|MSI Z77 MPOWER LGA1155 Motherboard|
|Reviews - Featured Reviews: Motherboards|
|Written by David Ramsey|
|Tuesday, 02 October 2012|
Page 9 of 11
Power Efficiency Tests
The first PC I built for myself, back sometime in the 80s, used a 250 watt power supply, and frankly at the time that was overkill. Today, though, overclocked multi-GPU enthusiast systems can easly exceed 700 or 800 watts under load, and can go even higher with extreme cooling and high voltages.
Perhaps this is why all CPU and GPU vendors are imbuing their products with power-saving features, and why motherboard vendors try to add even more. And the use of these features can make a significant difference in the power use of your system.
To test the power-saving features of the MSI Z77 MPOWER motherboard, I measured the power draw of the system (with no video card, and the monitor connected to the iGPU) with all the power-saving features in the "ECO" section of ClickBIOS II enabled, and with all the power-saving features disabled.
The results are interesting! Although there's no difference in power consumption under AIDA64 stress testing, note the substantial 40% savings when the system is idle. Overclocking doesn't add much to the power draw except under stress, where it balloons by 20%. There are several lessons to take from this, but the main one is that enabling the power saving features is a no-brainer, since you'll save quite a bit (unless your computer's running high CPU loads all the time), and there's no performance penalty.