Ive been told that, them connectors only add 'stabilty' for Sli mode to the motherboard.
Havent properley tidied yet because i need to change the gpu cooler, aswell as my chipset
Temps are: 27 idle, 38 load (well on bf2) i run the fan @ 5v normally, and i guess around 7v when in gaming - dont notice that much of a decrease when on 12v (maybe 1c)