Average And Total Power During PCMark
We looked at the average power requirements during PCMark Vantage, to see the power consumption numbers at a given workload.
|Core i7 920 (2.66 GHz/ 213 W Peak Power)||Performance Increase||Average Power Increase|
*Core i7 Overspeed Protection led to throttling
While the average power consumption increases by a maximum of 24.7% at 3.8 GHz, going one step farther to 4.0 GHz results in a jump to 50%. Compared to the 36% increase in idle power paired with a performance increase of 23.3%, the 4.0 GHz setting does not make sense from a practical standpoint.
Finally, we also looked at the total power used to complete a PCMark Vantage run:
|Core i7 920 (2.66 GHz / 213 W Peak Power)||Performance Increase||Total Power Increase|
Keep in mind that the total power used does not increase that much, as the faster system typically terminates its computations more quickly, allowing the system to switch into a power efficient mode.