![]() It played back flawlessly at hd rez, but both cpuz and gpuz said that both the video card gpu and the cpu were seeing high usage. I opened the clip in sony vegas, which supports gpu acceleration(one card only). I tried that last clip on my gaming/editing computer, which is effectively 8 cores overclocked to 4ghz, with twin video cards, a 7950/7970 combo. need to test it with a gpu-assisted software player. Qt pegged the cpu pretty hard on both cores, playing at hd resolution, not smoothly. I tried this today, downloading the last clip, but unfortunately the only software players that i have on that computer are windows media player and quicktime, which is pretty primitive, no gpu acceleration i think. So it looks like the person who complained about AMD not supporting 4k video decoding might have been on to something? For both content we have additional shaders enabled like image sharpening and darkened black levels." Unfortunately Ultra HD videoplayback resulted into stuttering. Above the 4K resolution Elysium Trailer, here we have an MP4 H.264 file and you can see that the CPU load is 52% with one core topping out performance. We also tested Ultra HD video acceleration. ![]() We have some extra shaders enabled like complex Image Sharpening. You'll notice a CPU load of give or take 4% here, power consumption at this stage is roughly 76 Watts for the entire PC. "Above an example of 1080P Muse in MKV x.264 format. "The Radeon R9 285 is AMD’s first discrete GPU with a redesigned fixed-function decoder (UVD – Unified Video Decoder) that supports full hardware decode of 4K H.264 videos."Īnd further, in Guru3d's earlier review (January 2014) of the AMD A8 7600 quad-core processor w/built in graphics, they tested its video playback performance and while it didn't break a sweat on 1080p, the processor choked on 4K and could not play it back smoothly. It's a January 2014 post from AVSforum, where someone was complaining about the situation with AMD and their lack of 4k video support:Īnd on a related note, I found a recent review (September of 2014) from of the AMD R9 285, and they note: ![]() I found the page that gave me the idea that AMD doesn't support 4k h.264 acceleration. ![]()
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