Xvid Encoding:
We tested video encoding performance using VirtualDub-MPEG version 1.6.15 and a multi-threaded version of the Xvid codec, along with the LAME MT MP3 encoder for encoding audio. We did a two-pass encode of a 15-minute 276MB digital TV recording with a target file size of 100MB.
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Shuttle SS21T (AMD FX62, onboard SiS Mirage 1 video)
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Shuttle SS21T (AMD FX62, 7600 GT)
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AOpen XC Cube EU965 (Intel X6800, onboard GMA950 video)
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AOpen XC Cube EU965 (Intel X6800, 7600 GT)
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Shuttle SD37P2 (Intel X6800, 7900 GTX)
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Asus Crosshair (AMD FX62, 7900 GTX)
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1024.0
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990.0
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727.0
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701.0
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687.0
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955.0
Time in Seconds (lower is better)
The benefits of the Intel Core 2 processor are evident here, with a near five minutes longer encoding time taken on the SS21T rather than the SFF systems three times more expensive. However the comparative AMD FX-62 ATX system is only 30 to 60 seconds faster, with some of this attributed to the more advanced engineering and the rest to the better memory performance.
MP3 Encoding:
We used LAME MT for our audio encoding test - it's the multi-threaded version of the popular LAME MP3 encoder. We ran tests with both Intel's and Microsoft's compilers - naturally, the Intel compiler resulted in some performance increases on Intel's processors. We converted all 18 tracks from Moby's popular Play album to a 192kbps variable bit-rate MP3.
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Shuttle SS21T (AMD FX62, onboard SiS Mirage 1 video)
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Shuttle SS21T (AMD FX62, 7600 GT)
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AOpen XC Cube EU965 (Intel X6800, onboard GMA950 video)
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AOpen XC Cube EU965 (Intel X6800, 7600 GT)
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Shuttle SD37P2 (Intel X6800, 7900 GTX)
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Asus Crosshair (AMD FX62, 7900 GTX)
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175.0
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175.0
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185.0
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110.0
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110.0
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175.0
Time in Seconds (lower is better)
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Shuttle SS21T (AMD FX62, onboard SiS Mirage 1 video)
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Shuttle SS21T (AMD FX62, 7600GT)
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AOpen XC Cube EU965 (Intel X6800, onboard GMA950 video)
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AOpen XC Cube EU965 (Intel X6800, 7600GT)
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Shuttle SD37P2 (Intel X6800, 7900GTX)
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Asus Crosshair (AMD FX62, 7900 GTX)
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174.0
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174.0
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172.0
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100.0
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100.0
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174.0
Time in Seconds (lower is better)
There is no performance difference between integrated and discrete graphics in both encoding tests, unlike the Intel-based AOpen XC Cube. In addition, the SS21T performs exactly as fast as the more expensive AMD FX-62 ATX system too.
MP3 Decoding:
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Shuttle SS21T (AMD FX62, onboard SiS Mirage 1 video)
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Shuttle SS21T (AMD FX62, 7600 GT)
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AOpen XC Cube EU965 (Intel X6800, onboard GMA950 video)
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AOpen XC Cube EU965 (Intel X6800, 7600 GT)
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Shuttle SD37P2 (Intel X6800, 7900 GTX)
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Asus Crosshair (AMD FX62, 7900 GTX)
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45.0
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42.0
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36.0
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34.0
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33.0
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39.0
Time in Seconds (lower is better)
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Shuttle SS21T (AMD FX62, onboard SiS Mirage 1 video)
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Shuttle SS21T (AMD FX62, 7600 GT)
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AOpen XC Cube EU965 (Intel X6800, onboard GMA950 video)
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AOpen XC Cube EU965 (Intel X6800, 7600 GT)
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Shuttle SD37P2 (Intel X6800, 7900 GTX)
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Asus Crosshair (AMD FX62, 7900 GTX)
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40.0
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41.0
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45.0
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31.0
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31.0
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39.0
Time in Seconds (lower is better)
Decoding speed drops a few seconds to the Intel system, despite having very similar hard drive performance scores. The AMD FX-62 ATX system only performs a slight bit faster though.
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