And it is not just twice as much as a Core 2 Quad processor with comparable performance will consume, but is way higher than the actual power consumption of the Core i7 with 8 virtual cores and not 4. In other words, Phenom II X4 965 has very frustrating power consumption.

Interestingly, the entire Uncore is uncoupled from the CPU’s main power supply coming in through the auxiliary 12V rail. Most of the power for the uncore, that is the power for the analog and digital portions of the memory controller, the QPI link and the shared L3 cache are directly derived from the QPI bus voltage, which was formerly the AGTL voltage and is specked at 1.20V typical. As the power consumption is heavily dependent on load, Intel’s data sheet only lists the max values for the analog and digital components each as 5A and 23A, respectively, for a combined ITT max of 28A. At 1.20V, this results in 33.6W power for the logic portion of the uncore.
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As a result, using conventional methods, that is, either measuring 12V supply current or else measuring at the MOSFETs directly will only generate data pertaining to the core section of Nehalem but will not take into account the uncore, which, at least according to Intel’s specifications can weigh in with as much as 44.58 Watts.