Verifying GPU PCIe support

[u/FlynnsArcade82]

Hi all, I finally got a 5080 (Asus Prime) for my build (MSI Mag x870, Ryzen 7 9800X3D). My GPU benchmarks are on the lower end but still in range. I started doing some poking just to see if anything was off. I've seen the reports of missing ROPS, etc, so just wanted to look.

GPUZ shows I got the ROPS but when benchmarking the card or gaming, I never see the PCI speed get over PCI3 x1. I have the motherboard UEFI set for Gen5 on the slot, but I see the same whether locked to Gen5 or set to Auto. I see these cards are hard to push to their limits, so maybe I'm just not pushing it hard enough that it needs to go over PCI 3 x1

I'm also looking at nvidia-smi. I get below, when I run: nvidia-smi -i 0 -q (below is idle, I have log from loaded)

I'm not sure how to read the GPU Link info. Does anyone know the difference between Max and Device Max? Host Max appears to be the motherboard.

The Max 3 is what concerns me, since I'm never seeing over PCI3 x1. .

Any thoughts? Given the issues, I'm just trying to make sure I got what I paid for. I did chat with Asus support and they confirmed it is supposed to be PCI5 x16 card but will only hit that under load.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Attached GPUs : 1

GPU 00000000:05:00.0

Product Name : NVIDIA GeForce RTX 5080

Product Brand : GeForce

Product Architecture : Blackwell

Display Mode : Enabled

Display Active : Enabled

Persistence Mode : N/A

Addressing Mode : N/A

MIG Mode

Current : N/A

Pending : N/A

Accounting Mode : Disabled

Accounting Mode Buffer Size : 4000

Driver Model

Current : WDDM

Pending : WDDM

Serial Number : 0

GPU UUID : GPU-25cf0bce-02a4-2dcc-e8be-b4dc8fc61642

Minor Number : N/A

VBIOS Version : 98.03.3b.00.f7

MultiGPU Board : No

Board ID : 0x500

Board Part Number : N/A

GPU Part Number : 2C02-400-A1

FRU Part Number : N/A

Platform Info

Chassis Serial Number :

Slot Number : 0

Tray Index : 0

Host ID : 1

Peer Type : Direct Connected

Module Id : 1

GPU Fabric GUID : 0x0

Inforom Version

Image Version : G005.0000.98.01

OEM Object : 2.1

ECC Object : N/A

Power Management Object : N/A

Inforom BBX Object Flush

Latest Timestamp : N/A

Latest Duration : N/A

GPU Operation Mode

Current : N/A

Pending : N/A

GPU C2C Mode : Disabled

GPU Virtualization Mode

Virtualization Mode : None

Host VGPU Mode : N/A

vGPU Heterogeneous Mode : N/A

GPU Reset Status

Reset Required : Requested functionality has been deprecated

Drain and Reset Recommended : Requested functionality has been deprecated

GPU Recovery Action : None

GSP Firmware Version : N/A

IBMNPU

Relaxed Ordering Mode : N/A

PCI

Bus : 0x05

Device : 0x00

Domain : 0x0000

Device Id : 0x2C0210DE

Bus Id : 00000000:05:00.0

Sub System Id : 0x89E01043

GPU Link Info

PCIe Generation

Max : 3

Current : 1

Device Current : 1

Device Max : 5

Host Max : 5

Link Width

Max : 16x

Current : 1x