G.SKILL Ripjaws X Series 16GB (4 x 4GB) DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9Q-16GBXL - Newegg.com
G.SKILL RIPJAWS X SERIES DDR3 1600MHZ 8GB (2 X 4GB) DESKTOP MEMORY T9-E5 | eBay
G.SKILL Ripjaws X Series 8GB (2 x 4GB) Desktop Memory, 240-Pin DDR3 SDRAM, 1600 MHz, PC3 12800 (F3-12800CL9D-8GBXL) at Amazon.com
G.Skill Ripjaws X Series 16 GB (2 x 8 GB) 240-Pin SDRAM (PC3-12800) DDR3 1600 CL10-10-10-30 1.50V Dual Channel Desktop Memory Model F3-12800CL10D-16GBXL at Amazon.com
G.SKILL F3-1600C9D-16GXM Ripjaws X Series 16GB (2 x 8GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory at Amazon.com