Power Consumption

Obviously power consumption should go down thanks to Intel's cooler 45nm process. At idle (sitting at the desktop with no disk queue), the difference between our Conroe and Wolfdale systems is relatively small - a savings of only 3%:

Total System Power Consumption at Idle 

Under load however (running our WME9 test) the total system power consumption gap increases to 12.6W:

Total System Power Consumption under Load  

Wolfdale decreases total system power consumption by around 10% compared to Conroe.

Wolfdale vs. Conroe Performance Overclocking


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  • Reynod - Saturday, September 01, 2007 - link

    Another great article Anand.

    Informative and helpful.

    I really hope your doing something similar with the new AMD cpu and will wait and see what you write.

    Like many people thinking of upgrading I await what AMD will offer after the 10th of Septenber ... but its clear Intel have a range of strong offerings at present.

    All we need now is to see what CPU design Nvidia are cooking up ... heh heh.

    We might end up with 3 competing complete platform (cpu, chipset, graphics) providers ... ??

    Maybe that's why Intel is trying so hard to crush AMD at the moment ... wars on two fronts are much more difficult than one !!
  • Lord Evermore - Sunday, August 26, 2007 - link


    Under load however (running our WME9 test) the total system power consumption gap increases to 12.6W

    189.1 - 170.3

    I don't see a 12.6W power difference in that chart. I see 18.8W. 12.6 isn't even the amount it changed from the idle draw.

    At least you got the percentage calculations correct for a decrease (difference/Conroe instead of difference/Penryn).
  • Lord Evermore - Sunday, August 26, 2007 - link

    For that matter, I just noticed the percentage was measured using the correct 18.8W measurement. Reply
  • AnnonymousCoward - Saturday, August 25, 2007 - link

    Great review! This is valuable information, to know how Intel's next-year CPUs will perform. Reply
  • Carfax - Saturday, August 25, 2007 - link

    Does anyone know what resolution the game benches were run at?

    These benchmarks vary considerably compared to the HKepc ones, which could be explained if Anandtech ran the benches at a higher resolution compared to HKepc.
  • AnnonymousCoward - Saturday, August 25, 2007 - link

    You're missing the whole point. The two sites aren't necessarily using the same graphics card, other hardware, exact test conditions, same driver, etc. If you want to see framerates, read a regular review on a game or graphics card. Anandtech's benchmark set the resolution very low so that it would be CPU-limited. Reply
  • ShowsOn - Friday, August 24, 2007 - link

    I'm wondering if the x264 video encoder could become a new benchmark?

    There is already a set of benchmark files http://forum.doom9.org/showthread.php?t=122318">herethat provide a consistent encoding task.

    Numerous people in the doom9 forums have already run the benchmark, http://img508.imageshack.us/img508/8092/couper12nx...">which has produced the following chart.

    It would be fascinating to see how much faster - clock for clock - the penryn cores are on this particular task.
  • coldpower27 - Thursday, August 23, 2007 - link

    I must have missed it by could you tell me what resolutions you used in the gaming tests? Reply
  • DLeRium - Wednesday, August 22, 2007 - link

    I'm sorry but anytime you introduce a new CPU we all expect IN DEPTH articles. No, we don't want a quickie that just touches a few things and a few benchmarks so you can shoot this out the door and say "Hey! I got the first article out!"

    Sure it may be a preview because the chips aren't officially out yet and these are merely engineering samples.

    The biggest complaint was OCing. If you're not going to even do a little minor OC with different voltages, then what the hell is the point of putting a tease up there.

    Anyways.. seriously. I expect more detailed articles than this if you're going to review some piece of hot technology...
  • DarthAgitated - Wednesday, August 22, 2007 - link

    My god man.. Did you pay for this article.. Did someone give you a choice to read this article or spend 15 minutes with a model and you chose the article?

    It's a preview. Of a cpu that's not coming for another couple of months. From a company that usually makes people sign NDA's up the ying yang so you can't report on anything.

    Damn them for managing to get a cpu in advance and telling us something about it. And in case you don't know, intel can tell when a cpu is overvolted. But I suppose they should have possibly fried it or hand it back to their mole and let him try and explain to Intel why their cpu was overvolted or fried. Maybe you can tell the people at anandtech how far they can overvolt a new 45nm cpu..

    Knowing what a cpu can be overclocked to on standard voltages is kind of a good thing to know. Knowing something about performance is probably a good thing to know. Any info is good info.

    Unless it's a press release. Then it's usually useless.

    Thanks for being a downer.


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