After changing my GPU - it only runs at PCIe X1 speed (under load too)

[むつみ]

My specs are
Ryzen 3 2200g
Asus prime a320m-k
2*8 dual channel ram oced to 3000mhz
1 tb Seagate HDD
500 gb WD HDD
1 tb WD SSD
Currently= the GTX 1650 4gb I got for free from my friend (should be able to do PCIe x16 3.0, but max I get is pcie x1 3.0)
Old GPU = RX 460 (Ran at specified PCIe x8 3.0 just fine so)
Some 420w PSU (lol)


How do I check the PCIe speed stats? Using gpu-z

And no,under load it still says it's in the X1 slot

The Nvidia software also says I'm using the X1 slot. (And I do not,I use the topmost slot which is a x16 3.0 slot).


Any help? Thanks.

[DevaVictrix]

Are you getting that from the dyivers? It probably is running at x1 when you’re looking at them. If you can get a second monitor to display the driver settings when playing a game it might switch x16.

[むつみ]

Originally posted by DevaVictrix:

Are you getting that from the dyivers? It probably is running at x1 when you’re looking at them. If you can get a second monitor to display the driver settings it might switch x16.

I get it both from gpu-z and the Nvidia control panel, yes.

I don't have another monitor I can plug in right now sadly so....

Oh also,when running a game or benchmark,it still stays at x1

[DevaVictrix]

If you tab out of the game then it’s likely to flick back to x1. I suppose you could run the game windowed at a resolution smaller than the one your monitor is set at.

[_I_]

make sure the displays are plugged into the gpu not the mobo
when the gpu is idle it will use fewer lanes

use the gpuz render test
click the ? under the logo, and start test

[AbedsBrother]

Originally posted by Log Off (Now):

Currently= the GTX 1650 4gb I got for free from my friend (should be able to do PCIe x16 3.0, but max I get is pcie x1 3.0)
Old GPU = RX 460 (Ran at specified PCIe x8 3.0 just fine so)

How do I check the PCIe speed stats? Using gpu-z

And no,under load it still says it's in the X1 slot

The Nvidia software also says I'm using the X1 slot. (And I do not,I use the topmost slot which is a x16 3.0 slot).

The 1650 is probably damaged internally. Even dropping the gpu once (not saying you did, maybe your friend did) can damage solder joints and / or traces in circuit board. Sometimes display out fails, or the gpu starts crashing - or it performs at x1 slot speed, resulting in stutter when under heavy load.

Have seen this several times w/ used gpus that were sent through the mail with incorrect padding. Fixing the 1650 would probably cost more than the gpu is worth. Try what others in the thread have suggested, but be prepared to junk it if you can't find a solution. Hope you kept the RX 460.

[plat]

Yes, maybe there is something outright wrong with it. One is basically guessing here. You can test it with something like GeekBench or Passmark and then compare its results to others of the same model (1650)

https://www.passmark.com/
https://www.geekbench.com/

Can you borrow another gpu from somewhere?

[lsdninja]

You can also try removing it and reseating it, that's helped when I've had similar troubles in the past.

[DevaVictrix]

I’ve been having a play since I got home… link speed changes depending of performance level or generation selected in bios but link width is always at x16.

GPUs can certainly work ok even if all contacts aren’t connected so yeah, maybe try reseating it. I know they work ok because I’ve intentionally cut some off before now!

I've got to go now but I'm trying to work out if the slot is always/only x16 or if it can be changed in BIOS. I certainly can't change it with my z170 motherboard. Can you post a screeenshot of gpu-z? I'm sure I remember seeing it change once and it might have been when I used Windows/Gpu-z. Or I may be remembering the link speed change, which is what I've been looking at on my machine just now.

I’ve got a x1 riser and a x8 riser that I’ll try in a bit and see what’s reported when using those.

I got as far as reading these pages...
https://superuser.com/questions/1095073/where-does-pci-e-link-width-negotiation-occur

https://blog.adafruit.com/2024/01/29/a-pcie-deep-dive-the-link-training-and-status-state-machine-ltssm-raspberrypi-pcie/

https://scolton.blogspot.com/2024/01/pcie-deep-dive-part-4-ltssm.html

[plat]

Yes, no benchmark would be proper if the gpu wasn't seated properly in the first place.

[DevaVictrix]

You only need the first 18 contacts for it to work… it’s just, what does it report at?

The Linux nvidia drivers tells you max and current. If a x8 riser reports x8 then the link width can be changed by poor seating/contact.

It’s not the first 18… still. It looks the first 4 are power but substituted on the risers.

[むつみ]

Originally posted by plat:

Yes, no benchmark would be proper if the gpu wasn't seated properly in the first place.

heyy alright ill see

Originally posted by DevaVictrix:

You only need the first 18 contacts for it to work… it’s just, what does it report at?

The Linux nvidia drivers tells you max and current. If a x8 riser reports x8 then the link width can be changed by poor seating/contact.

It’s not the first 18… still. It looks the first 4 are power but substituted on the risers.

its reporting at x1 and im using windows rn

Originally posted by plat:

Yes, maybe there is something outright wrong with it. One is basically guessing here. You can test it with something like GeekBench or Passmark and then compare its results to others of the same model (1650)

https://www.passmark.com/
https://www.geekbench.com/

Can you borrow another gpu from somewhere?

i have my old 460 which reports 3.0 x8

Edit: put my old 460 in,and it's indeed reporting the correct rate, 3.0 x8 supported and running and x8

[_I_]

check bios settings, you can limit dedicated gpu lanes and pci-e version there too

might as well update bios too
then reset to defaults, disable the igpu, then enable xmp/docp and try again

[むつみ]

Originally posted by _I_:

check bios settings, you can limit dedicated gpu lanes and pci-e version there too

might as well update bios too
then reset to defaults, disable the igpu, then enable xmp/docp and try again

https://dlcdnets.asus.com/pub/ASUS/mb/SocketAM4/PRIME_A320M-K/E15417_PRIME_A320M-K_UM_V3_WEB.pdf?model=PRIME%20A320M-K Page 5 here says pcie x16 is "shared" and i have an APU so.... that might be my problem

[mtono]

i would try c-mos reset, and if it doesnt work afterwards, i cant really help.
byebye

[_I_]

Originally posted by gay.rocks:

Originally posted by _I_:

check bios settings, you can limit dedicated gpu lanes and pci-e version there too

might as well update bios too
then reset to defaults, disable the igpu, then enable xmp/docp and try again

https://dlcdnets.asus.com/pub/ASUS/mb/SocketAM4/PRIME_A320M-K/E15417_PRIME_A320M-K_UM_V3_WEB.pdf?model=PRIME%20A320M-K Page 5 here says pcie x16 is "shared" and i have an APU so.... that might be my problem

thats just the irq assignments, they are always shared on newer hardware

just update bios, drivers (from the asus site) and reset bios
then try again, if that doesnt fix, it may be an issue with the amd a board
that is a cheap board, 4+1+1, no vrm cooling, no heatsinks around cpu socket
~80w to cpu cores
im sure its fine with the 2200g, but a power hungry cpu will be limited by the board

but when the gpu is idle it doesnt need all of its lanes
alt+tab out of game can put it to idle
are you getting lower performance than expected with it?