For what it's worth, I recently installed a 256 MB Radeon 9600 (AGP) in my MDD, which has two hard drives (both on the ATA bus) and have had no problems whatsoever. System Profiler reports Core Image: Hardware Accelerated and Quartz Extreme: Supported.

Michael McMurtrey
Carrollton, TX

On Dec 12, 2012, at 5:48 AM, [email protected] wrote:

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MDD G4 odd start/restart behavior - new video card [5 Updates]
 MDD G4 odd start/restart behavior - new video card
faithie999 <[email protected]> Dec 11 03:55AM -0800

i was going to suggest the same thing, if only for a last troubleshooting
step.

if you have either a spare PC power supply, or a PC that you can "borrow" the power supply from temporarily, you could try powering the video card from the separate power supply. assuming the borrowed PS doesn't have a switch, google for the pinout for the 20 (or 24) pin connector, and see
which pins you need to short together to turn the PS on.

ken

"[email protected]" <[email protected]> Dec 11 08:41AM -0800

On Monday, December 10, 2012 10:14:08 PM UTC-6, Valter Viglietti wrote:
> had the 400W PS, subsequent versions (FW 800 and 2003) had the 360W.
> Perhaps the design became more power-efficient; I don't know if the two PS
> are interchangeable.

Are we sure these are different versions and not just another example of what happened with, IIRC, the 9500/9600? In that older case, some times the input wattage of the power supply was listed. Other times the output wattage of the power supply was listed. Of course, the input wattage was
considerable higher back then. This sent a number of devoted modders
scurrying around hunting for the "higher power" supply, even though both numbers referred to exactly the same supply; the two numbers were simply
describing different qualities of the same object.

I notice that 360 is exactly 10% less than 400. 90% efficiency is
perhaps a bit high, but about in the ball park of what one would expect
from a good efficient supply, so I find it believable, although not
certain, that 400W is the input wattage of the MDD supplies and 360W is the
output wattage of the MDD supplies.

Jeff Walther

frrob <[email protected]> Dec 11 09:36AM -0800

Jeff:

From photos of several of these PSUs (both 360 and 400 watt versions) for sale on eBay, it seems pretty clear to me that these figures are output
wattage. From my rough calculations based on input figures on the same
PSUs, it would seem that the input wattage is between 700-800 watts.


Rob J.




gifutiger <[email protected]> Dec 11 04:57PM -0800

Greetings,

If you need drivers you should be able to get them on ATI web page.
When I was using my G4 AGP Graphic 400 I need to install the drivers (I think there was2) before everything worked Okay. Well my problem was, if the system went to sleep upon wake up the screen was scrambled, and the only way out was, Shutdown and restart.
But with the drivers installed sleep & wake up was good.

If you can't find the drivers let me know, I'm sure that I still have them.

Cheers

Harry

frrob <[email protected]> Dec 11 12:13PM -0800

Greetings all!

On a related, but slightly different note:

What about using an ADC/DVI version of the 9600 (either the Pro or XT)
instead of the 9800? I have seen a number of them for sale on eBay. Since they are ADC, they might play better with the MDD. Furthermore, they don't
appear to have the Molex secondary power connector, so that would be
another problem avoided. Do they not have the molex because they draw extra power through the ADC plug on the motherboard, or do they just draw less
power?

I imagine I'd have to tape pins 3 & 11, but that's not a big deal.

With the 9600 XT or Pro, I'd still have hardware acceleration of Core Image
and Quartz Extreme.

Any potential pitfalls, or other thoughts on that?


Thanks,

Rob J.

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