Panzerino: I chose the 120M for it's very quiet operation. The pump behaves pretty much like a case fan. The harder you use it, the louder it gets. Now I know a lot of people state that you must run the pump at full speed no matter what, but I have found this to not be true. On the GA-Z87MX-D3H, there are headers for the CPU fan and CPU Opt. fan (usually for the pump on a liquid cooler setup). The only problem is in the bios, there is only one setting that controls both headers together. I don't like that, so I hooked my pump to System fan 1 and the fan on the radiator to CPU fan. That way I can crank up the pump if I want to without affecting the radiator fan. I also found that just setting the pump and fan to "Normal" in the bios works just fine, but it's not for overclocking. Obviously if/when I overclock, I crank everything up to full speed. But actually, I rarely overclock my systems. I do it once in a while, and I will do it initially just to see how far I can push the Geekbench score, but I don't run it like that during normal conditions.
mareko2: Yes, I am on the F5 bios revision. I always build dual-boot machines because I'm a 20+ year Windows user. I tried two different methods for overclocking:
1. Bios: Under the MIT area of the bios, you can simply choose "CPU upgrade" for an i7-4770K 4.3Ghz. This, I believe, sets the clock rate at 4.3Ghz no matter what.
2. Gigabyte utility (EasyTune) in Windows: setting the overclock speed in this utility simply raises the ceiling on the the turbo mode of the CPU, so idling is still at 3.5Ghz. I like this option the best and is what I use for overclocking.
Geekbanch scores seemed to be the same no matter which method I used.