Video card compatibility?

I'm trying to buy a new video card for my computer.. but I have no idea what to buy. After doing some research, I found out that there are PCI, AGP, and PCI Express video cards. How do I know which one will work with my computer? It's a gateway and I bought it in 2001.



thanks.|||PCI and AGP are old technologies for a video card. Your computer most likely uses an AGP slot for video. The best way to verify that is to refer to any manuals included with the computer and if you don't have those available check the gateway website under support and enter your serial number for Computers prior to 2004. You can also google your Model Number and see what information comes up.



After determining if it uses AGP then go to www.newegg.com and search for AGP video cards. There are still a few out there being sold.|||2001 Gateway, hopefully AGP but it is very possible you have onboard graphics in which case the only option would be PCI and if that is the case don't waste your time or money. Would need to know the model number of your Gateway to help further.|||It depends on what expansion card slot is in your system, we could find the specifications of that computer if you tell us the make and model.|||It won't be PCI Express; it is much to new to be found in a PC made in 2001. It will either be AGP, PCI Express or integrated graphics. You need to know what computer you have as you may not be able to upgrade the graphics at all. Some computers were just not made to be upgradeable.