Low Latency DDR2 800MHz versus 1,066MHz | bit-tech.net
F2-8500CL5D-4GBPI-B - G.Skill PI Black 4GB Kit (2 X 2GB) DDR2-1066MHz — Tech Network Supply LLC
OWC 8 GB (2 X 4GB) ram PC8500 DDR3 1066MHz sodimm 204-pin Memory Upgrade Kit, (OWC8566DDR3S8GP), Compatible with MacBook Pro, MacBook, Mac Mini and iMac at Amazon.com