> >You can't do an apples-apples comparison on the G3 because it's got no > >built-in video to compare it with. You can on the 7500. Do you know > >where there's any kind of report on that?
> The Beige G3 has built in video. The Rev. A Beige G3s have ATI Rage > II video on the motherboard which is not accelerated for OS X and the > Rev. B has ATI Rage Pro video on the motherboard which is (minimally) > accelerated for OS X. Aha. I do not have and have never seen a Beige G3, and I read in multiple places that it always used the PCI bus for video, I assumed that meant it was a separate graphics card rather than something like motherboard graphics on the PCI bus. Is the Beige G3 video choked like that? > If you install a PCI ATI Rage128 or better card in a 7300-9600, it's > video is much faster than either of the Beiges using it's motherboard > video, because the Rage128 chip is much better than both older Rages. Hmmm. I'm going to have to go back to the documentation. Where would I look for information on 2d acceleration in Quartz? > I could discuss some subtleties of Bus speeds vs PCI bus speeds but > the short answer is: the PCI bus can transfer 133 MB/sec but the > Beige only transfers data at 66 MB/sec thru it's MBoard bus. Why so slow? It's a 64-bit bus at 66 MHz, which should give it 528 MB/s. I know the 7500 at least supports interleaved memory access, which means it should be able to peak at 400 MB/s. Is there some problem with the Beige G3 bus or video? > The 7300-9600s only get 50 MB/sec. Again, are you absolutely sure? What's the point of interleaved RAM if the bus is slower than the 16-bit 25-33 MHz bus (50-66 MB/s) in a Quadra? > BTW: adding a G4 to either Mac will increase it's data transfers by > 50-60% vs. a G3, so get one! How does that work? Unless your app is using Altivec, there shouldn't be that much of a difference. > In OS X, the PCI Rage128 is *much* faster than the 7300-9600's "50 > MHz" onboard video, It is also *much* faster than the Beige's > "66MHz" onboard video. I have installed it in both of these machines > and it works very well, noticeably faster than the motherboard video > on both. I hate to be a nag, but can you quantify that? What kinds of operations? > Video speed is slower in OS X in slower computers (less than 800 MHz > G4) under Millions of colors than under Thousands. That's not what I observed. Have you actually checked this with the stock 7x00 video? Mac OS X appears to *always* render in 24-bit, and only dither when actually displaying the pre-rendered windows. Dragging a partially transparent window is particularly impacted by this, because it can't perform any block operations: it has to redither for every frame. -- Unsupported OS X is sponsored by <http://lowendmac.com/> Support Low End Mac <http://lowendmac.com/lists/support.html> Unsupported OS X list info <http://lowendmac.com/lists/unsupported.html> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive <http://www.mail-archive.com/unsupportedosx%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
