Amazon.com: Dell Studio XPS 1645 Laptops pack the power you need for work or play, Intel Core i7-820QM Quad Core Processor 1.73GHz (3.06GHz Turbo Mode, 8MB Cache), 6GB Dual Channel DDR3 SDRAM
6gb ram ddr3 | Newegg.com
Amazon.in: Buy Corsair Vengeance DDR3 6GB RAM (CMZ6GX3M3A1600C9) Online at Low Prices in India | Corsair Reviews & Ratings