Amazon.com: 8GB 2 X 4GB DDR3 PC3-8500 1066MHz SODIMM Memory RAM for Apple iMac Intel Core 2 Duo 20" inch 24" inch (Early 2009) Equivalent to MC016G/A (PARTS-QUICK BRAND) : Electronics
MemoryMasters 8GB DDR3 1066MHz PC3-8500 Registered ECC 1.5V CL7 4Rx8 Quad Rank 240 Pin RDIMM Server Memory Ram Module Upgrade (Server Only, Not for Desktop/Laptop) (8GB) at Amazon.com
PC3-8500 DDR3 1066 8GB RAM PC3 8500S 1066MHZ 2Rx8 204-pin 1.5v 8G Memory Upgrade for Laptop at Amazon.com
8GB [2x4GB] DDR3-1066 (PC3-8500) ECC RAM Memory Upgrade Kit for The Apple Mac Pro Quad-Core 2.66GHz 1TB 2.66GHz 1024GB (Z0G1-2.66-8GB-1TB) (Genuine A-Tech Brand) at Amazon.com
OWC 8GB PC8500 DDR3 ECC 1066MHz DIMM Memory Compatible with Mac Pro & Xserve 'Nehalem' & 'Westmere' Models (OWC8566D3ECC8GB) at Amazon.com
Kuesuny 8GB kit (2x4GB) DDR3 1066MHz/1067MHz PC3-8500 SODIMM RAM Upgrade for Late 2008, Early/Mid/Late 2009, Mid 2010 MacBook, MacBook Pro, iMac, Mac Mini at Amazon.com
Crucial 2GB Single DDR3 1066 MT/s (PC3-8500) CL7 Unbuffered UDIMM 240-Pin Desktop Memory Module CT25664BA1067 at Amazon.com