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nVidia GeForce GT 640M: první Kepler otestován – v Ultrabooku! - Cnews.cz
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/cdn.vox-cdn.com/uploads/chorus_asset/file/2609278/nvidia-kepler-mobile005.1332376590.jpg "Nvidia GeForce GT 640M, 650M, and GTX 660M debut, bring 28nm Kepler to mobile GPUs - The Verge")
Nvidia GeForce GT 640M, 650M, and GTX 660M debut, bring 28nm Kepler to mobile GPUs - The Verge
NVIDIA GeForce GT 640M: Kepler Goes Mobile with Acer | HotHardware
NVIDIA GeForce GT 640M Specs | TechPowerUp GPU Database
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Nvidia GeForce GT 640 review | 55 facts and highlights
/cdn.vox-cdn.com/uploads/chorus_asset/file/12796647/nvidia-kepler-mobile006.1419966379.jpg "Nvidia GeForce GT 640M, 650M, and GTX 660M debut, bring 28nm Kepler to mobile GPUs - The Verge")