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I wanted to test the integrated graphics on my i7 12700 K CPU, so I unplugged the HDMI from the GTX 970 card and plugged it in the motherboard HDMI port. To my surprise, the 970 card was being output through the motherboard HDMI port, and the intel integrated graphics was disabled. I ran benchmarks and found that the GTX 970 was getting better benchmark scores than it ever has. It also shows that it is using shared memory with my system.

Is this a new function of PCIe 5.0?

I read that someone moved their video card to the PCIe 4.0 slot and the integrated graphics was enabled after doing that.

Steven Brown
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1 Answers1

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I believe I found the answer. It is IOMMU that supports GPU passthough. The AI in my motherboard is disabling iGPU by default. I did plug the GTX 970 into the PCIe 3.0 slot and was still seeing GPU passthough. There are so many options in this bios that I missed finding the option to manually enable iGPU multi monitor, and with the AI disabling it, it defaults to IOMMU GPU passthough. So It has nothing to do with the version of PCIe

Steven Brown
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