Ask Different is a question and answer site for power users of Apple hardware and software. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

A while back, my MacBook Pro died. It was an older machine (2007 I think), with a Core 2 Duo processor. I was doing regular backups through Time Machine. I bought a I7 MBP, and re-staged the new system by restoring from the Time Machine backup.

The performance of the new machine is not quite what I expected. It crashes fairly frequently, and seems to page-out memory even though I installed 16GB of RAM.

Would it be worthwhile to reinstall the OS? Is it possible that the OS restored from Time Machine is not taking full advantage of the new machine's processor and RAM?

share|improve this question

Though any Mac OS install includes all the bits needed to run most modern Macs, it's generally helpful to build a fresh install with a new computer and processor. I find it's best to do a fresh install (erasing the drive) and then migrate the user from the Time Machine backup. The user migration process is amazingly thorough.

share|improve this answer

Your Answer


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.