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Refurbished N15S-GT-S-A2 GeForce GT 840M graphics chip GPU BGA Chipset re-balled tested 100% good working
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MSI 15.6" Full HD Gaming Laptop, Intel Core i7 i7-4710HQ, NVIDIA GeForce GT 840M 2 GB, 1TB HD, DVD Writer, Windows 8.1, GP60 Leopard-472 - Walmart.com
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Lenovo 59430541 15.6-inch Laptop (Core i5/8GB/1TB/Windows 8/NVIDIA GeForce 840M (N15S-GT)/with Laptop Bag), Silver : Amazon.in: Computers & Accessories
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NVIDIA GeForce 940M shows around 10% performance leap over GeForce 840M in early benchmark results | LaptopMedia.com
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