Presentation Hardware Requirements

I’m looking for recommendations for the minimum hardware requirements to run a Flash presentation from a PC that will be powering two 32" LCDs running at 1280x720 or 1366x768.

These are basically POS (Point Of Sale) displays that will be running dynamic flash movies that will also have flash video integrated into them. Most everything that is not video will be vector graphics.

I’m thinking the specs won’t have to be too outrageous but want to make sure I also don’t undershoot. Does flash rely more on the CPU or GPU these days?