.
Still open and interesting will be average power dissipation. This could be another large gain for AMD if you take less modules (and therefore a bit less performance) but you gain a huge power saving. I mean Bulldozer can give 4 core stars performance at the power dissipation of a dual core.
With AMD Bulldozer you can choose between (nearly) double performance (over Phenom) or less than half the power (over Phenom) as of today.
AMD will have a window of ~1.5 years until Intel incorporates the "module technology" in their chips.
#13HW2050Plus,
Jan 13, 2011
Last edited: Jan 13, 2011