Radeon is the brand name for graphics card manufactured by the ATI Company. There are many graphics cards for a desktop computer from Radeon for connecting dual monitors to a single computer system. The Radeon graphics cards can have different connector types such as dual head 15-pin VGA connector, DVI connectors, etc. The connector type is one of the important things to note about a dual head graphics card. You would need dual monitors with the same connector type as supported by your dual monitor graphics card or in case the connector type in the graphics card does not match with your monitors, then you would need converter(s) to connect your monitor(s) with the graphics card. This blog entry talks about different types of ATI Radeon dual monitor graphics cards and lists of few Radeon dual monitor graphic cards.

Radeon Graphic Cards Series

Radeon graphics cards come in  many series which is classified according to the application programming interface and Direct X technology supported where Direct X is an of API  using which graphics intensive programs are written (such as video games, etc). The series of ATI Radeon graphic cards depends on the application programmable interface (API) as mentioned below.
Direct X 9.0  Technology  Series are Radeon 9500 – 9800, X300 – X600, X1050
Direct X 9.0b Technology Series are Radeon X700 – X850
Direct X 9.0c Technology Series of  Radeon  X1300 – X1950
Direct X 10.0 High Definition  2400 HD 2600 and HD 2900

The series of graphics cards included with Direct X 9.0b , 9.0c , 10.0 technology are classified in the group OpenGL.  Now a days almost all the latest technology  ATI Radeon Graphics cards support OpenGL.

List of  Few Radeon Dual Monitor  Graphics Cards
Given below are few of the Radeon Dual Monitor Graphic Cards in the rough price range of $90 to $400 depending upon the series, memory capacity, processor speed, etc.

• 512MB ATI RADEON X1650PRO PCI-E Express Dual VGA/DVI  
• Radeon HD 2600XT 256MB GDDR3 PCI Ex16.
• Radeon HD 2600XT 512MB GDDR3 PCI Ex16.
• Radeon HD 2600XT 256MB GDDR4 PCI Ex16.
• Radeon 7500.

The above information is provided for reference purpose only. Please do a little more research (A good place to start may be at the ATI Radeon website) to find out more information about the dual monitor graphic cards by ATI Radeon. However other entries in this blog can be helpful as well to know more about dual monitor graphics cards.