Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I am considering buying a very-low-latency audio interface like this one. One question is if it will reduce CPU load (I'm at about 60%+ and my Macbook has 2.4ghz and 4gigs ram) during intensive audio processing.

If the answer is "yes," how will it compare to a different, cheaper firewire audio interface? My thought is that offloading the processing is always the same gain, regardless.

share|improve this question
add comment

1 Answer 1

up vote 2 down vote accepted

Using a USB device will gain you some, but not completely free your CPU. While you don't need to process audio, you do still need to control the relatively dumb USB interface, which can go as high as 30% depending on the load.

FireWire is a more intelligent interface and will only take up about a third as much CPU in order to maintain the same throughput, but the varying capabilities of the devices may mean that the FireWire device does more audio processing in the computer and less in the device.

share|improve this answer
    
Interesting answer +1, though the conclusion seems to be, "try them out in an A/B test." I'll report back if I manage to test this. –  Yar Apr 3 '10 at 10:25
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.