What kind of pinnacle card


What kind of pinnacle card are you using? If you are doing DV all you should need for capture is a fire wire card. As far as computers go nowadays any off the shelf computer can be used for editing. A dedicated drive for video is definitly advisable. Also I would avoid using an old drive for any critical work as things with moving parts (especially those with tollerances in the microns) tend to fail after awhile. As for what drives to use for DV the data rate is a constant 3.6 MB a second so any 7200 rpm drive will allow for many streams of real time video. SATA drives are definitly better in many regards not just faster but use what ever your computer has (which is most likely SATA) it is not worth it to spend any money on an external sata card because in all likely hood you will gain no speed unless you are using multiple layers of uncompressed video. Also hard drives available today do not utilize the full bandwith of the SATA 2 interface much less the SATA 3 unless you use a RAID you will not get close to the theoretical maximum of the bus. As far as the power suply goes quality is the most important thing. A cheap power supply can fail and send sparks shooting out of the back of the computer.
All this being said the specs you listed sound great. I recently got a system with a core duo (a mac) and i have to say that running premiere and other prcessor intensive apps have noticed a considerable gain over my old single core amd system that it replaced.

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