Also my temps in idle are @ 29-31 C (CPU temp, not core temp, see link above for full temps) they have increased by a few degrees, but thats probably from dust buildup in my rad. They used to be 27 c an now they are 30 to 31 c.
No. Every cpu and motherboard has varying voltage readings, and the readings change with eist (speedstep) to reduce energy consumption. The lower the default voltage, the better. If you have deep pockets and want to change cpus, go ahead. But you will probably be wasting your money.
If my CPU is fine than I'll leave it like it is, but I'm about to get a GPU, what is better the hd 6870 in crossfire or gtx560 ti in sli. I know the gtx has a slight edge, but it uses more power. Would you say that I can fit 2 gtx 560 ti on a 750 watt corsair? Like 2 gainward phantoms (1 gb version). Some say you can some say you can't. So what would you say? Also is gainward a good company?