OC is not a worry, already changed the PSU to a enermax 535W and gpu 3850 for cooling i got my old trusty Thermalright XP-90C with a hell of a air flow Vantec Tornado
my temps are
* avg per core
idle 22°C
load 33°C
it might be loud but my bose headphones take care of that problem.
What is your room temperature, 40F? 22c idle is very low for a quad core. I wouldn't trust that reading. Read CompuTronix sticky in the CPU overclocking section for calibrating your temperature monitors.
Unless your room is near freezing, 22c idle on a quad core is near impossible. Not with air cooling.
I have the same computer and some people have been lucky just update your bios to the version R01-C1 if i'm not mistaken and you will be able to change the fsb but not the voltages and things like that!