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We used perfmon to record the CPU utilization on our testbed Athlon 64 3500+ and reported the minimun, average and maximum CPU utilization values during the playback of the trailer. Our test of choice was the third Chronicles of Narnia trailer from Apple's HD gallery. ATI has told us that there are bound to be issues with the decoder, thanks to its beta state, but it is at least functional in most cases and the final version should be available next week.
Unfortunately, due to the beta nature of the decoder, we couldn't get all of the content to work.
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ATI did mention that they are working on bringing those limits down, but that is a time intensive driver and algorithm optimization process that may or may not happen.įor our tests, we used a Radeon X1600 XT and paired it with some 720p content from Apple's Quicktime HD gallery.
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Radeon X1300 owners will be able to get hardware acceleration at up to 480p, X1600 owners get it for 720p, and X1800 owners get full acceleration at up to 1080p. ATI tells us that the limitations are not artificial, and they are directly related to the number of functioning ALUs on the GPU (in other words, the more pixel pipes you have, the more processing power you have). As you can guess, this only works on Radeon X1000 series GPUs.īecause H.264 decoding is an extremely processor intensive task, the level of acceleration that you can get varies based on what type of GPU you have. The decoder will let you play all H.264 encoded movies, including H.264 Quicktime movies in Windows Media Player, and of course, they are all GPU accelerated.
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The bundle also includes an ATI skin for Windows Media Player, but thankfully, you can revert back to the original WMP skin.
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You just install the Cyberlink H.264 decoder, which then lets you play, with ATI GPU acceleration, H.264 content in Windows Media Player. So how does it work? It's all fairly simple. ATI's work on H.264 decode acceleration today is extremely important because H.264 is the codec of choice for both Blu-ray and HD-DVD.
The end result is that CPU utilization is reduced, making the playback of H.264 movies possible on lower end systems and have less of a performance impact on all systems. Right now, ATI is hoping to have the final version available on the 22nd. Unfortunately, ATI only had a beta ready for us in time for this review, so there were some bugs. More specifically, ATI's Radeon X1000 GPU in combination with the Cyberlink H.264 decoder will handle the in-loop deblocking, motion compensation and inverse transform that occur during H.264 decoding. Starting next Tuesday, Radeon X1000 owners will be able to download, for free, ATI's Catalyst 5.13 driver and a Cyberlink H.264 decoder that hooks into ATI's GPU and enables hardware acceleration of H.264. One of the things that ATI had promised us was that by the end of the year, their Radeon X1000 series of GPUs would have hardware accelerated H.264 decode support and with Catalyst 5.13, ATI is delivering on that promise.
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