I would say it’s comparable to the 100 MHz bump between the TR1 and the TR2, which I’ve experienced. It’s noticeable in some things like mp3 encoding or Photoshop filters, but only barely. You only save a few seconds here and there at best. Going from 1.0GHz on my TR to 1.7GHz on my S was a huge step up, but from the TR3 to the TR5 will only be a marginal improvement.