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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
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
G.Skill Ripjaws X 16GB (2 x 8GB) DDR3-1600 PC3-12800 CL9 Dual Channel Desktop Memory Kit F3-16000C9D-16GXM - Blue - Micro Center
G.SKILL Ripjaws X Series 32GB (4 x 8GB) DDR3 1600 (PC3 12800) Desktop Memory Model F3-1600C9Q-32GXM - Newegg.com