Psyclon13

For the sake of honesty I should say that it was me who was at fault, not the PSU. I clearly saw the 10-pin connector dangling from the 18-pin connector. I clearly saw the 10-pin slot above the 18-pin slot at the back of the PSU. It just never crossed my mind that they need to be joined in holy matrimony, as was explained to me by the kind technician at the store. I feel like an idiot. Hope you have a few laughs at the expense of my shame

Well, I tried it and nothing happened. I'll be returning the unit tomorrow. I guess anything is possible in the tech world, even a faulty piece of "the best 850W PSU out there".
 
Thank you both for the help!

Strange, now it works for me, too. 
Thank you for the other link, it's exactly what I was looking for. Although, now I'm scared to try - a friend of mine almost yelled at me for even thinking about doing it. What could actually go wrong with this paper clip test, provided that I'm smart enough not to touch it while live? 

Hello!
 
I suspect that my brand new PSU (CM V850) is faulty. I'm trying to post outside the case with it, nothing happens. Then I tried with my old PSU (Corsair CX500), the LED on the MB lit up and the fans started turning. I tried once again with the CM, rechecked all connections, but still nothing happens. How can I verify that it is faulty?
 
 
I don't see a green wire on the 24-pin header, and the link showing how it should look like is not working. 

That sounds like a good idea. My birthday is in March, i'll put off buying anything else until then and if I still feel enthusiastic, I'll treat myself to some goodies

That sounds like a good idea. My birthday is in March, i'll put off buying anything else until then and if I still feel enthusiastic, I'll treat myself to some goodies

With only 29/44C on 40% FAN's, U would need A LOT of airflow to get it moving down.
Why ?
Because with aircooling, it's all about the temperature difference between the heatsink and the air moving around it.

Try doing OCCT PSU test (or any other test that can max out heat output from GPU + CPU combo), and then compare case fan settings.

I'm guessing that U wanted to see something like this : LINK, but with idle temps.
FYI : It can't happend because of physics.
But U can try comparing 29/44C temps, to situation when U cool the air that goes into the computer with ACU.
It sould produced the result U wanted (also : no FAN settings change required ).

Ah, so that's what the thing in the bottom right corner is... Thanks, Naeaes!