11 Replies Latest reply: Nov 16, 2012 7:39 AM by egdar
egdar Level 1 Level 1

Hey, best regards for all users. I have a question about changing graphics card. I'll be gratefull for all help.

I have PowerMac G5 Quad Late 2005 - M9592LL/A and OS X Leopard 10.5.8.

My card is GeForce 7800GTX 512MB and Quadro fx4500 model p348.

I'm looking for ROM for this cards for Mac G5. I want to change 6600 for 7800GTX 512MB or Quadro. Cards tested on PC are working.

Anyone can help ? I can't find any info about ROM for this cards.

Thanks all !


PowerMac, Mac OS X (10.5.8)
  • LordZedd Level 1 Level 1

    The ATI X1900 Mac Edition is more powerful than both of those cards.

  • egdar Level 1 Level 1

    Thanks for your response LordZedd, The ATI X1900 Mac Edition: 256MB/GPU clock 506MHz and memory clock is 1206MHz. The flashed 7800GTX: 512MB/GPU clock 530MHz and memory 1656MHz. I don't think that x1900 is more powerful than 7800gtx. I have two 26" monitors and my current card 6600 is too slow!

  • LordZedd Level 1 Level 1

    Please educate yourself using the following link

    http://en.wikipedia.org/wiki/Megahertz_myth

     

    <Edited by Host>

  • egdar Level 1 Level 1

    Ok leave megahertz, I don't have ati x1900 but I have 7800gtx and Quadro (model p348) cards and I'm looking rom for them. Can you help me?

  • japamac Level 7 Level 7

    The X1900 is slower than or equal to the 7800 GT in benchmarks:

    http://barefeats.com/quad15.html

     

    The 7800 GTX is faster than the 7800 GT in benchmarks:

    http://www.barefeats.com/mutant4.html

     

    The 7800 GTX has superior architecture, is capable of more triangles, more advanced shaders and outperforms other cards in most all applications.

     

    Send me an email.

  • LordZedd Level 1 Level 1

    The 7800 GTX has superior architecture, is capable of more triangles, more advanced shaders and outperforms other cards in most all applications.

    That is only your personal opinion. The X1900 is more powerful and efficient in every way than the 7800 series. Its only limitation is VRAM.

     

    <Edited By Host>

  • egdar Level 1 Level 1

    Hi LordZedd, of course X1900 it's very good card but it's hard to buy in my country. Much easier and cheaper to get PC 7800GTX or Quadro. Have you worked on X1900 and 7800GTX in Aperture, FCP or 3d modeling on two large screens? Japamac has good experience and he compared some graphics cards for G5.

  • japamac Level 7 Level 7

    Both the X1900 (R580) and the 7800 GTX (G70) are capable GPUs on advanced cards, both targeting and supporting Shader Model 3.0. 3D was a focal point in development for either card.

    Approaches for shader implementation are very different between the two cards.

    Arguements for either abound, but, 3D performance will be a defining factor to show shader prowess.

     

    Architecturally, the cards are very different, but, in the end, memory bandwidth, an important performance feature, is highest with the 7800 GTX; 54.4 GB/s vs. 38 GB/s for the Mac Edition Radeon.

     

    The next X19xx card, the X1950, almost doubled memory bandwidth over the X1900.

    I know guys that use flashed X1950 (512 MB) cards really like them.

     

    Support of DirectX 9 and Shader Model 3.0 make either card more than is necessary for OS X Core Image and OpenGL requirements.

     

    You bring up a very important point regarding application specific performance.

    Games are one form of benchmark, but not always indicative of real world performance.

     

    In Photoshop, CS4, the 7800 GTX is a fully supported card, whereas the X1900 (256 MB) card is not supported. The 512 MB version of the X1900 is supported, but doesn't help owners of the Mac Edition.

     

    There are pros and cons with either card, eventually driver and OpenGL support being the defining point.

    Early driver issues with the X1900 in OS X and a relatively short retail availability likely affect the lack of empirical data on the cards performance.

     

    The following, though comparing a X1900XT (not the little brother X1900GT which is the G5 version) with a Geforce 7800 GTX on platforms other than Mac, the comparisons do show pro oriented application performance.

    Though not necessarily applicable to OS X and PPC Macs, I thought it to be an interesting set of tests.

    http://ixbtlabs.com/articles2/cpu/nvidia-vs-ati-on-amd-and-intel.html

     

    Either card is great, either is way better than the 6600, and, as you point out, availability is an important factor.

  • LordZedd Level 1 Level 1

    In Photoshop, CS4, the 7800 GTX is a fully supported card, whereas the X1900 (256 MB) card is not supported.

    That is false information.

  • egdar Level 1 Level 1

    japamac, thanks for the important and interesting information about graphics cards for the PowerMac G5.

    I sent you an email.