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Rerout PCI Slot 2 to PCI Slot 1

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Joined
Jul 19, 2011
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141
Motherboard
Gigabyte Z170X-UD5 TH
CPU
i7-6700K
Graphics
Vega 64
Mac
  1. MacBook Air
Mobile Phone
  1. Android
Hi,

I asked myself is it possible to do a DSDT edit to rerout a GPU to make macOS think it is in PCI Slot 1.
The porblem ist that the RX460 I'm using only works when it is plugged into the first PCI Slot. But it is using the only x16 Slot on my board which I would have prefered for my GTX1070.

Just a basic question. So I want to put the RX460 in the second slot and maybe disable the GTX1070 which would be in the first Slot then completly in macOS.
 
I move 270x to slot 2, then hdmi sound fail
 
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