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  #1 (permalink)  
Old 13th July, 2004, 10:06 PM
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Temporal AA benches

I benched the new 4.7 drivers against the older 4.6 drivers. The main difference between them is that the 4.7 comes with a new temporal AA feature.

Sounds interesting.

The results.

Shock!... What happend?

Well, I would feel alot better if I could say that the bench with TAA on looked alot nicer than the rest.. Well I can't. Here are some screens.

Just look at the globe + desk in the second screen. My Conclusion = TAA makes things ugly and halfs performance.
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Temporal AA benches-taa-1.jpg   Temporal AA benches-taa2.jpg  
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Old 13th July, 2004, 10:16 PM
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That's a nasty rendering bug, rather than an issue with AA! I hope ATI fix this one fast, otherwise there won't be anybody trying temporial AA out.
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Old 14th July, 2004, 11:05 PM
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I hope they iron out the wrinkles.
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Old 15th July, 2004, 12:00 AM
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That is indeed a known bug with the drivers and was even documented on there release, as for performance hmm in prev drivers i've used the tweaker switch on it and performance impact has been minimal
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Old 16th July, 2004, 11:10 AM
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After benching a couple more times I think I can explain the perfroamce issues.

When bench with TAA on, the frame rate NEVER exceeded 100fps. It was at 100fps all the time. However, the framerate didn't drop as low as when TAA was off.

Since 3dMark03 bases the score on total fps, it is obvoisly going to be higher if it is not on.
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Old 16th July, 2004, 11:18 AM
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I believe vsync is involved with taa, even though i had vsync disabled when i was testing it in live for speed, it was jumping between 42.5fps and 85fps (85hz refresh rate) and occasionally 127.5fps
Which is kinda anoying as there is the flickering issue sub 60fps with taa, and i had it set to cut out at 60fps i think.

It does look quite good compared to similar aa, and no aa at all.

K
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Old 16th July, 2004, 11:23 AM
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Interesting, my refresh rate is 100MHz
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Old 16th July, 2004, 11:47 AM
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does indeed seem to still have a sticky vsync then :-( i havent tried 4.7 yet as the omega's arent out yet
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Old 16th July, 2004, 11:53 AM
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Quote:
Originally Posted by keithwalton
does indeed seem to still have a sticky vsync then :-( i havent tried 4.7 yet as the omega's arent out yet
Sounds like a plan.
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