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Understanding Desktop Video Cards

How to Evaluate Desktop PC Video Solutions

By Mark Kyrnin, About.com

The decision for determining what video card to get with a computer purchase is heavily dependent upon what the computer is going to be used for. I tend to find that there are four categories that people can be placed in when it comes to computer usage and video card needs: casual computing, graphic design, light gaming and serious gaming.

Before going into detail about the different categories, I will mention that it is possible to upgrade the video card on most computers. There are now two types of interfaces for the video card: AGP and PCI-Express.

AGP was the major standard for video cards in PC computers for many years and is still widely used. While it is fairly common, the industry has moved to the new PCI-Express and it is getting more difficult to find new model AGP cards.

PCI-Express is the new interface developed to help speed the interface between the CPU and interface cards. It has been quickly adopted by the industry and any new computer should feature this interface now. The reason for this being mentioned is to be sure to know which slot the computer comes with if you will be adding a video card after the purchase of the system.

Casual Computing

Casual computing tends to be those tasks related to using the computer for things such as word processing, web browsing, watching a DVD movie or listening to music. None of these tasks requires much 3D video processing power at all. For this category of computing any choice of video processor will work. It can be integrated into the computer system or be an expansion card and it should support at least a 1280x1024 resolution at 85MHz refresh rate.

Graphic Design

Individuals looking to do graphic design or even video editing will want a few more features with the video card. For graphic designs, it is generally good to have a higher resolution capability. Many high-end displays can support 1600 by 1200 resolutions or higher allowing for more visible detail. Another feature that may be of interest is multi-monitor support. This allows the graphics card to support two computer displays at once expanding the graphical workspace.

Individuals looking to do video editing also have additional needs to those of casual computing. Key to video editing is a feature called video-in/video-out or VIVO. This allows a video source to be plugged into the computer for digitizing of analog video sources such as TV or VHS tapes as well as exporting a video signal back to those devices. If the video card does not have this capability, don't worry as it is possible to add this capability with external devices.

Light Gaming

When talking about gaming, I'm referring to games that use 3D graphics acceleration. Games like solitaire or Tetris don't use any 3D acceleration and so will work fine with any form of graphics processor. If you play 3D games every once in a while or even on a regular basis and don't care about it running as fast as possible or having all the features to enhance the detail, then this is the category of card you want to look at.

Cards in this category should fully support the DirectX 9 graphics standard and have at least 64MB of video memory, preferably 128MB. They can be either AGP or PCI-Express based interface. For particular brands and models of processor, check out the selection in the Best Budget 3D Video Cards.

Serious Gaming

If your next computer is going to be an ultimate gaming system, then you want to make sure that you have a video card that matches the capabilities of the system. It should be able to support all the current 3D games on the market with acceptable frame rates with all of the graphic detail features turned on.

All performance 3D video cards should fully support DirectX 9 and have a minimum of 128MB of graphics memory or even better 256MB. The system is more likely to use the new PCI-Express interface, but an AGP 8x slot is still acceptable. For particular brands and models of processors, check out the selection in the Best Performance Video Cards.

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