I taped several shows on a 475mhz AMD k6-2 with 256mb ram. CDWave had a tendency to lock up at teh start of the second set(after i changed the d/l file name). I don't know why it would happen right there. But once I restarted, it was fine. So I would think you could get away with just about anything from that range upwards. If the computer is stable, then you are fine. If you can get something with a little more ram, then I think you would be all set! good luck