1. How much RAM is needed to run the software?
With preloaded settings (12-hours of 1-second data charts, 12-hours of footprint charts, 5-days of 1-minute charts), the software will use about 100MB of RAM per instrument. The memory usage can be decreased roughly linearly by decreasing the hours of data stored for 1-second charts (halving the hours will roughly half the memory usage).
2. CPU requirements
Any modern CPU will suffice. With Intel Core i7 950 @3.07GHz, the software runs on 15 instruments with several charts displayed at 0-1% CPU at all times.