Radeon X1800 IQ and Performance Article

Discussion in 'Beyond3D Articles' started by Dave Baumann, Oct 23, 2005.

  1. Dave Baumann

    Dave Baumann Gamerscore Wh...
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    <a href="http://www.beyond3d.com/reviews/ati/r520/index2.php"><img border="1" src="http://www.beyond3d.com/siteimages/b3dsmall.gif" align="right" width="100" height="66"></a>While the initial part of our Radeon X1800 article took a look at the architectural overview of the R520 chip it still left many questions unanswered. Today we are taking a more detailed look at the two product offerings based on R520, the Radeon X1800 XT and XL, the image quality options they enabled, their performances and where their improvements are. By comparing the similarly configured X1800 XL against the previous generation X800 XT we can gauge exactly how the R520 chip has improved over its predecessor, beyond the new capabilities it offers, in order to see where its efficiencies lie.

    The R520: Radeon X1800 Performance article can be seen <a href="http://www.beyond3d.com/reviews/ati/r520/index2.php">here</a> or a single, complete article is available <a href="http://www.beyond3d.com/reviews/ati/r520/">here</a>.
     
  2. Dave Baumann

    Dave Baumann Gamerscore Wh...
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    Typos & Corrections Thread

    As before, to keep this thread on the track of the actual content of the article please point out any article typo's in this thread <a href="http://www.beyond3d.com/forum/showthread.php?p=586573#post586573">here</a>, or PM me.
     
  3. tEd

    tEd Casual Member
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    I liked the 6xAA 16xAF benchmarks often you only get to see 4xAA benches. What i would have liked to see are benchmarks with AI off mainly to see the impact of no texture filtering optimisations.
     
  4. Rys

    Rys PowerVR
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    Interesting to see the measured power consumption figures for X1800 XL vs X800 XT. Nice article, definitely one to re-read.
     
  5. Sxotty

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    I know this may not be precisely the place, but I have to laud ATI for their new filtering algorithm, or old if you prefer being angle independent in any case. It is great to see the user have the ability to decide what is best for them instead of an IHV.
     
  6. Geo

    Geo Mostly Harmless
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    A23? Has anyone actually had their hands on one of these mythical beasts to test with it? Obviously, by the naming convention, it is a more significant change.

    The FC vs SC HDR numbers are certainly a puzzlement.

    I'm glad we're on the same page about the forward-looking nature of the MC.

    As always, a pleasure to delve into.
     
    #6 Geo, Oct 24, 2005
    Last edited by a moderator: Oct 24, 2005
  7. Pete

    Pete Moderate Nuisance
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    Yep, we're seeing rather large spreads b/w the XT and XL. Dave shows about 25W separating the two in use, while the other sites show 40-50W+. Maybe it's down to different tests? For instance, B3D uses 3DM03 GT2, whereas HW.fr uses '05 GT2 (alongside P95) and Xbit, '05 GT3 w/AA+AF.
     
  8. Skinner

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    Far Cry HDR?!

    Are these numbers for the performance with HDR in Far Cry for the XI800XTcorrect?! In the 7800 gtx-review the 7800gtx allready scores 50 fps and the XI800XT only 35? (1600x1200 no AF en AF) maybe I overlooked somthing...or is the patch to "raw" and unoptimized yet?
     
    #8 Skinner, Oct 24, 2005
    Last edited by a moderator: Oct 24, 2005
  9. AlphaWolf

    AlphaWolf Specious Misanthrope
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    7800 gtx scored 45, not 50. Also it's not a comparison review so its not necessarily comparable results. Hopefully Dave can clarify. If the results are comparable it would seem that the X1800 is suffering a much more significant loss (65% vs 45%) for HDR.
     
  10. Dave Baumann

    Dave Baumann Gamerscore Wh...
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    The Far Cry patch is new, unreleased patch which alters the engine to allow ATI's HDR method, as such results to previous versions may not be comparable and we don't yet know that the path will be doing the same thing from vendor to vendor.
     
  11. Moloch

    Moloch God of Wicked Games
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    All hail B3D.
    Finally a real article!
    We can easily see with the X1800XL vs X800XT the effciency gains!
    And of course fsaa+hdr.
    It would seem there is no reason not to enable HQ AF.
    I think it should be the default setting.
     
  12. Geo

    Geo Mostly Harmless
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    I dunno, if the quality is comparable to the competition, even a few percent is not something that is easy to give away by default. If a user isn't picky enuf to be looking at the control panel settings, I'm not so sure he'll be picky enuf to notice the difference.

    Tho it would be a confident thing to do. I suppose they could set it by default and then tell reviewers if they want "apples to apples" to use the other.
     
  13. tEd

    tEd Casual Member
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    yeah i'm sure that would work :lol: like it already does :twisted:
     
  14. Moloch

    Moloch God of Wicked Games
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    I would do it simply to show how confident ati is, by using a setting where the quality is
    unattainable by the competition and still winning the benchmarks:wink:
     
  15. cho

    cho
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    the newest version HL2 can be ran/benchmarked without sound card if you add "-nosound" .
     
  16. THE JEW (RaVeN)

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    Best review of the cards on the net.........period.
     
  17. Tokelil

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    Thank you for the X1800 XL vs. X800 XT benchmarks. Those are the really interesting numbers IMhO. Would be nice with a tool to disable to 2 extra vertex ALUs and compare results again...
     
  18. Unknown Soldier

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    Hi Dave

    Is there a chance you could do a comparison of the X1800XT 512MB and X1800XT 256MB.

    It would be interesting to see them compared .. and I have yet to see any other site do a compaison test.

    Regards,
    US
     
  19. John Reynolds

    John Reynolds Ecce homo
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    Dave,

    Any chance of a comparison article now that this generation is public? I'd enjoy reading your analysis of why one part outperforms the other in various synthetic testing, and I think it might help readers get a better handle on architectural differences between these parts.
     
  20. Unknown Soldier

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    Also .. is it possible to downgrade the X1800XT to 850XTPE Speeds and do some tests. This should show how much more effecient the X1800 range is over the X800 range.

    Oh and while you doing this .. just do a comparison with the X1800XT 256MB as well :D

    Ta

    US
     
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