Hi,
in the MacUp (a german magazin) from januar 2000, they have
tested the performance of the Rage 128 (AGP and PCI) and the Voodoo
3, playing the games Unreal and Quake. (I am not a gamer)
The test were performed using a B&W G3/400 and a Sawtooth G4/400 (AGP 2x).
The PCI Rage, when plugged in the PCI/66 slot, had the same
performance than the AGP Rage.
When the PCI Rage was plugged in a PCI/33 slot, the performance was
between 3% and 10 % lower.
As far as I know, the principal difference between AGP 2x and PCI/66
is that the graphics card can use the main RAM to store textures
(probably this is achieved with a separated DMA channel).
This ability is used only when it is required, and that is unlikely
to happen if the board has enough video-RAM
AGP 4x is, of course, faster than PCI/66
So, unless that someone gives me a good technical reason, the
decision not to allow the no-AGP Macs to run Quartz Extreme (if you
install a Radeon 7000) seems for me to be only a commercial one.
Rgds, Fernando
PD By the way, how good is the Radeon 7000 in 2D work, compared to
the Rage 128?
>From: Jason R Gorst <[EMAIL PROTECTED]>
>
>The Radeon 7000 Mac Edition is a PCI card. The PCI bus doesn't provide
>enough bandwidth for QE. This means no QE on anything older than a
>Sawtooth.
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