TweakTown reports the new CoolerMaster V10 processor cooler only likes hot processors, because the TEC doesn't kick in on processors that don't generate enough heat:
It's been said the true potential of the V10 is not seen unless you're strapping it onto a quad core processor, or at least a higher-end chip that generates a lot of heat. The reason for this is due to the TEC not kicking in on cooler running processors and only a 2-5 degree difference would be seen between the V10 and other high-end coolers. But then, if you had such a chip, it's doubtful you'd be wanting to go so overkill on it with the likes of the V10 anyway.
I like this alternative analogy that was given:
It’s like a turbo car, you can drive a minivan and a STI all day at 50mph, but when you get to the highway or dragstrip the STI is faster because the “turbo” will turn on.
The TEC will not turn on unless the full heat potential is there. With a Phenom X4, or Core QX, or Core i7, you will have a more dramatic and proper effect since they are high heat. Higher the heat total... the more lead V10 will pull away from everything else and the hybrid mode will only work well with a cpu over Q6600 because the chip has to be very hot.