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Main -> PCI Devices -> Vendor 1022 -> Device 1022:1453

Name: Family 17h (Models 00h-0fh) PCIe GPP Bridge

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Name: Family 17h (Models 00h-0fh) PCIe GPP Bridge

This is a port on one of the 16-lane PCIe GPP controllers.

On the Ryzen 7 1700 with 2 GPUs and a M.2 NVMe drive attached, there are 2 x 8-lane bridges (00:03.1 -> first GPU and 00:03.2 -> second GPU) and 2 x 4-lane bridges (00:01.1 -> NVMe and 00:01.3 -> FCH).

Note that it would appear that all ports on a controller operate at the speed of the slowest port - i.e. using a 2.5GT/s GPU on one of the x8 ports will slow the other port to 2.5GT/s, even if an 8GT/s GPU is on that port.

klightspeed

2017-10-28 18:08:51

Name: Zeppelin PCIe GPP Bridge

T4CFantasy

2019-02-02 02:25:35

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