What.
Napkin math time! Lets say Bulldozer is actually Husky with 8mb of L3 slapped on it. Husky performs around 6% clock for clock than Deneb, so with the L3 I think 10% better ipc is a fair approximation. Bloomfield has around 20% more ipc than Deneb iirc, so if it turbos to 4.2Ghz at 4 cores used, that would make it around equal to a 3.7-3.8ghz Bloomfield. What games do you play that are cpu bottlenecked with a i7 920@3.7Ghz?
And here is the kicker, apps that actually need the cpu power will use all 8 cores. Nifty, huh?
No they don't. I play CSS with multi core usage on and I never see more than 50% usage. Same thing but with 8 cores instead of 4.
A game written to use 4 cores will not use 8 cores period.
I don't care about turbo, I don't use it. I overclock so that all cores are running the same speed all of the time.
That isn't the point. Nobody cares what an i7 920 does at any clock speed. We are talking about BD and Sandy Bridge. The main problems I have with CPU bottlenecks are games that are CPU limited. I build PC's in a balanced way which means that I spend a roughly equal amount on GPU power and CPU power unless spending more on either does nothing.
In this case.
i5 2500k + $50 CPU cooler
$260 GPU
Or
$200~ BD CPU +$50 CPU cooler
$260 GPU
Roughly the same amount of money on each major processing component. In this case I want 4 fast cores over 8 slow cores. I do not need 8 cores so I will throw that option out leaving me with 4 fast cores that will run single core games, dual core games, and quad core games faster than the 8 core CPU.
I do not need more than 4 cores at a high clock speed. Turbo still will not cut it. In the best case the turbo still cannot go faster than the Intel CPU at a constant clock speed.