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1. Re: GTX Titan - 12% improvement?
Harm Millaard Mar 18, 2013 5:27 AM (in response to Nicol Simard)Nicol,
Thanks for your submission. Rank #3 now. Great results.
Of course the Disk I/O test and the H.264 test are almost identical and the differences can be attributed to measurement errors. What is interesting however, is the MPEG2-DVD score that went down from 56 to 44 seconds, an improvement of around 20%. This test requires a lot of GPU assistance, since there is scaling, blending and blurring going on over the complete timeline. It is still early in the game, but when you see 20% improvement on such a test, even when using AME, it is possible that the real performance improvement over a GTX 680 may be better than 20%. I'm still hoping for 30 - 40%, but that requires a different test to show that. Anyway, 67% of the top scores on the MPEG2-DVD test are now Titan's.
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2. Re: GTX Titan - 12% improvement?
Nicol Simard Mar 18, 2013 8:53 AM (in response to Harm Millaard)Thanks. I am very happy with the results too. But I am curious why the MPEG2-DVD score would be improved but not the H.264. Do you have any explanation?
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3. Re: GTX Titan - 12% improvement?
Harm Millaard Mar 18, 2013 8:59 AM (in response to Nicol Simard)Because of the lack of scaling in the H.264 test. The GPU acceleration required in the H.264 test is marginal, it is all about number of cores, L3 cache and memory latencies.
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4. Re: GTX Titan - 12% improvement?
Bill Gehrke Mar 18, 2013 9:04 AM (in response to Nicol Simard)Mainly when you export from PPBM5 to MPEG2-DVD you are using a lot of scaling and pixel aspect ratio conversion which are MPE/GPU accelerated functions on the whole timeline.. When you export H.264 (1920 x 1080 in and out) you are not using these MPE accelerated features.
Harm beat me to it
Message was edited by: Bill Gehrke
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5. Re: GTX Titan - 12% improvement?
Nicol Simard Mar 18, 2013 12:44 PM (in response to Harm Millaard)Thanks!
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6. Re: GTX Titan - 12% improvement?
Nicol Simard Mar 18, 2013 12:45 PM (in response to Bill Gehrke)Thank you.



