Originally Posted by
DeltrusDisc
As other posters have said already, your temperatures are decent, you oughta try OCing with the HT on, since that's the whole purpose with the i7. 4.7 at 1.34v is not at all a bad OC, and the temperatures are alright, more are coming from the actual frequency of the card though rather than the voltage, but I'd say you could probably take that CPU to 5.0GHz. I would not start worrying until you are hitting 80+ Celsius, and if you go much into the 90s, then I'd be wondering if the heatsink is really properly installed, because it should keep that CPU pretty damned cool, even at load.
Also, what testing software are you using? I know personally the following are all great ones:
Prime95 (good for long testing)
IntelBurnTest (pushes higher temps)
OCCT (pushes higher temps, can do longer)
Folding@Home (good for long testing)