Power Consumption Results

As we’ve been alluding to throughout this article, power consumption is on the forefront of processor technology now, and into the future. So, starting with this article, we will be including Power Consumption results in future IT articles. It should be no surprise that Opteron dominated these tests, but it probably will be to those who concentrated on performance, and power was of no concern. The Bensley system used approximately 1.5x the amount of power in the idle load test over the Opteron system. Given that a Dempsey (130 W) processor uses approximately 1.4x the amount of power as an Opteron (95 W), the results are inline with the specifications for the two processors.

As the load on the system grew, the Bensley system used 1.7x and 1.8x more power (respective to the 50% and 100% load levels). It’s obvious that the Opteron system is more efficient at higher load levels than the Bensley, thus using less power. The Opteron’s on-die memory controller is one of the factors that would allow the Opteron to be more efficient at higher load levels.

Power Utilization (idle)

Power Utilization (40-60% utilization)

Power Utilization (100% utilization)

Database Benchmark Results How does power consumption affect the bottom line?


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  • OrphanBoy - Friday, December 16, 2005 - link

    Ok, I haven't got one of these new chips, but my work machine that I'm sitting at right now has 2x3.6GHz Noconas with a 7800 GTX and I often run it at full whack - the amount of power I must be drawing has to be huge!

    Nearly half a kilowatt per machine is a scary thought!
  • Cygni - Friday, December 16, 2005 - link

    Imagine a Pentium D EE on an Nvidia Intel SLI board with those quad-7800GT's from over at Toms. Maybe throw a few a nice RAID 5 array in too. Thats gotta pull down some SERIOUS wattage! Cant wait until the day that turning my gaming rig on for the first time trips my breaker, haha. Reply
  • Cygni - Friday, December 16, 2005 - link

    Of note, these arent 64bit results. I get the feeling that 64bit linux results would favor the Opty even more.

    The FB-DIMM controller and use of multiple FSB's (FINALLY!!!) really boosts the performance here to serious competition levels. This box would make a serious workstation powerhouse.

    But, as noted, Opty will likely have moved on quite a bit by the time this package is released. And it has better 64bit. And its platform is already available. But it is certainly interesting to see Intel really dominate a performance benchmark for the first time in a long time.
  • Peter - Friday, December 16, 2005 - link

    >use of multiple FSB's (FINALLY!!!)

    ... and only two years after AMD abandoned the dual-FSB approach and went HyperTransport.

    For those who forget quickly :) the Athlon-MP chipset (AMD762 north) was using dual independent FSB.
  • Viditor - Friday, December 16, 2005 - link


    Of note, these arent 64bit results

    A very good point...it doesn't make sense with the memory used to not use 64bit as well.

    Jason, could you let us know why you used 32 bit instead of 64 bit?
  • Jason Clark - Friday, December 16, 2005 - link

    We're going to look at 64bit in the new year. You have to realize most all of the general public running a windows 2003 server are running 32bit still. 64bit is not quite as adopted as you may think. That being said, we are going to look at 64 bit in the new year with sql 2005.

  • Viditor - Friday, December 16, 2005 - link


    we are going to look at 64 bit in the new year with sql 2005

    Fair enough, and thanks for the first peek!
    Enjoy your Holidays, then get out there and find us some MORE cool stuff to learn! ;)

  • Cygni - Friday, December 16, 2005 - link

    Its likely what Intel let them run at the time, as i doubt they shipped Anandtech a working system for their own use. :D

    Also, driver support is probably in its infancy. May not even have linux or x64 support today. Probably only Intel knows. But i think we can assume that 64bit will be similar to the current Xeons.
  • Griswold - Friday, December 16, 2005 - link

    Opteron 280 = available now
    "Bensley/Dempsey" = ???

    Btw, What about the Opteron 285SE at 2.6GHz that is exclusively used in the SUN Fire X4200? Should rectify the performance chart as well.
  • Heinz - Saturday, December 17, 2005 - link

    Yes that issue also catched my eye, actually it is a little bit a apples to oranges comparision. There are systems available now set up against systems available in Q2 or even H2 next year. Quote:

    Demspey is going to take us well into Q2 of next year, and Woodcrest will appear sometime in the second half of next year. Woodcrest will be a lower wattage part that is focused on performance per Watt.

    Well .. one should look at the AMD roadmap, what's in AMDs portfolio by then. Then you can declare a "winner" for the 2006 server market. Then the choice is really possible. Up to now there is not *any* choice. Everybody has to buy the AMD system, as the Intel is simply not available.

    I know that you cannot test Socket F now, thus you end up with the next best solution, which is an Opteron 280 system, but my point is, that you should have at least mentioned Socket F. These can/may (still speculation) deliver performance increases for AMD in 2006, too.

    Without that, the pure bottomline (performance) results of your article is, that a 2006 system is better than a 2005 one. Not really great news... even if it is about an Intel system being faster than AMD :)

    So for more objective articles, please try to cover all point of views of the industry. Without that, bad boys might question anandtechs independency, exspecially after you were invited to a nice(?) trip to the Intel headquarter ... no offense here, just trying to make a fair comment. After all it was a nice overview over the next-gen Intel platform with a lot of information.



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