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Re: About the computational power of g4 machines

On Sat, 2009-05-16 at 09:06 -0300, Rogério Brito wrote:
> On May 16 2009, drz wrote:
> > Am Samstag 16 Mai 2009 09:59:50 schrieb Rogério Brito:
> > > http://images.apple.com/movies/us/hd_gallery/gl1800/480p/gilmour_480p.mov
> > > http://images.apple.com/movies/us/hd_gallery/gl1800/720p/gilmour_720p.mov
> > > http://images.apple.com/movies/us/hd_gallery/gl1800/1080p/gilmour_1080p.mov
> >
> > 1080p is not viewable here (with compiz activated, didnt try without, graphics 
> > hardware see below)

IME you won't be able to really enjoy any kind of HD (i.e. 720 or 1080)
content on a G4 800 MHz iBook.

> > > Another question: is a Radeon 7500 mobility with 32MB of VRAM able to
> > > use compiz and similars?
> >
> > I guess this will be a little too less for compiz, but I dont really
> > know.
> I have something in the back of my memory of Michel Dänzer saying the
> memory consumption of DRI 1 a loooong time ago. This excluded my 8MB
> Rage 128 M3, unless I used 16 bits per pixel (which, at the time, as a
> side effect enabled DMA for XV, which was my main purpose, as I was
> interested in playing DVDs with my iBook G3 600MHz).
> OTOH, not too long ago, I reported that my Matrox G400 16MB wouldn't run
> Ubuntu's compiz and the reply that I received back was that 16MB was too
> little memory. :-/

That's kind of oversimplified, but generally I'd say that compiz should
basically work with the iBook you're considering, though it may be a
little tight depending on what exactly you're doing.

> The opportunity that I have is to purchase an iBook G4 800MHz. As I have
> never used a machine with Altivec before, I don't know how it would be
> useful for playing, say, DVDs with de-interlacing enabled or some MPEG-4
> Part 2 or some H.264 videos.
> Playing such videos would be the most "real time" demanding applications
> that I would have.

Altivec should help somewhat for video playback, but I wouldn't expect
any miracles from it.

> Others would be to compile things for Debian.

Altivec doesn't help at all for this.

Earthling Michel Dänzer           |                http://www.vmware.com
Libre software enthusiast         |          Debian, X and DRI developer

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