All of our image quality comparisons are 200 - 400% zooms on the two highlighted areas of the following image:

What really matters are image quality and performance. Does CSAA provide equivalent or better image quality to MSAA methods? We take a look at Half-Life 2 to find out. First up, we compare CSAA and MSAA in modes where only 4 color/z values are stored.



4X 8X 16X

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4X 8X 16X

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We can clearly see that, using only 4 sample points, CSAA is able to achieve greater AA quality. Edges are smoother and thin lines appear less broken. But what happens when we look at an MSAA mode with more sample points than CSAA.



8X 8XQ

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8X 8XQ

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Here we can see that NVIDIA's 8x and 8xQ modes provide similar quality. The higher number of multisamples employed by 8xQ does seem to have a positive impact on thin line antialiasing, as seen with the antenna. Edges look about the same though.

New AA Modes CSAA Image Quality continued
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  • haris - Thursday, November 9, 2006 - link

    You must have missed the article they published the very next day http://www.theinquirer.net/default.aspx?article=35...">here. saying they goofed. Reply
  • Araemo - Thursday, November 9, 2006 - link

    Yes I did - thanks.

    I wish they would have updated the original post to note the mistake, as it is still easily accessible via google. ;) (And the 'we goofed' post is only shown when you drill down for more results)
    Reply
  • Araemo - Thursday, November 9, 2006 - link

    In all the AA comparison photos of the power lines, with the dome in the background - why does the dome look washed out in the G80 images? Is that a driver glitch? I'm only on page 12, so if you explain it after that.. well, I'll get it eventually.. ;) But is that just a driver glitch, or is it an IQ problem with the G80 implementation of AA? Reply
  • bobsmith1492 - Thursday, November 9, 2006 - link

    Gamma-correcting AA sucks. Reply
  • Araemo - Thursday, November 9, 2006 - link

    That glitch still exists whether or not gamma-correcting AA is enabled or disabled, so that isn't it. Reply
  • iwodo - Thursday, November 9, 2006 - link

    I want to know if these power hungry monster have any power saving features?
    I mean what happen if i am using Windows only most of the time? Afterall CPU have much better power management when they are idle or doing little work. Will i have to pay extra electricity bill simply becoz i am a cascual gamer with a power - hungry/ ful GPU ?

    Another question pop up my mind was with CUDA would it now be possible for thrid party to program a H.264 Decoder running on GPU? Sounds good to me:D
    Reply
  • DerekWilson - Thursday, November 9, 2006 - link

    oh man ... I can't believe I didn't think about that ... video decoder would be very cool. Reply
  • Pirks - Friday, November 10, 2006 - link

    decoder is not interesting, but the mpeg4 asp/avc ENCODER on the G80 GPU... man I can't imagine AVC or ASP encoding IN REAL TIME... wow, just wooowww
    I'm holding my breath here
    Reply
  • Igi - Thursday, November 9, 2006 - link

    Great article. The only thing I would like to see in a follow up article is performance comparison in CAD/CAM applications (Solidworks, ProEngineer,...).

    BTW, how noisy are new cards in comparison to 7900GTX and others (in idle and under load)?
    Reply
  • JarredWalton - Thursday, November 9, 2006 - link

    I thought it was stated somewhere that they are as loud (or quiet if you prefer) as the 7900 GTX. So really not bad at all, considering the performance offered. Reply

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