[Powerbook]

I got this info from the guys around ATICellerator, regarding the Radeon 9700 mobile in the Powerbook G4:

- Apple setting 9700 mobile GPU 391,50 MHz / Memory 202,50 MHz
- ATI setting 9700 mobile GPU 455 MHz / Memory 260 MHz
- he even claims to have reached GPU 515,25 MHz / Memory 265,50 Mhz

I can't get over 425 MHz without getting artifacts. I know every chip behaves different, but still, if Apple basically underclocks these cards, why can't I reach the original numbers?

Regards
PB.

[mduell]

Probably a combination of undersized cooling and Apple was willing to buy chips that wouldn't clock up to the normal/nominal values to save money because they had decided to underclock them anyway for power/heat.

[Powerbook]

Nobody else using ATICellerator? Other results?

Maybe I should still get the 1.67 GHz Powerbook, just to counter-check the possibilities of the video card in another machine...

PB.

[Super Mario]

Apple doesn't underclock the cards. What you are doing it manually cranking the speed from its low power state to high power state. Under Windows the clockspeeds change automatically. They may do so under Mac but we can't tell most of the time because we don't have decent graphics control panels for reading or adjusting the hardware settings.