New computer - Suggestions / Doubt

[GT4tube]

I have i7 4790k with Corsair H75 Cooler.
(Idle 20-28 degress)
(In summer +3 degress)
-Prime95 tested 7min: (100% using cpu) and TDP 148w.
Stock 4.0ghz: 42*C - 50*C Degrees.

-Prime95 tested 30sec: TDP 220w. GG
OC 4.6ghz: 70*C-78*C degress lol. (Extra +0.6ghz just 5sec instant to high temp :/ dont know why.)
I did tested on 3DMark "Fire Strike" with OC was stable! But what wrong my cpu temp? :/

i hate OC xD. I like stock is enough.

My results link: (Fire Strike)
Stock [4.0ghz, gpu 1253mhz,7010mhz, 100%): http://www.3dmark.com/fs/7362425
OC [4.6ghz, gpu 1373mhz, 7180mhz, 105%): http://www.3dmark.com/fs/7362701

HDD pls.

Spoiler (Click to View)

no HDD to trash.

get SSHD 2.5 fast than HDD. SSHD can games and storage.

I have only SSD and two SSHD.