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Power Consumption - 21 Watts When Idle

AMD Phenom 9600 Black Edition: New Hope?
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We measured the power consumption of the Phenom 9600 Black Edition on our Gigabyte GA-MA790FX-DQ6 (rev. 1.0) with the current BIOS version F3. The measurements include the voltage regulation modules.

Unlike the engineering sample we used for testing during the Phenom's launch, our retail sample had no problem whatsoever taking advantage of Cool'n'Quiet 2 functionality.

In Windows Vista, the Phenom 9600 Black Edition reduced its clock speed from 2.30 GHz to 1.151 GHz when idle, simultaneously lowering its core voltage to 1.05 V. The Phenom is also able to reduce its clock speed using quarter-step multipliers, explaining the odd frequency of 1.151 GHz (200 MHz x 5.75). CPU-Z rounds the 5.75 multiplier off to 5.8.

Phenom uses a multiplier of x5.75.

Our power consumption measurements for the Phenom 9600 BE are nothing short of frightening. Using the new Cool'n'Quiet version 2, the CPU draws a full 27.58 watts. Whether or not the CPU is able to deactivate some of the voltage regulation modules does not really have much of an impact anymore. We assume that this is a problem caused by the CPU.

When Cool'n'Quiet is deactivated, idle power consumption rises to 61 watts. The jump in power consumption at 2.70 GHz is a direct result of the core voltage increase from 1.250 V to 1.400 V.

Gigabyte GA-MA790FX-DQ6

All measurements were taken on a Gigabyte GA-MA790FX-DQ6 motherboard using BIOS version F3 (21.12.2007).

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    ShadowKai , July 6, 2008 5:34 AM
    I think on page 14 the author meant:

    "When Cool'n'Quiet is deactivated, idle power consumption rises to 51 watts. The jump in power consumption at 2.70 GHz is a direct result of the core voltage increase from 1.250 V to 1.400 V."

    And the bars for Phenom 9600 BE and Phenom 9600 BE (CnC) should be switched around.
  • 0 Hide
    Anonymous , October 2, 2008 6:34 AM
    I think it's also important to mention the fact that Vista SP1 includes it's OWN TLB fix which overrides the bios setting of many boards. I used an app that works in conjunction with Crystal CPUID to change the MSR directly to deactivate this secondary TLB fix. It caused a dramatic improvement in performance; the quick and simple WinRAR bench went from 232 to ~1300 after the fix. Just think it's worth mentioning!
  • 0 Hide
    Anonymous , November 30, 2011 9:48 AM
    I think I may have found a new problem with this bug. I have a Phenom X4 9600, and have tried two different motherboards. The problem occurs when running Windows 7. BSOD with a message stating that the operating system did not receive an clock interupt signal from the second processor. At first I thought it was a bios problem, but have since had to replace the motherboard. Tried Windows 7 again after replacing the motherboard and still having the same problem.