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Poster | Thread | Hammer
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Re: Dave Haynie expresses thoughts on Natami and X1000 Posted on 21-Apr-2011 11:34:12
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Elite Member |
Joined: 9-Mar-2003 Posts: 5290
From: Australia | | |
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| @hazydave
Quote:
hazydave wrote: @Rassilon Quote:
Rassilon wrote: What you said about RAW image loading, h264 decoding etc is very true, however PCs circumvent some of those issues with GPU hardware assists. But as you say a G3 class CPU won't cut it.
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Actually, GPU acceleration can be a very big thing. I have a dual core, Core2 laptop at 2.4GHz, which can just barely play back standard 1080/60i video... forget 1080/60p. Even on my six core AMD desktop, 1080/60p playback can go as high as 60% of all CPU, depending on which player you use.
But run a player that uses GPU acceleration (even Windows Media Player, in Windows 7), and the CPU load drops down to about 6%. That's via the DXVA 2.0 API, which isn't general purpose computing like OpenCL, but dedicated specifically to video rendering. And this is with a nVidia 8800GT GPU... hardly the latest thing.
This is also why I loved the idea of AmigaOS for PPC on the PS3. The PS3 CPU is no match for even a cheapish desktop (3.2GHz, but very simple design for a PPC), but between the GPU and the SPEs, the PS3 can decode multiple HD streams.
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STI CELL vs Intel Core i7
From http://forum.doom9.org/archive/index.php/t-109002.html
"under XMB, they managed to decode FullHD H264 clip up to 50Mbps with only 3 SPEs."
Toshiba's SPE based solution includes H264 decode/encode hardware.
From http://forum.doom9.org/showthread.php?t=157701
"The Cell is a pretty slow CPU. It takes roughly 2.5 cores (out of 8) to do realtime 1080p H.264 decoding with a highly optimized decoder. A fast i7 can do that with about ~0.4 cores (out of 4 or 6)."
Last edited by Hammer on 21-Apr-2011 at 11:39 AM. Last edited by Hammer on 21-Apr-2011 at 11:38 AM.
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