RTX 4090 running @ PCIE x1 (1.0 - 4.0)

[LylatDrift]

Hi there,

 

Recently put a 4090 into my PC and every time I start the PC, I'll get horribly low FPS (15-20) until I restart the PC.

I downloaded GPU-Z and saw Bus Interface as: "PCIE x16 4.0 @ x1 4.0".

It goes between x1 1.0 and 4.0.

I am somewhat familiar with building PCs, so I may not fully understand what I'm looking at.

 

PC:

- GIGABYTE AORUS X670E PRO X

- GIGABYTE AERO RTX 4090 OC

- XPG LANCER 64GB (2x32GB) 6000 CL30-40-40-40

- Samsung 990 Pro x2

- WD SN850X

- be quiet! Straight Power 12 80+ Platinum 1200W PCIE 5.0

- NZXT Elite 360 RGB AIO

 

Versions:

BIOS = F22

Windows: 10.0.22631 Build 22631

NVIDIA: GeForce Game Ready Driver 552.12

 

Programs Running:

- Lian Li Connect 3

- NZXT CAM

- RGB Fusion

- Steelseries GG

- Steam

- GeForce Experience

 

Notes:

- There are 2 Samsung 990 Pro's sitting in 'integrated CPU lanes'. GIGABYTE labels them as M2A_CPU & M2B_CPU.

- Disabled Fast Boot

- DDU Uninstall/Reinstall

- Updated BIOS / Windows / Nvidia drivers

- Disabled Memory Context Restore

- Disabled Secure Boot

- Turned off GSYNC on Monitor

- Turned off EXPO

- Clean Windows Install

- Reseated GPU & checked 12VHPWR cable connection

- Plugged PC into dedicated wall socket

 

[Blasty Blosty]

Have you tried resetting the BIOS to default settings?

[Blasty Blosty]

Nevermind sorry, I see you have

[TatamiMatt]

Try playing a game and checking, Nvidia gpus will go into a sort of power saving state and only use what they need, while theyre physically plugged into a x16 lane, they might only try to use 1 of the lanes if that is all they need, when they need to ramp up they will use more of the lanes as necessary

[DoctorNick]

1 hour ago, LylatDrift said:

Hi there,

 

Recently put a 4090 into my PC and every time I start the PC, I'll get horribly low FPS (15-20) until I restart the PC.

I downloaded GPU-Z and saw Bus Interface as: "PCIE x16 4.0 @ x1 4.0".

It goes between x1 1.0 and 4.0.

I am somewhat familiar with building PCs, so I may not fully understand what I'm looking at.

 

PC:

- GIGABYTE AORUS X670E PRO X

- GIGABYTE AERO RTX 4090 OC

- XPG LANCER 64GB (2x32GB) 6000 CL30-40-40-40

- Samsung 990 Pro x2

- WD SN850X

- be quiet! Straight Power 12 80+ Platinum 1200W PCIE 5.0

- NZXT Elite 360 RGB AIO

 

Versions:

BIOS = F22

Windows: 10.0.22631 Build 22631

NVIDIA: GeForce Game Ready Driver 552.12

 

Programs Running:

- Lian Li Connect 3

- NZXT CAM

- RGB Fusion

- Steelseries GG

- Steam

- GeForce Experience

 

Notes:

- There are 2 Samsung 990 Pro's sitting in 'integrated CPU lanes'. GIGABYTE labels them as M2A_CPU & M2B_CPU.

- Disabled Fast Boot

- DDU Uninstall/Reinstall

- Updated BIOS / Windows / Nvidia drivers

- Disabled Memory Context Restore

- Disabled Secure Boot

- Turned off GSYNC on Monitor

- Turned off EXPO

- Clean Windows Install

- Reseated GPU & checked 12VHPWR cable connection

- Plugged PC into dedicated wall socket

 

 

 

 

 

 

Its interesting how bad this is documented on the AM5 platform. You might be able to change 16x slot to PCI-E 4.0 in BIOS. Also M2A/B to 4.0. Alternatively use M2C, M2D from chipset 

[DoctorNick]

Just now, TatamiMatt said:

Try playing a game and checking, Nvidia gpus will go into a sort of power saving state and only use what they need, while theyre physically plugged into a x16 lane, they might only try to use 1 of the lanes if that is all they need, when they need to ramp up they will use more of the lanes as necessary

Thats true as well. But he says it goes between 1.0 x1 and 4.0 x1

[LylatDrift]

5 minutes ago, DoctorNick said:

Its interesting how bad this is documented on the AM5 platform. You might be able to change 16x slot to PCI-E 4.0 in BIOS. Also M2A/B to 4.0. Alternatively use M2C, M2D from chipset 

I should have mentioned I’ve forced the PCIE x16 lane to run at Gen5 and it did nothing.

