You can upgrade it from Intel x4500 to Nvidia 210m. You have to find the motherboard and change it. Really bad nvidia card, not worth it at all.
You cannot change your laptops graphic card.
http://shopap.lenovo.com/ISS_Static/WW/ap/common/products/pdf/G450_asean.pdf http://www.geekwithlaptop.com/lenovo-g550-notebook they look the same
To upgrade your Lenovo S660 to Kitkat, you have to root it first using the Framaroot-Guide.
You can upgrade your Lenovo S660 to Android KitKat using the Android 4.4.3 KitKat update for Moto E.
Your Lenovo S660 can be upgraded to Android KitKat using the Android 4.4.3 KitKat update for Moto E.
If you have already rooted your Lenovo S660, you can upgrade it to Kitkat using the link: http://gadgetsacademy.com/update-galaxy-s5-android-kitkat-4-4-2-xxu1ane2-firmware/ .
You can upgrade/update your 'Graphic Card' on ANY laptop or computer 'Video Card' = 'Graphic Card' Search 'Video Card' for more help.
install new version from VMware
No you can't unless you change the motherboard.
NACA 0012 with modifications?
Depend on your activity, for office it's not recommended to upgrade, but for gaming, and furthermore a recent released games, you need to upgrade to mainstream graphic card to play it without a glitch.
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