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AnandTech reviews Yonah dual-core CPU

updated 01:45 pm EST, Wed November 30, 2005

AnandTech reviews Yonah

AnandTech today published a , the most likely candidate for Apple's new line of Intel-based PowerBooks to be released next year. The chips run surprisingly cool, and are said to be equal to, if not slightly slower than an Athlon 64 X2 running at the same clock speed without an on-die memory controller. The Yonah and Athlon 64 X2 systems consume relatively similar power at idle, however Yonah uses only slightly more power under full load. A 2GHz Yonah under 100 percent load consumes less power than an Athlon 64 X2 3800-plus that is idling, according to the review. Intel has the advantage of using a much lower power 65nm process, and Yonah will be running at very similar frequencies to what Dothan is running at today, which means users won't be giving up single threaded performance in favor of multi-threaded performance. [updated link]




by MacNN Staff

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  1. Saint_Stryfe

    Joined: Dec 1969

    0

    oh-hoho...

    this is going to be sweet.

  1. itguy05

    Joined: Dec 1969

    0

    Like I said - Wrong Move

    Apple should have went AMD. Marginally more power consumption, but LOTS more speed and perofrmance with AMD.

    Intel still doesn't know how to design a good fast CPU.

  1. Toyin

    Joined: Dec 1969

    0

    Maybe...

    we'll see the G5 Powerbooks.

    (sorry, I've never said it before but it had to be done)

  1. fletcher

    Joined: Dec 1969

    0

    Power Consumption

    The article says that the dual core Yonah chip uses 92 - 109 watts of power and suggests it will be a good chip for notebooks. This is comparable to old PowerPC G5 chips used in dual processor PowerMacs which drew about 97 watts for both chips together.

    For comparison, the Pentium M class chips for notebooks reportedly use less than 27 watts of power. Current G4 chips used in PowerBooks use from 20-30 watts of power. The new PowerPC G5 970FX chip reportedly only uses 13 - 16 watts of power.

    I don't see how the Yonah described in this article could be a candidate for the new PowerBook. It seems like it would only be usable in a future iMac/PowerMac.

  1. RogerR

    Joined: Dec 1969

    0

    re: Power Consumption

    There are different flavors of Yonah with wildly different power consumption ratings. This particular link, http://www.theinquirer.net/?article=27770 , has a short piece that gives a sense of the different wattages to expect, and the wattages go as low as the low teens.

  1. neilw

    Joined: Dec 1969

    0

    Whole system consumption

    The article noted power consumption of the entire system, not just the processor. Of note on the Yonah system is the small jump in power consumption from idle to full load.

  1. testudo

    Joined: Dec 1969

    0

    Re: Like I said

    Yeah, and 6 months after Apple switched to AMD, AMD would announce delays in releasing their next chips, and there's some fab problems trying to get some other chips online, and Apple gets stuck at some 2GHz for a year and everyone's whining again.

  1. JeffHarris

    Joined: Dec 1969

    0

    Too Hot to Handle

    Who on Earth cooks up the embarrassingly idiotic names for processors at Intel?

    I always have the feeling they're a bunch of moronic Dungeons and Dragons playing dweebs who never left their parents' basement.

    Fletcher is right, the power consumption sounds ridiculous. It's a shame that IBM decided to give up on PPC development for the Mac!

  1. Fiyin

    Joined: Dec 1969

    0

    Re:

    Apple should have went AMD. Marginally more power consumption, but LOTS more speed and perofrmance with AMD.

    itguy05, it would probably help if you read the article before commenting. For the same clock frequency, Intel's mobile processor performed quite well against AMD's dual-core desktop processor and used less power running at full load than the Athlon did while idling.

    I don't know where this 'marginally' nonsense comes from. And like testudo correctly pointed out, AMD has a terrible manufacturing reputation in the industry. If you're Apple, why would you make your biggest transition riskier than it needs to be? Thankfully you aren't a decision maker at Apple; you would have royally screwed the pooch on this one. :)

    fletcher, you're mixing TDP numbers (thermal design power) and operating power numbers. The popular opinion is that Yonah's TDP will be 'reasonably' close to the current Pentium M's.

    JeffHarris, Intel codenames are based on geographic locations, and this processor was designed in Israel. FYI, bitching about a company's internal codename is embarrassingly idiotic and it was Apple who gave up on the PPC roadmap not the other way around. :)

  1. devmage

    Joined: Dec 1969

    0

    MB Manufacture

    I'm actually wondering if this wasn't an actual reivew of the very MB Apple will be using. They said in the article they were having trouble getting a MB and they finally had one but they couldn't tell you who made it. Now I've never known ASUS, ABit and the like to shy away from credit. In fact Apple is one of the few companies that prefers Surprise to Hype :)

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