Page 10 - Power Consumption and Conclusion

These readings were taken from our power monitoring chip on our motherboard. Intel SpeedStep was disabled for both processors; and if these readings were right then the QX9650, like the E7200, would be actually ridiculously power efficient at idle. It used around three times as much power as the E7200, but really, what is 7.6W anyway? I thought I read a decimal place off for both processors, but apparently I didn't. I took a look at our affiliate reviews and it seems that the overall power consumption difference between Intel 45nm and Intel 65nm CPUs is around 15-20W, and if the CPU did make that much of a difference in terms of overall power consumption, then this could be true.

Under load, all four cores kicked in and it was no surprise that the Intel Core 2 Extreme QX9650 had the highest power consumption overall -- again, in terms of ratio, it's almost the same as it is with the E7200 in idle. Sucking around 60W, it used 20W more than the E6600 and 40W more than the E7200, but dang, it's a quad core and it's pretty darn efficient in this regard.
Special thanks to Dan over at Intel for making this review possible.

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The Intel Core 2 Extreme QX9650 is everything you could ever dream about in your home PC.