I have a 24-inch iMac (early 2008) with 2GB RAM, running OS X 10.8. What's the cheapest way to get this running fast? I always planned to upgrade the RAM to the 6GB option, but never had the money. I know 2GB is pretty pitiful. Or will there be a noticeable difference over 4GB? I run memory intensive apps frequently, so I would be inclined to think so. My HDD is a 320GB SATA disk which is in place of the original drive which failed about two years ago. I don't really have an issue with space. Should I just replace the entire drive with an SDD? Would this get me running close to a new iMac, or thereabouts? Thanks!