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G.SKILL Ripjaws X Series 8GB (2 x 4GB) DDR3 2400MHZ Desktop Memory Model F3-2400C11D-8GXM 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
GSKILL RipjawsX 4GB DDR3 1600Mhz CL9 Review
G. SKILL DDR3 SDRAM 4 GB Capacity per Module Memory (RAM) for sale | eBay