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Assessing high-definition video processing.

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| January 01, 2007 | COPYRIGHT 2007 Incisive Media, published with the permission of Incisive Media. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)Copyright

Byline: Emil Larsen

Assessing high-definition video processing

While DirectX 10 has stolen a lot of the limelight surrounding the latest generation of graphics cards, high-definition video processing has improved considerably too.

Nvidia calls the video-processing software for its Geforce 8 graphics cards Purevideo HD. Geforce 8800 cards contain Purevideo 1 hardware (the same as most Geforce 7 cards) and Geforce 8600 and 8500 cards have Purevideo 2, which can offload more work from the CPU. By offloading video processing from the CPU, you can do other things in the background or run high-definition video on systems with low-end processors. Purevideo also promises to sharpen video, reduce noise inherent in movies and improve image quality.

ATI calls its competing software Avivo HD, which promises to do roughly the same thing as Purevideo. ATI Radeon HD 2400 and 2600 series cards include ATI's universal video decoder (UVD).

The Radeon HD 2900XT lacks dedicated decoding hardware because ATI claims this design has enough grunt to decode video using the large number of stream processors onboard its chip. To assess high-definition video quality, we used HQV (high quality video) HD Benchmark by Silicon Optix (www.siliconoptix.com). It's important to stress that HQV HD is a subjective visual test and scoring will vary. The test contains five 1,920x1,080 resolution tests and asks the ...

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Source: HighBeam Research, Assessing high-definition video processing.