GPU being stuck on PCIE x4 4.0

[windening]

I just bought an rtx 4080 super and when i tested it it only shows pcie x4 4.0. even under stress test the bandwidth refuses to expand and stays at 4.0. I have cleaned the contacts of both the PCIE slot and GPU and it is still at the same bandwidth. help me please:( 

[RONOTHAN##]

What motherboard, CPU, and PCIe slot on said motherboard are you using?

[Eigenvektor]

54 minutes ago, windening said:

even under stress test the bandwidth refuses to expand and stays at 4.0.

The card only supports up to PCIe 4.0, so that part is normal. Having only x4 lanes instead of x16 means the slot it's in likely is limited to x4.

[windening]

2 hours ago, RONOTHAN## said:

What motherboard, CPU, and PCIe slot on said motherboard are you using?

Asrock b650 pro rs, Ryzen 7 7700. Im using the top slot of the pcie

[windening]

1 hour ago, Eigenvektor said:

The card only supports up to PCIe 4.0, so that part is normal. Having only x4 lanes instead of x16 means the slot it's in likely is limited to x4.

Yeah but on asrock spec sheet the slot is rated for x16 which is weird

[windening]

also maybe not note worthy but the pcie slot when i install my gpu it doesn't "click" but still secured and no pin exposed. Could it be a pcie port fault here? or potentially the lock?

[Eigenvektor]

12 minutes ago, windening said:

Yeah but on asrock spec sheet the slot is rated for x16 which is weird

It has two physical x16 slots, one of which is wired for x16, while the other is wired for x4. So make sure you've picked the right one.

 

Otherwise, might be damaged traces on the motherboard, or maybe the CPU isn't making proper contact.

[windening]

1 minute ago, Eigenvektor said:

It has two physical x16 slots, one of which is wired for x16, while the other is wired for x4. So make sure you've picked the right one.

 

Otherwise, might be damaged traces on the motherboard, or maybe the CPU isn't making proper contact.

yeah i installed it in the top slot which by the manual pretty sure its the x16 one so i will probably check the motherboard or cpu

[windening]

i was inspecting my gpu and realised this part of the pin missing. Would it be the cause?

[YoungBlade]

2 hours ago, windening said:

i was inspecting my gpu and realised this part of the pin missing. Would it be the cause?

That is a sense pin. It's supposed to be shorter than the others, because it's used to determine if the card is fully seated.

[Eigenvektor]

3 hours ago, windening said:

i was inspecting my gpu and realised this part of the pin missing. Would it be the cause?

No, as was said the pin looks like that on purpose.

 

If possible check the card in another PC. If it's works there, it's something with your motherboard or CPU.

 

Alternatively, maybe borrow a card from a friend and try it in your PC. If it works, then it's likely your card. If not, same a above.

[windening]

3 hours ago, Eigenvektor said:

No, as was said the pin looks like that on purpose.

 

If possible check the card in another PC. If it's works there, it's something with your motherboard or CPU.

 

Alternatively, maybe borrow a card from a friend and try it in your PC. If it works, then it's likely your card. If not, same a above.

oh okay thank you for explaining it. 

[Lobber]

Hi, 

I have a new PC with 5070ti installed.

 

Just in case you did not try this:

 

GPU-Z (v2.66) did not show correct PCIe-information for my system, but that seems to be normal.

 

To make GPU-Z display the correct information, press the "?"-icon for a test-render first.
It should now show the correct information ("PCIe x16 5.0 @ 16 5.0").

 

[windening]

On 6/14/2025 at 11:55 PM, Lobber said:

Hi, 

I have a new PC with 5070ti installed.

 

Just in case you did not try this:

 

GPU-Z (v2.66) did not show correct PCIe-information for my system, but that seems to be normal.

 

To make GPU-Z display the correct information, press the "?"-icon for a test-render first.
It should now show the correct information ("PCIe x16 5.0 @ 16 5.0").

 

Thank you for your reply. I have tried stress testing it using GPU-Z and the pcie lane count did not change. 

[windening]

Update: I have replaced my motherboard to an Asus ROG one and the gpu is now running at x16 gen 4 now. The reason is that the pcie slot on the previous mobo was affected by gpu sagging from the previous owner and as a result wasn't able to make contact with the pins. Thank you all for the help you provided.