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35 AMD CPUs Tested for Power Consumption

Testing 35 AMD Processors

Altogether, we measured the energy consumption of 35 different AMD processors. Among them are two Phenom models, 16 classic Athlon 64 X2 versions with different steppings, six "Energy Efficient" CPUs, six Sempron 64 processors, the older Athlon 64 FX-62, the famous BE-2350, as well as the three new "e"-Models of the 4X50 series.

The following chart shows core voltages of the different processor models that were measured on the MSI K9A2 Platinum motherboard.

ProcessorClock RateTensionSteppingProcess Core
Phenom 9600 Black Edition2.30 GHz1.250 VB265 nmAgena
Phenom 95002.20 GHz1.250 VB265 nmAgena
Athlon 64 X2 6400+3.20 GHz1.248 VF390 nmWindsor
Athlon 64 X2 6000+3.00 GHz1.408 VF390 nmWindsor
Athlon 64 X2 5600+2.80 GHz1.408 VF390 nmWindsor
Athlon 64 X2 5200+2.60 GHz1.408 VF390 nmWindsor
Athlon 64 X2 5000+2.60 GHz1.408 VF290 nmWindsor-512
Athlon 64 X2 4600+2.40 GHz1.304 VF290 nmWindsor-512
Athlon 64 X2 4200+2.20 GHz1.304 VF290 nmWindsor-512
Athlon 64 X2 3800+2.00 GHz1.304 VF290 nmWindsor-512
Athlon 64 X2 5400+2.80 GHz1.304 VF390 nmWindsor-512
Athlon 64 X2 5000+2.60 GHz1.352 VF390 nmWindsor-512
Athlon 64 X2 4600+2.40 GHz1.352 VF390 nmWindsor-512
Athlon 64 X2 3800+2.00 GHz1.352 VF390 nmWindsor-512
Athlon 64 FX-622.80 GHz1.352 VF290 nmWindsor
Athlon 64 X2 5200+2.60 GHz1.408 VF290 nmWindsor
Athlon 64 X2 4800+2.40 GHz1.408 VF290 nmWindsor
Athlon 64 X2 4400+2.20 GHz1.408 VF290 nmWindsor
Athlon 64 X2 4000+2.00 GHz1.408 VF290 nmWindsor
Athlon 64 X2 5000+ EE2.60 GHz1.408 VG165 nmBrisbane
Athlon 64 X2 4800+ EE2.50 GHz1.352 VG165 nmBrisbane
Athlon 64 X2 4400+ EE2.30 GHz1.352 VG165 nmBrisbane
Athlon 64 X2 4800+ EE2.10 GHz1.352 VG165 nmBrisbane
Athlon 64 X2 3800+ EE2.00 GHz1.352 VF290 nmWindsor
Athlon 64 X2 3600+ EE1.90 GHz1.352 VG165 nmBrisbane
Athlon 64 X2 BE-23502.10 GHz1.152 VG165 nmBrisbane
Athlon 64 X2 BE-23001.90 GHz1.152 VG165 nmBrisbane
Athlon X2 4850e2.50 GHz1.256 VG265 nmBrisbane
Athlon X2 4450e2.30 GHz1.256 VG265 nmBrisbane
Athlon X2 4050e2.10 GHz1.256 VG265 nmBrisbane
Sempron 64 3600+2.00 GHz1.352 VF290 nmOrleans
Sempron 64 3400+1.80 GHz1.352 VF290 nmOrleans
Sempron 64 3000+1.60 GHz1.352 VF290 nmOrleans
Sempron 64 3500+2.00 GHz1.352 VF290 nmManila
Sempron 64 3200+1.80 GHz1.352 VF290 nmManila
Sempron 64 2800+1.60 GHz1.352 VF290 nmManila
  • Excellent article! It would be nice to see similar article for Intel processors because even if they are less power hungry, the Intel chipsets are not the "greenest". I am just considering a 24/7 home server and this information is very useful for me. Thank you!
    Reply
  • Good article! You have the wrong processor name listed for the 2.10 GHz G1 Brisbane as "Athlon 64 X2 4800+ EE". It should be 4000+. I was a bit confused when I read the performance charts and noticed two 4800+ listed until I realized the mistake.
    Reply
  • zenmaster
    I was glad to see you got some of the new 45w AMD Chips in there.
    Reply
  • xoham
    Intel is not the greenest if it is less power hungry? Do they not meet RoHS standard or something?
    Reply
  • zenmaster
    He said the "Intel Chipsets" are not the greenest.
    The are still built on the 90nm process.

    The P45 will introduce the 65nm process on the chipsets.
    The latest AMD Chipsets use the 55nm process.

    In regards to CPUs, The Intel CPUs generally use less than the AMD CPUs.
    He was simply pointing out that the CPUs lose some of the benefeit of their low power consumption due to the chipset.

    For lower-end chips sitting idle, the difference in power usage of the chipsets can be significant. If you are looking at a higher-end chip under load, the power usage of the chipset becomes nominal.
    Reply
  • einheriar
    besides that intel still has the memory controller as a separate chip on the motherboard, where as amd has that included on the chip.. therefor a higher chip power use might be offset by the absence of the external memory controller, which would become visible when idling ..
    Reply
  • so my x2 4000 ee (in tables interpreted as one of 4800's - due mistake) isn't so bad after all, I don't care about 2w/hour, when I have 24" lcd :-)
    Reply
  • Mathos
    The extra power consumption on the Phenom is due to the fact that the NB/IMC voltage stays at 1.250v even when the rest of the processor is running in standby. Kinda of annoying that they put it that high, since with a bios that still has the p-states section you can easily under volt the IMC without losing stability, especially at stock speeds. That will cut down on the idle and load power usages drastically.
    Reply
  • royalcrown
    I like how review site all push efficiency now since AMD can't really compete on performance. Yawn.
    Reply
  • jprevost
    Bravo for a great technical article. I can't tell you guys how nice it is to see some great charts. Charts are good, and you guys are good at charts, just don't stop adding to them!
    Reply