I wonder, what CPU would you, fellow overclockers, recommend. I would be inclined to think, that a 22nm i7-4790K might be with 88W TDP a good idea... but since I did not need the HyperThreading (4 cores, 8 threads) and the IGP, then I wonder, if I can get lower TDP CPU with similar CPU power, capable or running at 4GHz w/o too much voltage?

 

Less voltage = lesser TDP = quietier operation.

 

Could someone suggest (or even offer?) a CPU, that I can cool at low RPM on CPU fan (say 750 to 1000 RPM), witch means that it will be quiet?

 

I mean to use either Noctua NH-C14S (this cool well the CPU VRMs!) or the Phanteks PH-TC14PE (with one fan between all the massive heatsinks) ... but in the later case I worry a bit about the CPU VRMs.

 

 

...but on the other hand, good news is, that the CPU could be a terrible overclocker with wall at 4.1GHz - all I care is the lowest TDP up to 4GHz. Maybe I can cool only 3.8GHz quietly, so... if the voltage is seriously low, then a 3.8GHz is enought

Looks like that i7-4770K or 4790K could have done this - with disabled HT it is just 4 cores and there is a possibility of reaching 3.8 - 4GHz with around 1V for sure, when there is 5GHz benches with these CPUs at 1.18V:

http://forum.hwbot.org/showthread.php?t=145724

http://forum.hwbot.org/showthread.php?t=148830