Once you find out what style of graphics card fits into your PC and works with your monitor, then comes the choice of how much you want to pay, video cards come with a ton of options. Here are a list of things to can get with your money and what they do.
The first things video memory, more video memory means more detailed images, but also means that you're going to have to pay quite a bit more, if you have Windows 7 is recommended that you run at least a 256 MB video memory card. Cheaper cards come with very little of their own memory, so that they rob your computer memory, which in turn slows down your computer. There are two main brands of graphic cards, there is NVIDIA and AMD, you'll get the most technical support and highest quality products if you buy from either of these brands, if you buy from a different brand. You can usually get the product for cheaper, the odds on the manuals will be in comprehensive, and you'll have barely any technical support if any at all. You can also get dual monitor support, most video cards will come with at least two ports, meaning that you can plug two monitors into them, some will even come with three ports, making it possible to plug in three monitors, which is the maximum possible, additional ports usually only add a few more dollars to the price, and are nice option for future compatibility. Most sound cards come with fans, quieter fans cost more money.
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Ben is always writing articles about various things, though he much prefers making websites about things like Lightweight Vacuum Cleaners and Bosch Vacuum Cleaners