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User profile for user: CW2k
CW2k Author
User level: Level 1
45 points

SLI works

Got my Mac Pro with 2x NVidia 7300 cards today. Used the PCI Express bandwidth config app in OS X to set slots 1 and 2 to 8x mode then I tested SLI in WinXP using the modified ForceWare 85.96 drivers (modified to work on any chipset). The drivers recognized the cards straight away and offered to enable SLI mode and it appears to work without any problems.

Did a quick test after installing XP and the drivers from bootcamp (no other tweaks yet)

3dmark2006 (free edition) results for one card:
3DMark Score 1642 3DMarks
SM 2.0 Score 595 Marks
SM 3.0 Score 551 Marks
cpu 3861

3dmark2006 (free edition) results with SLI enabled:
3DMark Score 3091 3DMarks
SM 2.0 Score 1162 Marks
SM 3.0 Score 1046 Marks
cpu 3861

Will do more tests when I get a chance.

Mac Mini G4, Mac OS X (10.4.7), Mac Pro

Posted on Aug 23, 2006 4:46 PM

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52 replies
User profile for user: azure8
azure8
User level: Level 1
10 points

Jan 15, 2007 2:59 PM in response to CW2k

If anyone is wondering, you can use 3 monitors with Windows on a Mac Pro. I selected the 8x + 8x slot configuration. Just install windows and the Mac drivers burned disc. After you install the second 7300GT, Windows reverts back to the low bit color mode, but then automatically recognizes the second graphics card. After that, you have to restart and fiddle with the display settings to get it to work.

Mac Pro Mac OS X (10.4.8)
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User profile for user: andiwand
andiwand
User level: Level 1
0 points

Mar 6, 2007 5:39 AM in response to CW2k

Hi.
I tried it too, but it would'nt enable SLI between the two 7300's.
I set up the following PCI combinations:
8x 8x 1x 8x
16 8x 1x 1x
8x 8x 4x 4x
I tested cards in slots 1+4 and 1+2.
I have a SLI connector (long version).
And the following versions of NVIDIA: 85.86, 91.31 and 93.71 , but nothing...

It says I have to remove all non SLI cards first.
Any ideas? Maybe the board isnt compatible or I need a special pached driver?

regards
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User profile for user: WhiteySnakey
WhiteySnakey
User level: Level 1
10 points

Apr 14, 2007 3:18 PM in response to CW2k

Got my Mac Pro with 2x NVidia 7300 cards today. Used
the PCI Express bandwidth config app in OS X to set
slots 1 and 2 to 8x mode then I tested SLI in WinXP
using the modified ForceWare 85.96 drivers (modified
to work on any chipset). The drivers recognized the
cards straight away and offered to enable SLI mode
and it appears to work without any problems.

Did a quick test after installing XP and the drivers
from bootcamp (no other tweaks yet)

3dmark2006 (free edition) results for one card:
3DMark Score 1642 3DMarks
SM 2.0 Score 595 Marks
SM 3.0 Score 551 Marks
cpu 3861

3dmark2006 (free edition) results with SLI enabled:
3DMark Score 3091 3DMarks
SM 2.0 Score 1162 Marks
SM 3.0 Score 1046 Marks
cpu 3861

Will do more tests when I get a chance.


What modified drivers did you use? I tried NGO but I got no luck with enabling SLI.

I have the two cards setup in Slot 1 and 2 @ 8x connected with ASUS SLI Bridge and both are detected in Windows XP.

Any help would be really appreciated.

Mac OS X (10.4.9) Mac Pro / 2.0GHz / 1GB Ram / 2x 7300GT
Reply

SLI works

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