 

Swapping the SSDs to other M.2 ports might be the next move. A friend has also recommended downgrading the BIOS to 1.0.0.7c.

[LylatDrift]

9 minutes ago, TatamiMatt said:

Try playing a game and checking, Nvidia gpus will go into a sort of power saving state and only use what they need, while theyre physically plugged into a x16 lane, they might only try to use 1 of the lanes if that is all they need, when they need to ramp up they will use more of the lanes as necessary

Same deal.

Also, for example, I know when it’s happening if I run Destiny 2.

 

During a non-combat social space, frames are close to 500FPS and 200 during combat.

 

When the GPU is acting up, I’ll get 150-200, with constant stuttering, and then down to 30 during combat.

 

I turned off GeForce Overlay as well as it was the issue back when I played Control, and would rip my FPS down to 6FPS. Didn’t do the trick this time.

[DoctorNick]

25 minutes ago, LylatDrift said:

I should have mentioned I’ve forced the PCIE x16 lane to run at Gen5 and it did nothing.

 

Swapping the SSDs to other M.2 ports might be the next move. A friend has also recommended downgrading the BIOS to 1.0.0.7c.

PCI-E X16 and M2A, B should run on same lane. Changing to PCi-E 4.0 might help. Idk it you can change if per M.2 slot as well as they also supports PCI-E 5.0. Idk really, because I run AM4, but searching online I see a lot of confusion

[TryRestart]

 

Maybe this got some meaning?

https://www.gigabyte.com/Motherboard/X670E-AORUS-PRO-X/sp#sp

[LylatDrift]

21 minutes ago, DoctorNick said:

PCI-E X16 and M2A, B should run on same lane. Changing to PCi-E 4.0 might help. Idk it you can change if per M.2 slot as well as they also supports PCI-E 5.0. Idk really, because I run AM4, but searching online I see a lot of confusion

I've downgraded my BIOS to F3, AGESA 1.0.0.7c.

So far so good, GPU-Z is reading x16 4.0.

I'll see tomorrow as the problem is fixed after a restart which I just did to flash the BIOS, but it comes back after the PC is off for a while.

 

If this doesn't work, I'll swap the M.2 drives to other slots and report back.

Thank you everyone so far! 

[DoctorNick]

45 minutes ago, LylatDrift said:

I've downgraded my BIOS to F3, AGESA 1.0.0.7c.

So far so good, GPU-Z is reading x16 4.0.

I'll see tomorrow as the problem is fixed after a restart which I just did to flash the BIOS, but it comes back after the PC is off for a while.

 

If this doesn't work, I'll swap the M.2 drives to other slots and report back.

Thank you everyone so far! 

Nice thank you for sharing! Should work now then. Makes sense that it could be an error with agesa or something, because manual states that M2A, M2B should work with GPU. Also didn't make any sense to me why It would run x1 and not x4/8

[LylatDrift]

Morning!

I turned on the PC today and ran GPU-Z.

 

PCIE x16 @ x16 4.0

 

This is very promising.

I’ll run another test by turning it off and turning it on after work in 10 hours and jump into the same game I used to reference.

[LylatDrift]

22 hours ago, DoctorNick said:

Nice thank you for sharing! Should work now then. Makes sense that it could be an error with agesa or something, because manual states that M2A, M2B should work with GPU. Also didn't make any sense to me why It would run x1 and not x4/8

Evening!

 

Turned on PC and it's running PCIE x16 @ 4.0.

This might've been the fix.

I'm confident in saying that the recent AGESA updates seem to have caused some issue with the RTX 4090.

If anyone is reading this with the same issue, revert your BIOS AGESA to 1.0.0.7c.