If you have to use the P4 Prescott, go with high cfm fans because you are going to need to push lot of air; both intake and exhaust from the case. Remember to keep your system free of dust and debris on a regular basis.
If you truly want a power video editing machine, take a look at SGI's Tezro series. Throw in the Octane Video board (provides two independent input and two independent output channels of uncompressed SMPTE 259M, CCIR-601 serial digital video. The video can be PAL or NTSC timing and 8 or 10 bits per component. The two 4:2:2 inputs can be used together for a dual-link signal with video and key. Octane Digital Video provide broadcast-quality real-time video I/O for the Octane systems. It is the ideal solution for the post-production and broadcast professional who needs to get video in and out of the system at the highest quality in real time) and you'll be breezing through your vid projects.
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