I bought a non-modualr corsair tx650 psu from a buddy to use in a future rig. I tested it with the paperclip test; the fan only spinned up for 1 sek then stopped spinning. I also connected it to an old desktop pc and the psu powered the pc fine, but the fan didnt spinn. I have read that the tx650 v2 versions fan only spinns when you use 50% + of the power. But i dont know if my version is v2, since i didnt buy it and I dont have the original box. On a sticker on the psu it says "model=75-001315". Is this the v2 version or nah, cause if it isnt i have to buy a new one