Previous 1 2 3 Next 37 Replies Latest reply: Jan 14, 2008 10:03 AM by IndustrialEcho Go to original post
  • bennysonic Level 1 (0 points)
    Hi everyone.

    Just to add another angle to the debate. I have a late 2005 2.0 Dual PPC Mac (Dual-core 2GHz PowerPC G5 - M9590LL/A) which came with the standard NVIDIA GeForce 6600 LE with 128MB of GDDR. Which, don't get me wrong is fine for most things but having maxed out on the RAM and large image files slowing down, I started to look around for a new card.

    After taking much advice (apparantly there were a lot of fine tuning points done to the MAC around this time which 'affected the graphics board fittings')I settled on the ATi Radeon 1900X for MAC. All the specs were good for it and I was confident for the price I was getting a good board (sub £200 inc)

    Anyway it fitted fine but I got an power error message as soon as I booted up. It needed to pull 200 watts from the PS and the PS only supports up to 150 watts.

    There is an external power lead and connection that came with it designed to connect to the motherboard (standard 6 pin) and before I take the card back and start the process again, I just thought I would ask if any of you tecchie types out there knew where I could connect the external power lead either via the motherboard or another place.

    Secondly any recommendations fo4 this machine for a compatible card under 150 watts if I should have to send the 1900X back? The X800XT in this thread sounds good - anyone know what power it pulls from the PS?

    All feedback greatly appreciated. I will have to be on a 'graphics go-slow' until I can get a fix for this.

    Thanks again.

  • tobyross Level 1 (0 points)
    Computer-Mac G5 dual 2GHz
    Monitor - Apple 23" Cinema HD Display-Z
    Out of the blue I get bar codes all over my monitor, my repair guy informed me the ATI Radeon 9800 needs replacing, but Apple is out of stock...don't want to deal with E Bay there another card with the same memory( 250 MGS) or higher i could get?
  • Sheree Ebanks Level 1 (85 points)
    Help. I have have a late 2003 PMG5 1.8 GHz which I just upgraded the memory (to 4GB, but intend to take it up to 6GB shortly) and added more disk space (2 320GB Hard Drives). Now I would like to upgrade the graphics card. I was told that I must stay away from the ATI cards.....but after reading a lot of comments on this topic, no one has mentioned the NVIDIA. I was thinking of getting the 3 x NVIDIA GeForce 7300 GT 256MB is this compatible with the older PPC 1.8GHz machine? Any thoughts on installing and running this one? I do a lot of videos and photography.
    Thanks for you help.
  • CraigDay Level 1 (10 points)
    The NVIDIA GeForce 7300 GT requires a PCI-Express slot. Your computer, like mine, uses PCI-X, which is incompatible with the latest generation PCI Express graphics cards. I'm really hoping AMD (ATI) gets their quality control problem figured out. Anybody out there receiving quality AGP X800 XT cards?? I'm still holding off on placing an order.
  • Allan Marcus @ LANL Level 2 (425 points)
    I ran the tests with my 6800 ultra, G5 dual 2.7, 8GB RAM, OS 10.5.1:

    CPU Benchmark
    Rendering 1CPU --> 2006
    Rendering 2CPU --> 3636
    Multiprocessor Speedup --> 1.81x

    OpenGL Benchmark --> 2281

    Message was edited by: Allan Marcus @ LANL
  • Fabian Ramirez Level 1 (105 points)

    I also have a dual-core 2.0 G5 and am awaiting my X1900 to be delivered. As soon as I get it, and provided that no one else provides you with the answer, I'll let you know where you're supposed to hook up the power connector to.

    I know it gets connected to the motherboard, but I don't know where, yet.
  • Fabian Ramirez Level 1 (105 points)
    tobyross and Sheree,

    Assuming that you're got a G5 with a 8x AGP slot, you're kinda limited on your selections. According to Mactracker, the AGP G5s came the following AGP video cards:

    NVIDIA GeForceFX 5200 Ultra, GeForce 6800 Ultra DDL, GeForce 6800 GT DDL, ATI Radeon 9600 Pro/XT, 9650, 9800 Pro/XT, or X850 XT.

    Or you can get a flashed PC counterparts of the above listed cards or even a flashed GeForce 7800 GS card off eBay.

    Hope this helps.
  • IndustrialEcho Level 1 (0 points)
    Fabian Ramirez wrote:

    Or you can get a flashed PC counterparts of the above listed cards or even a flashed GeForce 7800 GS card off eBay.

    Hope this helps.

    I would stay far away from a Flashed Radeon 9800 Pro. It would not work in my G5 2x2!

    I have just gone through **** trying to figure out my graphics card problem and saw this post from someone on MacInTouch who had the exact problem I had. I thought I would share it in case anyone else is having this problem:

    "Jan. 14, 2008
    Video Problems

    MacInTouch Reader
    I'm submitting this with the notion that perhaps it may help someone out. I'm an owner of an original generation PMG5 2x2.0GHz machine. About six months back I started having problems with random freezes of the machine. I would come home and the machine would not wake the displays or if the displays did wake the screensaver that was showing would be frozen. Occasionally it was possible to ssh in to the machine in this state and occasionally it was not.
    Poking around in the system logs at some points reported Radeon GPU hangs from the Radeon driver. After lots of hangs and reboots I eventually managed to catch the culprit in action (or lack thereof.) The Radeon 9800 card's fan was occasionally -not- spinning. Needless to say this is an unhealthy condition for this card to be in. I believe this was likely caused by years of dust flowing through the machine (it's just impossible to keep dust out of these things.)
    After discovering this (and a failed attempt to procure an ATI X800 replacement with an ADC connector) I decided to replace the fan myself. I used a Zalman GPU fan replacement. In doing this replacement, I found that the original thermal compound between the GPU and fan block had been effective baked to a crisp. After scraping and cleaning this off I was able to apply a new thermal compound and put the new fan assembly in place with little fuss. The only tricky part was connecting it to power. Uncertain if the board's fan power output would work for this fan I instead used a Molex splitter I had laying around to hook it up to the optical drive's power connector.
    Months of stability have ensued since. People having system troubles with these older models should check that the fans on their graphics cards are still working solidly. Admittedly this could be tough to check if they're simply spinning slowly instead or the thermal compound has already been baked out of existence, but it's worth checking if it happens to be the issue."

    I had a shop remove the fried thermal paste and reseat the heat sink and my G5 works just fine now.
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