For AMD build, 1.6V or 1.5V RAM?

[Jaslin]

Hey!

I was about making my purchase with PC components, when sales man told me that they recommend 1.6V RAM for AMD build. At that time, I was planning to take 1.5V (1866MHz CL8).
Do you know why?

The planned build looks somewhat like this
AMD FX-8350
Asus M5A99FX PRO R.2.0
Asus NVIDIA GeForce GTX780
G.Skill 4x 4GB RipjawsZ 1866MHz, CL8 1.5V
or TridentX 1866MHz CL8, 1.6V if it is better?

Case would be Fractal Design Define R4, and now I'm wondering what kind of processor cooler would be optimal. At first I was thinking about liquid option, like H60 or H80i, but is it really necessary? Can I go with Cooler Master's 212 EVO? Or, should I stay in good ones, and think about Phanteks PH-TC14PE or Noctua NH-D14? Do those big ones even fit in my case?

PSU would be Seasonic 1000W P-1000 modular 80 Plus Platinum, and HDD 1T and SSD 350GB.
Windows 7 64bit.

 

[Supahos]

More voltage on ram with same specs means worse ram, the 1.5v cl8 1866 mhz ram is some very good ram. Nocturna is the best cooler you listed, the evo212 is very solid and a good deal cheaper. That psu is hideously overpowered stop at say 750-850 if you want to leave room for sli later..