8gb 2 X 4gb Pc3-8500 Desktop Ddr3 Ram 1066 Mhz 240-pin Dimm Memory 1.5v Voltage Both Intel And Amd Are Compatible - Rams - AliExpress
8GB (2 X 4GB) DDR3 1600MHz PC3-12800 240-pin Memory RAM DIMM Kit for Desktop PC by NEMIX RAM at Amazon.com
G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model (F3-12800CL9D-8GBRL) at Amazon.com
8GB 2 x 4GB Avexir AVD3U16000904G-2CW DDR3-1600MHz 240-Pin 1.5V Non ECC RAM | Being Patient
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