> Jolly Roger <jollyroger@pobox.com> wrote: > > > In article <1ii2p4r.pcnab11p166hpN%jamiekg@wizardling.geek.nz>, > > jamiekg@wizardling.geek.nz (Jamie Kahn Genet) wrote: > > > > > Haha! I found an old Apple Multiple Scan 15av out back and it works > > > GREAT! :-) Now I just need to find a decent LCD screen that will work > > > with the iMac's Rage Pro. What resolutions can the Rage Pro support? > > > ATI's site is useless. > > > > You might have a look at http://everymac.com or > > http://apple.com/support/specs > > Nah, they only tell me what resolutions the iMac can support with it's > built in monitor. In fact the Rage Pro supports others as I can see > after hooking up the external display. > > Strange that a list of resolutions supported by the Rage Pro should be > so hard to find. Cheers anyway :-)
MacTracker doesn't know either.
1024x768 at 75 Hz will work fine.
A little back of the envelope calculation suggests that it can't go much larger than that with only 6 MB of VRAM. It would need 3 MB of VRAM to do millions of colours at 1024x768. 4.8 MB gets you to 1280x960, but it wouldn't be able to manage 1680x1050 (typical 20" widescreen) without dropping to thousands of colours.
The Rage Pro might reach its limit at a lower resolution, if it can't handle the bandwidth. It can do 1024x768 at 75 Hz (58.98 Mpix/s), but might not be able to keep up with 1280x960 at 60 Hz (73.73 Mpix/s).
There is also the question of whether it supports the DDC mechanism for identifying the video modes supported by a connected monitor, or whether it is hardwired to the capabilities of the internal display. What options did it offer with the Multiscan 15AV?
