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Andrew - I wish - if you want that approach - just go Zencoder and rent theirs actually!
Warren - SLI or Crossfire 2, 3 or 4 way works where the software allows GPGPU based processing. I don't believe MaximDL, DSS or the critical function of CS4 (at least) really use GPU capabilities well. Noel Calbronai (sp) astronomy actions grind my machines when I select the script Enhance DSO and diminish everything else - takes around 3 minutes to apply that action each time.
Marc - haven't played with SLI since late 90s and early millennium. CS5.5 I haven't researched but sounds interesting. Have you tried Noel Calbronai's Astronomy actions - particularily Enhance DSO? That would be a strong indicator of whether load was being shifted to the GPU/s. I would expect the first applications to offer real GPGPU acceleration will leverage Nvidia videocards first - simply because Nvidia has put more into CUDA to make it easy as a high level GPGPU programming environment than AMD/ATI has put into OpenCL / Direct Compute.
Phil - All good thoughts - the HDD for video edditing could always be SSDs or hybrid PCIx - SSDs if you really wanted to drop coin. I'll read up about EDIUS apps and add on - they sound really interesting too!
Meanwhile I'm urging the DSS guys to consider GPGPU enablement in a release future. Otherwise I guess its the CPU / number of cores that will most influence speed - all other factors considered!
Thanks all, Matt
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