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The GeForce GTX 480 Update: 3-Way SLI, 3D Vision, And Noise

CrossFire Performance And Scaling

It’d be a cop-out to not put AMD’s CrossFire technology under the same scrutiny, right? Here we see the increases moving from one to two Radeon HD 5870 cards. Metro 2033 is missing because these boards simply can’t handle the title with anti-aliasing turned on.

The raw data might not be very indicative, but the scaling numbers are much more telling. At the very worst, CrossFire increases performance by 23%. At the very best, it’s good for a 79% boost (ironically, in Call of Duty). That’s a much wider range of improvements, and Crysis actually sees performance drop to 41% of baseline at 2560x1600—an issue we’ve seen over and over at 2560x1600 with AA turned on.

  • anonymous x
    Why don't you overclock that cpu higher? Only 3.3 Ghz? The 3rd GTX 480 looks like it's being bottlenecked. You can see the scaling is excellent at high resolutions with AA (from 1 to 2 to 3 cards), but at lower resolutions without AA there's no gain.
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  • lashton
    and why not check it against the 5890, the 480GTX is nvidia fastest card, put it against ATI Fastest Card
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  • cangelini
    There's a good chance that more CPU would def. help at the lower resolutions--one of the reasons I chose 2560 for the comparisons at the end ;-) For one reason or another, wasn't having much luck getting the retail i7-930/Eclipse Plus combo to overclock very well.
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  • cangelini
    lashtonand why not check it against the 5890, the 480GTX is nvidia fastest card, put it against ATI Fastest Card
    A pair of 5870s is actually going to be faster. Should I swing a second 5970, though, I do think a pair of 5970s vs. the three GTX 480s would be a good comparison!
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  • cruiseoveride
    Crappy ATi drivers.
    Reply
  • lunyone
    Did I miss something, but there is NO mention of the power consumption of the 3 x 480's??
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  • I have no clue where you people are getting this "5890" Statement from... They have the 5870, and then the next step up is the 5970... Is that what you're trying to say?
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  • cangelini
    stuk1intI have no clue where you people are getting this "5890" Statement from... They have the 5870, and then the next step up is the 5970... Is that what you're trying to say?
    Bleh, it's late and it has been a long weekend. Edited :)
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  • SpadeM
    Quad fire with 5850 would have been nice (thinking back to a builder marathon with quad fire) to see if ati's quad cards made any improovement over last years ones. Also i agree with lunyone, I for one would have been interested to see the numbers on load for the 3 nvidia cards with the 800W gold power supply (and maybe a comment from you cris about what power supply u think is best for the job. Either go lower wattage but a high efficiency psu or higher wattage but lower efficiency)

    Anyways, it was a informative article, looking forward to a full 512 sp card from nvidia and the second revision to the fermi core.
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  • JeanLuc
    stuk1intI have no clue where you people are getting this "5890" Statement from... They have the 5870, and then the next step up is the 5970... Is that what you're trying to say?
    The only place where the "5890" exists is in ATI's folder under 'What to do if Fermi is good".

    And yes where is the tri-sli power consumption numbers, there's no mention of it's omittance in the analysis.
    Reply