On Monday 21 August 2006 15:57, Dieter wrote: > > > Very few machines that the OGC would go into have PCI-X. So you only > > > get "plain" PCI. And you have to share that 133 MBps with the other > > > PCI devices. And lots of machines have other important > > > high-bandwidth devices on the PCI bus. > > > > > > That's fine for mostly static things like most desktop apps. Email, > > > spreadsheet, image viewer, most web browser use, ... > > > > > > But many (most?) users are going to want to be able to watch video. > > > OGC is supposed to support 2 dual-link displays. Last I read, > > > OGC is not going to have an mpeg decoder, and even the hw scaler has > > > been dropped. Even if the CPU is fast enough (most will not be), and > > > even if you give 100% of the PCI bus to the OGC (not realistic), and > > > only driving 1 display, the bits just don't fit. > > > > We can use the drawing engine to do hardware scaling, and there will > > be=20 colourspace conversion. That is, we'll have hardware support for=20 > > XVideo. Most of the consumer cards in use today don't offer more than=20 > > that, and it works just fine here watching DVDs (Athlon XP 1700+,=20 > > Radeon VE QY 32MB AGP). > > DVD is just SD. Try 1920x1080. Can the 1700+ and Radeon do that? > What is the CPU percent idle?
My system can't handle HD MPEG4 decoding and playback. This a Radeon 9800XT on AGP8x, with a Athlon 64 3200+ and a gig of RAM. However, DVDs work just fine. I hypothesise that *any* HD playback requires either PCIe or PCI-X or on-graphics-card decoding and scaling to work. Peter -- Fisher Society publicity officer http://tinyurl.com/o39w2 CUSBC novices, match and league secretary http://tinyurl.com/mwrc9 Quake II build tools maintainer http://tinyurl.com/fkldd v2sw6YShw7$ln5pr6ck3ma8u6/8Lw3+2m0l7Ci6e4+8t4Eb8Aen5+6g6Pa2Xs5MSr5p4 hackerkey.com
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