I'm so glad I jumped this upgrade... The Q6600 owns the new Q9450 in my board...

My 24/7 setup runs very cool and with tinny volts with DDR@1200Mhz:
CPU 1.26v Bios 1.28-29v CPU-z
NB 1.36v
VTT 1.255v

And those volts are still workable especially NB and VTT could go lower with a little less Vcore (1.27v real is goal).

Pc is inside a closed case and Fans on Rads working with 7v that's why I get higher temps then normal...