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Hi, Martin, thanks for your reply. I noticed that so I tried to ① restart HWiNFO64 while running GPU-Z render test, but it still shows PCIe 1.1 ② check the sensors window. I didn't find PCIe version but the PCIe speed is 2.5 GT/s (speed of PCIe 1.1) So it still confused me.

Hi, I'm Xutao ZHENG from China. I found a weird thing (I'm not sure whether it is a bug). I have a external GPU connected to my thunderbolt dock. The GPU-Z says it is running on PCI-e 1.1 ×4 when idle and PCI-e 3.0 ×4 when rendering something (as shown below). However, the HWiNFO64...