Pwn* Posted March 22, 2006 Share Posted March 22, 2006 I have an imac G3 running at 663mhz stock i put 512 ram in and i am running osx 10.3.9 smoothly I was wondering if here was a bios or cmos i could access to change the video memory or maby even overclock it a bit ( currently i have the stock ATI card with 16mb of video memory and has a AGP bus) i know that ATI and nVidia use shared memory for most of there integrated card meaning you can use some of your ram as video memory and you can change this on most windows computers thanks, Link to comment Share on other sites More sharing options...
Pu7o Posted March 24, 2006 Share Posted March 24, 2006 Apple's equivalent of BIOS in PPC Macs is OpenFirmware, you can access it using CMD-O-F on boot. But I think you can't overclock your stuff. Link to comment Share on other sites More sharing options...
BCT Instructor Posted March 28, 2006 Share Posted March 28, 2006 The video RAM is dedicated memory, not shared. You cannot increase this amount. Overclocking is only possible by adding and removing resistors near or on the CPU. The best I ever managed on a G3 system was overclocking a 350MHz CPU to 400MHz. Anything above that kept locking up the system. This was done in a Blue & White G3 tower, where the CPU speed settings were controlled by a series of jumpers. Link to comment Share on other sites More sharing options...
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