View Full Version : Powermac G5 video card upgrade

Sep 25, 2011, 04:57 PM
I have a Powermac G5 dual 2.0 GHz

If I wanted to upgrade the video card, what is the highest performace (best) video card I could upgrade to that is compatible with this system, and ALSO has the ADC port for my monitor? Could anyone throw out the names some top of the line models?

What about if I had an ADC/DVI connector, then what are the best cards that are compatible with the system assuming money is not an object (it is but im just curious what the max potential of this system is)


Sep 25, 2011, 05:10 PM
Best video cards that still has ADC would be the Mac ATI x800 or the not so powerful Mac Nvidia Geforce 5200.

Without the ADC, the Nvidia Geforce 7800 (flashed PC card) but you could get the DVI to ADC adapter to power your monitor.

Sep 25, 2011, 05:25 PM
Here are your options...

G5 Dual 2.0 GHz AGP can run these cards...

Flashed Nvidia 7800

Authentic Mac ATI x800

Flashed ATI Fire GL-2

G5 Dual Core 2.0 GHz PCI-e can run these cards...

Flashed Quadro FX4500

Flashed Nvidia 7800 GTX

Flashed Nvidia 7800 GT

Authentic Mac ATI x1900

Sep 25, 2011, 05:35 PM
great thanks for the info

Sep 25, 2011, 05:43 PM
As for the ADC monitor and connections, if you had an ADC and you wanted to hook up a second DVI monitor, you will need one of these...

ADC to DVI Connector

Or connect an ADC monitor to an existing DVI connection, you will need a DVI to ADC conversion box

Jethryn Freyman
Sep 25, 2011, 07:41 PM
What do you want it for? If it's games, a lot of games are CPU limited on slower clocked G5's. I know because I have a dual 1.8GHz.

Sep 26, 2011, 12:12 PM
I don't know really, I probably won't upgrade it I was just curious. My boss gave me the system for free with a 23" cinema HD display monitor. I was entertaining making the system as decked out as possible. I just got Leopard installed and I'm going to max out the RAM in the near future.

Question: Lets say I'm watching a youtube video on this thing and click fullscreen. Now the video pixel-wise is the same quality but the playback is choppy and intermittent. Is this issue due to low memory, the video card, the speed of the internet connection, the processor, or some combination of all of the above?


Sep 26, 2011, 02:36 PM
What are the specs of the machine? IE ram, video card, info like that.

With mine, i have 3.5 gb ram, dual 2.5 ghz cpu's, and an ati 9600 xt video card. I can run fullscreen 360p videos, but once i go to 480p it gets a little choppy. 720p or anything higher is a no go.

Sep 26, 2011, 03:23 PM
Powermac G5 dual 2.0; 1 gig RAM, ATI RADEON 9600 Pro with 64MB DDR SDRAM
running latest version of leopard

Sep 28, 2011, 06:51 PM
you may want to add more ram since the bare minimum to run anything on a G5 is 1 gig of ram.

Oct 12, 2011, 06:31 PM
hi reddrag0n.

I've a late G5 Dual 2.0 (PCI-e) i still have the 6600LE and I'd change it with the x1900 but i see you specified authentic mac.. so do you mean there's no flashed version ? and I've two cinema display.. (I'd rotate them that's why i should get the ati .. no ?!)

Oct 13, 2011, 05:51 AM
gold-dragon: Yes, that's correct. There is no rom available for flashing a PC x1900 to a mac. Your best bet would be to buy an authentic x1900 or go for a flashed 7800 256 MB or more powerful 512 MB version.

Barefeats have a comparison of the ATI and Nvidia cards. (http://www.barefeats.com/quad15.html)

Now compare the numbers of the Nvidia 7800 GT 256 MB vs the Nvidia 7800 GTX 512 MB (http://www.barefeats.com/mutant4.html)

Oct 19, 2011, 09:41 AM
Thanks so much!