Working well on 2008 iMac, 4 gig Ram, original hard drive.
Had considered upping RAM to 6gig, but not sure the cost is worth it. I was waiting for Mavericks to come out to see how well the new memory management worked, and meanwhile the cost of a 4gig stick kept creeping up, $92 now.
Still getting page outs, but memory pressure seems aright, and the OS is doing a way better job releasing inactive ram than ML ever did.
Performance much more acceptable.
I think an SSD is probably all I need to whip the old dog into shape and get another 5 years out of it.😉
Kinda sucks the new iMovie is too much for the HD 2600 graphics card though.
All in all, pretty happy with Mavericks.