2x nVidia Geforce 460GTX (SLI) could it work?

[esneik]

I have 2 460GTX and i'm wondering if Chimera would recognize both of them in SLI configuraton.
Anyway if the OS X doesn't reconize both, i want them for gaming (Windows 7) so, could i use them in SLI for Windows without interfering with Chimera?

Thank you.

 

[xucrute]

Yes, it is possible. You have to use a DSDT edit or use EFI device-properties (much easier).

For EFI device-properties, you have to plug each card individually, on their respective slots, and run the attached gfxutil for each card:

./gfxutil -f display

It should output something like: DevicePath = PciRoot(0x0)/Pci(0x1,0x0)/Pci(0x0,0x0)

On my config, it generates:

For PEG1: DevicePath = PciRoot(0x0)/Pci(0x1,0x0)/Pci(0x0,0x0)
For PEG2: DevicePath = PciRoot(0x0)/Pci(0x1,0x1)/Pci(0x0,0x0)

Generate a proper NVCAP with NVCAP Maker (from the extracted bios of your primary card), then, edit my attached config (gtx460_sli.plist) and change both addresses, from gfxutil output, 1st card NVCAP and change memory config (VRAM,totalsize) accordingly (mine is set to 1024 MB).

After making the necessary edits, run:

./gfxutil -i xml -o hex gtx460_sli.plist gtx460_sli.hex

Then, add the string from gtx460_sli.hex to /Extra/org.chameleon.Boot.plist as:

        <key>device-properties</key>
        <string>LONG_STRING_FROM_gtx460_sli.hex</string>

On my config, the 2nd card is disabled, as I don't use it for anything on MacOS. If you want both detected, copy the config from the 1st card (on plist) over to 2nd card, and change 2nd card device_type to NVDA,Child. You should also set the memory and extract its NVCAP.

Head over to viewtopic.php?f=15&t=20367 to learn how to edit AGPM for performance (and to prevent crashes!).

Have fun.

 

[esneik]

Thank you!

 

[hackeron]

Could you not use the other card with something like Final Cut Pro X? - I believe it uses GPU quite heavily.