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Power Consumption And Efficiency

Intel Xeon E5-2600: Doing Damage With Two Eight-Core CPUs
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e-on’s Vue 8 turned out to be the best candidate for measuring system load power because it’s a nice, long workload, and it fully taxes each of these configurations.

We already knew the finishing order from our performance tests. Now we can add to that power use over time, thanks to our Extech logger.

As the line graph suggested, Intel’s Xeon E5-2687Ws average the highest power consumption in this workload (then again, we might have guessed that would be the case, given two CPUs with 150 W TDPs).

Surprisingly, the Xeon W5580s are the second-worst offenders. Remember that Intel switched to 32 nm manufacturing for its Xeon 5600 series, so even though those processors sport an additional two cores each, they’re able to outperform 5500s in threaded apps while using less power.

Naturally, a single Core i7-3960X offers the absolute lowest average power numbers, albeit with the worst performance.

Multiply the average power by the fraction of an hour each configuration took to finish its rendering task and you end up with energy use in Watt-hours.

High power use and mediocre performance really hurt the old Xeon 5500s here. In comparison, the 5600s are much more attractive (though they use marginally more energy than a single Core i7-3960X, which is slow but draws a lot less from the wall).

The real winners are Intel’s Xeon E5s, though. Despite averaging the highest power consumption, stellar performance under a full load translates to the lowest energy use.

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Top Comments
  • 19 Hide
    willard , March 6, 2012 4:54 PM
    dalethepcmanNo gaming benchmarks? I know this is a high workstation / mid server build, but you know some of the boutiques will make a gaming rig out of any platform. Just out of curiosity, I would have liked to see 2x7970 or 2x580 and a few gaming benchmarks thrown in.

    I'd be really surprised to see these in gaming machines, even in the high end boutiques. That's a $2k processor they reviewed, and basically all it offers over the $1k SB-E chip (for gamers) is an extra pair of cores, which games can't make use of.
  • 18 Hide
    willard , March 6, 2012 5:24 PM
    esreverwhy aren't AMD cpus tested too? I wouldn't mind seeing how 2x interlagos stacks up.

    Anandtech benched those next to the new Xeons. Went about as well as Bulldozer vs. Sandy Bridge.

    http://www.anandtech.com/show/5553/the-xeon-e52600-dual-sandybridge-for-servers/6
  • 14 Hide
    cangelini , March 6, 2012 5:25 PM
    esreverwhy aren't AMD cpus tested too? I wouldn't mind seeing how 2x interlagos stacks up.

    Mentioned on the test page--I've invited them to send hardware and they haven't moved on it yet.
Other Comments
  • 8 Hide
    CaedenV , March 6, 2012 4:36 PM
    My brain cannot comprehend what CS5 would look like with this combined with a 1TB R4 drive, and the GTX680 version of the Quatro would look like... and I am sure my wallet cannot!

    Great article! I was not expecting my mind to be blown away today, and it was :) 
  • 19 Hide
    willard , March 6, 2012 4:54 PM
    dalethepcmanNo gaming benchmarks? I know this is a high workstation / mid server build, but you know some of the boutiques will make a gaming rig out of any platform. Just out of curiosity, I would have liked to see 2x7970 or 2x580 and a few gaming benchmarks thrown in.

    I'd be really surprised to see these in gaming machines, even in the high end boutiques. That's a $2k processor they reviewed, and basically all it offers over the $1k SB-E chip (for gamers) is an extra pair of cores, which games can't make use of.
  • 9 Hide
    nforce4max , March 6, 2012 5:07 PM
    I must say DROOL :o 

  • 14 Hide
    esrever , March 6, 2012 5:19 PM
    why aren't AMD cpus tested too? I wouldn't mind seeing how 2x interlagos stacks up.
  • 0 Hide
    reclusiveorc , March 6, 2012 5:19 PM
    I wonder how fast TempEncode would chew thru transcoding avi/wmv files to mp3/mp4
  • 18 Hide
    willard , March 6, 2012 5:24 PM
    esreverwhy aren't AMD cpus tested too? I wouldn't mind seeing how 2x interlagos stacks up.

    Anandtech benched those next to the new Xeons. Went about as well as Bulldozer vs. Sandy Bridge.

    http://www.anandtech.com/show/5553/the-xeon-e52600-dual-sandybridge-for-servers/6
  • 14 Hide
    cangelini , March 6, 2012 5:25 PM
    esreverwhy aren't AMD cpus tested too? I wouldn't mind seeing how 2x interlagos stacks up.

