ANswers to some of your question: 1) Only Premiere Pro is really accelerated by CUDA thanks to it's Mercury Engine. And yes, only the supported cards can enable Cuda acceleration. 5) Now that AE CS5 is 64bit you can use more than 3gb/core. You can use all the ram you want per core. 6) It really depends on your compositions (number of layers, effects applied, blending modes...). 11) Yes it's better if you have a dedicated scratch disk. My config is like this: 1 HDD for Windows, 1 HDD for swap/temp/scratch, 1 HDD for sources and 1 HDD for renders. Like that you avoid cross reading/writing on disks, and keep the pace. SSD is overkill IMHO. 12) The 280 GTX card will allow CUDA acceleration up to 3 tracks in Ppro, whereas the Quadros supports 10 tracks and more. For AE, it won't probably make any difference. Hope that helps (and I let the others reply the other questions)
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