Want to upgrade my Power Mac graphics card

[Karlos]

256MB cards are flashable (mine's a Sapphire 256MB Radeon 9200), but like I mentioned in the last post MorphOS and OSX only use the first 128MB.

Same story in OS4.1. Only half of my 256MB 9200's RAM is recognised.

[Colani1200]

256MB cards are flashable (mine's a Sapphire 256MB Radeon 9200), but like I mentioned in the last post MorphOS and OSX only use the first 128MB.

This is rather due to the ROM itself.

[peroxidechicken]

http://cgi.ebay.com.au/New-Mac-Powermac-G5-G4-Radeon-9200-128MB-AGP-Video-Card-/180556627762?pt=AU_Computers_Apple_Desktops&hash=item2a0a037f32

I think I've seen more than one of these sorts of listings while browsing ppc powermacs on ebay.  I know next to nothing about powermacs so I'm not sure if this particular card would work in your system...

[Iggy]

This is rather due to the ROM itself.

In the case of OSX that is the problem, but MorphOS only uses the first 128MB even if you're running on a Pegasos with a PC 9200.

One of the developers mentioned that unlike the 256MB  9600, the 9200 treats it memory like two distinct 128MB blocks.

While the MorphOS driver for the 9600 will use all 256MB (if present), the 9200-9250 driver won't.