i have been using AMD gpu and now m using nvidia gpu i dont think it makes any difference in games what does that even mean best possible performance :s thats the lamest thing i have ever heard i think what ever u are getting best in ur budget is best for u. not gonna reply here anymore
You most likely don't pay attention to services/features that improve gaming experience, you just run things at default. With vanilla approach to gaming experience, what kind of difference you are going to notice?
NVIDIA offers several features/services at both hardware and software levels that enhance your gaming experience. But YOU have to take advantage of them.
For example:-
GeForce Experience application (coupled with driver package) have made management processes convenient for the users such as capturing screenshots during gameplay sessions, using officially recommended settings for each game as per your GPU, driver and application updates and more. This service have been a blessing for NVIDIA users and inspired AMD to launch its own alternative (with support from another company and product is still in beta phase):
AMD Partners with Raptr to Launch Rival App to GeForce Experience | techPowerUp (This shows how much AMD is lacking in services department in comparison to competition)
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Apart from the quality services, NVIDIA GPU come equipped with features such as
PhysX,
Adaptive V-Sync and
TXAA which can significantly enhance graphics quality in supported applications. Once you get used to these features, vanilla gaming experience no longer seems to be appealing. NVIDIA have also commenced additional projects in this respect including
GameWorks and
G-Sync.
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If you just care about FPS then you aren't paying attention. You will get good FPS from both AMD and NVIDIA GPU but the real differentiation lay in gaming experience enhancing capabilities.
So-called nuetrals like you are no good for these type of debates.
LEARN how to use your hardware.
And "not gonna reply here anymore" is supposed to be a taunt? Grow up please.