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Nvidia Settings is not showing Xserver settings and vaapi driver not working for Geforce 840M - Fedora Discussion
How can gaming performance be improved for a setup with Lenovo z50-70, 2.6 GHz i7 4th gen, GeForce 840m, 4096 mb VRAM, 8 gb DDR3 RAM? - Quora
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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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