    Mentioned on the test page--I've invited them to send hardware and they haven't moved on it yet.
  • 10 Hide
    willard , March 6, 2012 5:32 PM
    cangeliniMentioned on the test page--I've invited them to send hardware and they haven't moved on it yet.

    I would guess that's because Interlagos is garbage compared to the new Xeons and they know it. I don't think they're terribly eager for the front page of Tom's Hardware to show the low end Xeon's beating the best Interlagos has to offer.
  • 9 Hide
    cangelini , March 6, 2012 5:47 PM
    willardI would guess that's because Interlagos is garbage compared to the new Xeons and they know it. I don't think they're terribly eager for the front page of Tom's Hardware to show the low end Xeon's beating the best Interlagos has to offer.

    Not really my place to speculate--only to point out that I similarly wanted to see AMD hardware included and explain why it isn't there :) 
  • 5 Hide
    willard , March 6, 2012 5:48 PM
    jtt283What, or who, was the target? Are there military applications for this weapon?Sorry, vote me down all you like, but the title was just silly.

    No, the title is a fairly common phrase in American English.

    "Now that I've got X, I can really do some damage" would probably be the way I hear it used most often.
  • 6 Hide
    willard , March 6, 2012 5:49 PM
    cangeliniNot really my place to speculate--only to point out that I similarly wanted to see AMD hardware included and explain why it isn't there

    Yeah, I understand that you're in a sensitive position. But being a lowly commenter, I'm free to speculate all I want!

    Muahahahaha!
  • 6 Hide
    cangelini , March 6, 2012 5:52 PM
    willardYeah, I understand that you're in a sensitive position. But being a lowly commenter, I'm free to speculate all I want!Muahahahaha!

    Precisely ;-)
  • 1 Hide
    wiyosaya , March 6, 2012 6:08 PM
    Interesting results.

    In my opinion, the SolidWorks test is also one of those not representative of typical SolidWorks tasks. PhotoView only renders realistic images of a SolidWorks model. Personally, I think the Specviewperf SolidWorks test would be significantly more representative of average SolidWorks use.

    Although I really hate to draw this comparison, PhotoView is more like using Power Point to organize a display of images created in Photoshop. In this comparison, most of the grunt work is done by Photoshop rather than Power Point, as is most of the grunt work done in SolidWorks then rendered in PhotoView. Performance differences revealed by the Specviewperf test are more informative, IMHO. See these.
  • 0 Hide
    juan83 , March 6, 2012 6:08 PM
    great review.. i wonder myself how long we 'll have to wait to see 8 cores and 16 threads on desktop segment as a default pc.. (or less than 400 dolars)

    we have to wait to long for that..
  • 0 Hide
    Anonymous , March 6, 2012 6:37 PM
    I would love one of those with a pair of FireGL cards and a mix of SCSI and SSD drives. I'm sure a dual core version of all of that will run me close to $8K though. Consider though how much Sun SPARC stations and SGI Workstations costed a decade or so ago? Workstations that were not nearly as capable went 20-25k. A dual core E5-2687 with FireGL cards and SSD drives is the fastest workstation you could put together on any platform and you can do it for far less than the 25k from years ago. Absolutely crazy to think about it in those terms.
  • 3 Hide
    EXT64 , March 6, 2012 6:52 PM
    I think you need to run some folding at home on that. I can't imagine what it would get in PPD, considering how well the old Intel 6 cores (Gulftown) do.
  • 1 Hide
    jaquith , March 6, 2012 7:11 PM
    Great article and thanks! 16-cores/32-threads is nice! :) 

    Reading this however, all I can do is think how PO'ed I am at Intel not enabling the 7th & 8th cores on the SB-E i7-3960X and i7-3930K.
  • 5 Hide
    cangelini , March 6, 2012 7:14 PM
    jaquithGreat article and thanks! 16-cores/32-threads is nice! Reading this however, all I can do is think how PO'ed I am at Intel not enabling the 7th & 8th cores on the SB-E i7-3960X and i7-3930K.

    I'm going to drop these into X79 and compare the numbers to see how power is affected. Maybe get a little overclocking out of them, just to check ;-)
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