View Full Version : Sawtooth definition?

05-08-2001, 10:08 AM
I know I have seen it on the Gurus site; but I dont know where. I am looking for a difinition of Sawtooth, yikes, etc. Any info would be much appreciated.

05-08-2001, 10:51 AM
It's under the Logic Board diagrams page - in the G4 section

Another good source of info albeit without the cool commentary and logic board diagrams is http://www.everymac.com


05-08-2001, 04:43 PM
here (http://www.macgurus.com/beta/mbppcg4agp.html) you go...


this is for the last-generation "AGP Graphics" three PCI slot version. The latest "digital-audio" Sawtooth, with four PCI slots, is not yet represented.

the major differences: "digital-audio:" four PCI slots and three PC133 SDRAM DIMM slots....versus "AGP Graphics:" three PCI slots and four PC100 SDRAM slots.

the logic board layouts are otherwise very similar.

05-12-2001, 11:35 PM
Display memory on the AGP ATI Rage Pro graphics card is separate from main memory. Display memory consists of 16MB 140MHz SDRAM
WOW - 140Mhz... http://www.macgurus.com/ubb/cool.gif I thought it was only 110Mhz.

devices configured along a 128-bit data bus. Display memory cannot be expanded by the user. Analog displays enjoy support for pixel depths of 8-bits, 16-bits, or 32-bits, and resolutions up to 1280 x 1024. Resolutions up to 1920 x 1080 are feasible, but only in 8-bit or 16-bit color. Digital "flat-panel" displays can utilize color depths between 8-bits and 32-bits, with a maximum resolution of 1600 x 1024.

This 16bit limit for 1920x1080 does not seem right. 16MB of VRAM should do much for 2D

1920x1080=2,073,600 pixels or bits
2,073,600pixels * 32bits/pixel = 66,355,200 bits = 8,294,400 bytes = 8,100KB ~ 8MB.