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2 Graphics Cards - 1 PCI-E and 1 PCI

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Joined
Nov 11, 2010
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18
Motherboard
Gigabyte X58A-UD3R
CPU
Core i7-950
Graphics
EVGA GTX 670 4GB
Mac
  1. MacBook Pro
Classic Mac
Mobile Phone
  1. iOS
After discovering that I can use my work software in OS X, I decided to hackintosh my work machine. It's working fine except for one small problem, I can't get 2 graphics cards working on it. The machine is a Gigabyte P35-DS3L. I have a 7800 GTX in the PCI-E slot and an 8400GS in a PCI slot. If they are both in, only the 7800 works. However, if I remove the 7800, I can use the 8400. I tried following this guide but I ended up getting the same PCI root for each device. Is this because one is PCI-E and one is PCI? Am I being a total noob and missing a step? Is multiple graphics cards using 2 different interfaces even possible in a hack?
 
Joined
Mar 17, 2011
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I have the same problem with two identical PCI Roots.. But mine are two PCI-E's. Could't find any solution yet..
Slot 1: DevicePath = PciRoot(0x0)/Pci(0x3,0x0)/Pci(0x0,0x0)/Pci(0x0,0x0)/Pci(0x0,0x0)
Slot 2: DevicePath = PciRoot(0x0)/Pci(0x3,0x0)/Pci(0x0,0x0)/Pci(0x0,0x0)/Pci(0x0,0x0)

Graphic cards are two Zotac GT240 1024Mb.
May be some DSDT editing should help??
 
Joined
Aug 8, 2011
Messages
39
Motherboard
OSX CATALINA 15.3
CPU
CORE i9 9900K LGA 1151
Graphics
RX 5600 TX
Mac
  1. iMac
Mobile Phone
  1. Android
Use GfxUtil to find the root "Gfxutil" -f display
You need to put one card in correct slot and do this, and next take out this card and put the other one.Check to put the card in the pci express slot do u want to use it, the root is the direction of your slot
GOOD LUCK
 
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