Thanks for that link, Steve. According to everymac my iMac actually supports 6Gig RAM. So far, unhappily, I've discovered that 1x4GB DDR2 SODIMMs are about as plentiful as hen's teeth, but I'm still Googling, so I will remain optimistic.
Otherwise, my K-5 piggy bank will have to be busted open to pay for a new iMac this summer. BTW, does anyone know off-hand if a PC2-6400 800MHz chip would work in a socket spec'ed for a PC2-5300 667MHz chip? That is, will higher clock speed chips work at lower speeds? On Wed, Jan 18, 2012 at 2:15 AM, steve harley <[email protected]> wrote: > on 2012-01-17 06:00 Bruce Walker wrote > >> Heh. If I could expand the RAM in my 2008 iMac to 8 or 16 Gig RAM I >> would. I regularly fill 4 Gig with just Lightroom and Photoshop on a >> single K20D RAW image. You do some adjustments in Lr, then edit in Ps >> and wham! the swapping starts. Granted I do more retouching than most >> here. > > > 8GB is pretty tight for me, but then i'm already using a lot of VM for > browser tabs and other tools that embed browsers, _then_ i launch Aperture > and seem to need another 2-4GB of VM (but then, i used to edit 80-100MB > images on a Quadra 900 ...) > > you may be able to put 6GB in that iMac: > > <http://www.everymac.com/systems/by_capability/actual-maximum-ram-capacity-of-macs.html> > -- -bmw -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.

