R680 Has Landed: ATI Radeon HD 3870 X2

Name: R680 Has Landed: ATI Radeon HD 3870 X2 - Page 9
Brand: R680

by Marco Chiappetta — Monday, January 28, 2008, 12:00 AM EDT

We also did some quick testing of the Radeon HD 3870 X2's UVD video processing engine, in terms of both image quality and CPU utilization with our HQV and H.264 playback tests.

HQV - DVD Video Decoding and Playback Quality

Pure Video HD vs. UVD

HQV is comprised of a sampling of SD video clips and test patterns that have been specifically designed to evaluate a variety of interlaced video signal processing tasks, including decoding, de-interlacing, motion correction, noise reduction, film cadence detection, and detail enhancement. As each clip is played, the viewer is required to "score" the image based on a predetermined set of criteria. The numbers listed below are the sum of the scores for each section. We played the HQV DVD using the latest version of Cyberlink's PowerDVD, with hardware acceleration for AMD AVIVO HD and NVIDIA PureVideo HD extensions enabled.

Both ATI's and NVIDIA's current generation GPUs have no trouble with SD video playback. The Radeon HD 3870 X2 and GeForce 8800 GT put up near perfect scores in the HQV test. In case you're not familiar with HQV, 130 points is the maximum score attainable. At 128 points, a PC equipped with either of these graphics cards plays back DVD video at quality levels better than the vast majority of set-top DVD players on the market.

H.264 Video Decoding And Playback Performance

Sipping CPU Cycles

Next we conducted a test using an H.264 encoded movie trailer clip for "Beowulf" which is available for download on Apple's QuickTime website. The CPU utilization data gathered during these tests was taken from Windows Vista's built-in Performance Monitor. The graphs show the CPU utilization for a GeForce 8800 GT and a Radeon HD 3650 using PowerDVD to playback the QuickTime clip.

GeForce 8800 GT

Radeon HD 3870 X2

With a powerful quad-core processor at the heart of our test system and an unencrypted HD video clip being played, both the GeForce 8800 GT and Radeon HD 3870 X2 averaged low, single-digit CPU utilization in this test. We should note that with hardware acceleration disabled, playing this video clip results in about 12% - 15% CPU utilization, so there is a marked improvement with both PureVideo HD and UVD.

Tags: ATI, Radeon, HD, X2, LAN, Radeon HD, ATI Radeon, 680, and

Marco Chiappetta

Marco's interest in computing and technology dates all the way back to his early childhood. Even before being exposed to the Commodore P.E.T. and later the Commodore 64 in the early ‘80s, he was interested in electricity and electronics, and he still has the modded AFX cars and shop-worn soldering irons to prove it. Once he got his hands on his own Commodore 64, however, computing became Marco's passion. Throughout his academic and professional lives, Marco has worked with virtually every major platform from the TRS-80 and Amiga, to today's high end, multi-core servers. Over the years, he has worked in many fields related to technology and computing, including system design, assembly and sales, professional quality assurance testing, and technical writing. In addition to being the Managing Editor here at HotHardware for close to 15 years, Marco is also a freelance writer whose work has been published in a number of PC and technology related print publications and he is a regular fixture on HotHardware’s own Two and a Half Geeks webcast. - Contact: marco(at)hothardware(dot)com