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G.SKILL Ripjaws X Series 16GB (2 x 8GB) DDR3 2400 (PC3 19200) Desktop Memory Model F3-2400C11D-16GXM Desktop Memory - Newegg.com
G.Skill Ripjaws X 16GB (2 x 8GB) DDR3-1600 PC3-12800 CL10 Dual Channel Desktop Memory Kit F3-12800CL10D-16GBXL - Red - Micro Center
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