How to Determine if iMac (previous gen.) can take 6 GB RAM

[jdc]

if you check the OWC site, it will tell you what you can take or not... i think you are limited to 4 -- it was the previous models that do 6 -- but still $180 like pinkoos said (which is actually cheaper than i paid for my 4 gigs when i first bought my imac...)

http://eshop.macsales.com/shop/apple/memory/iMac