I have an August 2007 iMac 1,7 (2.8 Core 2 Extreme, 667MHz RAM, 4MB Cache). According to everymac.com, it will support 6GB of RAM (1 x 2GB and 1 x 4GB). I'm having trouble finding a UK supplier for a single 4GB stick. Can anyone point me to a supplier? Crucial doesn't have them. I did find this on Amazon.uk but I don't know if it will be compatible: http://www.amazon.co.uk/DDR2-SODIMM...3J4M/ref=sr_1_9?ie=UTF8&qid=1292326200&sr=8-9 Is anyone out there running one of these machines with 6 gigs and can confirm that it will work? And where can I buy the stuff??? Thanks Cams PS. I'm running Snow Leopard.