Hello, another question here.

If i change my AMD card with another AMD card, do i need to do something first or i can just pull the old card and insert the new one ? 

Thanks.

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Gigabyte GA-Z77X-D3H, Intel i5 3570k,  2x4 GB Kingston, XFX HD 6870, Seasonic M12II 850W, Windows 7 Ultimate x64, Seagate 500GB, Seagate 2TB

Uninstall the drivers before you shut down and change the card , that's about all you need to do. Some would say use DriverSweeper/DriverCleaner but it's not really necessary.

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Crosshair IV Formula, Phenom II x4 965 w/ Corsair H60, 8 GiB OCZ Platinum DDR3 1600, XFX HD 7970 Ghz, 512GB Vertex 4, 256GB Vector, 240GB Agility 3, Creative X-Fi Titanium w/ Creative Gigaworks S750, SeaSonic X750, HP ZR2440w, Win 7 Ultimate x64

I see, i though reinstalling the driver again is not necessary because of the cards are from AMD. 

Thanks BZ.

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Gigabyte GA-Z77X-D3H, Intel i5 3570k,  2x4 GB Kingston, XFX HD 6870, Seasonic M12II 850W, Windows 7 Ultimate x64, Seagate 500GB, Seagate 2TB