VRDPKR,
The processor speed of your computer has little relevance vis a vis recording to the computer per se. The creation of a sound file uses very little of the processor's time or power. Any computer currently for sale, whether Wintel or Apple, is plenty fast as far as recording is concerned.

Processor speed is a little more relevant when it comes to editing sound files, but only a little more. Again, any computer currently for sale is fast enough for editing sound files.

However, Amos is right. The more computer you buy the better off you'll be in the long run. The computer will have a longer shelf life.