Are most video cards compatible with most computers?

I am going to upgrade from windows xp to windows vista soon, and need a new video card. I have been looking around, and no video cards say what computers they are compatible with, so i am wondering if most video cards are compatible with most all computers. (In case there are any suggestions for a good video card to get that will be compatible with my computer, i have a hp pavilion a706n)

Are most video cards compatible with most computers?
You have to buy one that will work for your computer. Run the DXDIAG utility and click the DISPLAY tab to get all the information about your current display card. Take that information to Best Buy and let them show you what will work for your system.





Start%26gt; RUN%26gt; DxDiag
Reply:yes





-if it is a PCIe card, then make sure your computer has a PCIe slot.


-Make sure your power supply has adequate power


thats all you should worry about.
Reply:a PCI card will be compatible with a PCI slot and so fourth...if you mean will a brand new 2008 video card be compatible with a computer made 10 years ago, I would try it if I were you..
Reply:When buying a video card, you need to find out if you have AGP, PCI, or PCIE. What I have read about your computer, you might have a AGP slot.





If you have the AGP slot, you might have to go with the AGP ATI 2600 Pro 512mb. This will run vista applications. If you don't need the fancy features, you may look into the DX9 only cards, like the ATI 1650 or the nVidia 7900.





Also, make sure you have a good power supply as 450W will be needed.