Re: Adding an external monitor to a Rev c CRT iMac?

David Empson <dempson@[EMAIL PROTECTED]
> wrote:

> Jamie Kahn Genet <jamiekg@[EMAIL PROTECTED]
> wrote:
> 
> > Jolly Roger <jollyroger@[EMAIL PROTECTED]
> wrote:
> > 
> > > In article <1ii2p4r.pcnab11p166hpN%jamiekg@[EMAIL PROTECTED]
>,
> > >  jamiekg@[EMAIL PROTECTED]
 (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
sup****t?
> > > > ATI's site is useless.
> > > 
> > > You might have a look at http://everymac.com
or 
> > > http://apple.com/sup****t/specs
> > 
> > Nah, they only tell me what resolutions the iMac can sup****t with it's
> > built in monitor. In fact the Rage Pro sup****ts others as I can see
> > after hooking up the external display.
> > 
> > Strange that a list of resolutions sup****ted 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).

Yeah, I reckon I'll be happy with 1024x768 in millions on an LCD. Thanks
for that :-)

> There is also the question of whether it sup****ts the DDC mechanism for
> identifying the video modes sup****ted 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?

10 'recommended' choices plus another 10 not recommended. Most worked
despite a warning, a few didn't at all.

Regards,
 Jamie Kahn Genet
-- 
If you're not part of the solution, you're part of the precipitate.