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.
Xvid encoding performs on par with the rest of the boards, again, with SLI mode outpacing the non-SLI mode regardless of the "overhead" we are used to seeing.
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.
The Fatal1ty AN9 32X SLI only drops slightly in decoding tests, but encoding performs on par with the rest of the boards tested.
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