Quote Originally Posted by dess View Post
No, I don't. I was saying in some cases it's unsharing, in other cases it's turbo that gives higher gains. It's not contradicion.


I wasn't speaking about doing both (using 4CU/4C mode and max. turbo) at the same time. Although, disabling every other hw thread lowers power consumption, thus making some room for lifting the clock, as well. Also, you can have max. turbo with 2 CU's and executing a dual-threaded program with 1 thread/CU.


Prove it.



Seems you've missed my edit: I think you're reading the chart wrongly. All games gained some (2-12% [and 40% in case of Houdini 2, although it's not of typical game load]) with 4CU/2C, compared to 2CU/4C.


There are three indications (the above results with the games, the diagram and the explanation for it) that it's rather A. Or perhaps both (with 2 CU's).
Wouldn't they scale more similarly with turbo alone?
chew is proving 'B' and im taking his answer as being accurate.
for the games i was looking at 4/4 being faster than 4/8, i completely ignored 2/4 because thats comparing a 4100 to an imaginary 4/4 chip. the perspective i was trying to show with point 'A' was the INCREASE in performance by chopping up an 8100's cores. (i have no idea what houdini 2 is, and based on details it looked like a multi-threaded program rather than a game)

i still belive the WoW example by TH was done by turbo alone. that game uses less than 3 full cores, but has 3 distinct threads, and the 2 weaker ones in total are weaker than the first one alone. so its possible they got it down to one CU and just let it max out at 4.2ghz. but if left untouched it might have used up 3 CUs and stuck between 3.6 and 3.9ghz. that game is actually rather important to me since thuban isnt that great at it, and it is very cpu limited, but also very limited to single threaded perf. i really wish TH did more talking about the results and not just the theories. showing us which threads were parked for the game, or what the clock speed was in their test. all we know is that Win8 helps, but it can be quite a few combinations to make it work out best. i wonder if Win8 will be smart enough to test whether using a single CU for the game and max out turbo will be better than using 2 CUs where it MIGHT still be able to near max out, but also give the heaviest thread its own resources.