I have an early 2008 macbook running OS X 10.5.8. It has a 2.1 GHz Core 2 Duo, 1 GB 667 MHz DDR2, and a 120GB 5400 RPM drive. It’s model MacBook 4,1. Obviously, it could use some upgrades. It still works fine, but is just slow. I can’t afford a new one, and think I can still get some life out of this one. I am thinking about the following upgrades: Samsung 840 EVO 120GB SSD - http://www.newegg.com/Product/Product.aspx?Item=N82E16820147247 OWC 4GB (2x2) Memory Upgrade - http://eshop.macsales.com/item/Other World Computing/5300DDR2S4GP/ Transcend USB 2.0 Enclosure for the old hard drive currently in it - http://www.newegg.com/Product/Product.aspx?Item=N82E16817349001 I also plan on putting OS X 10.7 (lion) on the new SSD, unless anybody thinks keeping it at Leopard or Snow Leopard would be a better choice, performance wise. Does anybody see any compatibility issue with any of these upgrades, or have any suggestions as to better upgrades? I realize the MacBook can only support SATA I, so it won’t get the full SATA III benefit of the SSD, but it should still be a huge performance upgrade. Thank you for any help!