Does FX run cooler than Phenom II when overclocked?

[Fire-Flare]

I need to coax more speed from my CPU, which has a locked multiplier. I don't know whether I should stick with the Phenom II line for the job or if an FX CPU will run cooler when overclocked enough to give the performance I seek.

The main problem is that no reviews I've found modify clock rates to give approximately equalized performance in synthetic tests, then ranks the contenders by thermal efficiency.


Have any of you seen a review like this or perhaps upgraded their Phenom II to an FX and can comment on the result?


P.S. I don't need answers like "Phenom II is faster." What I want to know is which line will likely run cooler when sufficiently overclocked to run an intensive single-threaded program.