When I overclock my Xeon E5649 by highering the base clock, and highering my voltage, I'm only able to overclock it to 3.4GHz with a voltage of 1.35V and the temperatures will be very high while stress testing.
When I try to overlock it with leaving the voltages on auto, I'm able to overclock it to 3.9GHz, and the voltage that CPU-Z and HWMonitor show are only 1.216V, the temperature will be much lower too.
How can this be? And is it safe to just leave everything on auto like this?
Thanks!
System:
Intel Xeon E5649
MSI X58 Pro-E
GTX 1060 6GB
8GB DDR3 RAM
Attachment is a screenshot of CPU-Z and HWMonitor while stress testing with Prime95