PCIe lanes question

[Soft Cell]

Hi fellow enthusiasts, first of all my system looks like this:

- aurus x470 ultra gaming
- ryzen 5 2600 @ 4 Ghz
- 16G crucial ballistix @ 3200 Mhz
- MSI rtx 2070 Gaming Z

- 1 nvme SSD
- 1 Sata SSD
- 1 Sata HDD

i am in the process of benching and overclocking my gpu as i noticed that it is running at:
- PCIe v3.0 x16 (8.0 GT/s) @ x4 (2.5 GT/s) -not under load
- PCIe v3.0 x16 (8.0 GT/s) @ x4 (8 GT/s) - under load

 

this means i dont have enough pci lanes? my gpu is in the top slot and as far as i know my ryzen 5 2600 has 20 pcie lanes:

gpu : 16 lanes
NVME SSD : 4 Lanes

=20 lanes? or am i missing something wrong here?

 

thanks in advance friends, this could maybe explain why i have been dissapointed by the 2070 's performance.

 

some screenshots:

https://imgur.com/a/0MWbaLu  --HWINFO

 

https://imgur.com/a/Rdddo6D  --PCIe feature test: i see 3.3 GB/s bandwidth which should be about 15 if i am not mistaken?

[Chiyawa]

Which slot do you put your GPU into? You should put your GPU into the top x16 slot (the nearest to the CPU).

[Soft Cell]

1 hour ago, Chiyawa said:

Which slot do you put your GPU into? You should put your GPU into the top x16 slot (the nearest to the CPU).

it is in the top x16 slot

[Fragment323]

2 hours ago, Soft Cell said:

Hi fellow enthusiasts, first of all my system looks like this:

- aurus x470 ultra gaming
- ryzen 5 2600 @ 4 Ghz
- 16G crucial ballistix @ 3200 Mhz
- MSI rtx 2070 Gaming Z

- 1 nvme SSD
- 1 Sata SSD
- 1 Sata HDD

i am in the process of benching and overclocking my gpu as i noticed that it is running at:
- PCIe v3.0 x16 (8.0 GT/s) @ x4 (2.5 GT/s) -not under load
- PCIe v3.0 x16 (8.0 GT/s) @ x4 (8 GT/s) - under load

 

this means i dont have enough pci lanes? my gpu is in the top slot and as far as i know my ryzen 5 2600 has 20 pcie lanes:

gpu : 16 lanes
NVME SSD : 4 Lanes

=20 lanes? or am i missing something wrong here?

 

thanks in advance friends, this could maybe explain why i have been dissapointed by the 2070 's performance.

 

some screenshots:

https://imgur.com/a/0MWbaLu  --HWINFO

 

https://imgur.com/a/Rdddo6D  --PCIe feature test: i see 3.3 GB/s bandwidth which should be about 15 if i am not mistaken?

Go to BIOS and check if your lanes are distributed properly - some board allow you to split x16 lanes to more slots, for example 8+8, or 4+4+4+4. You want all 16 of them configured to fist slot.

[Soft Cell]

5 minutes ago, Fragment323 said:

Go to BIOS and check if your lanes are distributed properly - some board allow you to split x16 lanes to more slots, for example 8+8, or 4+4+4+4. You want all 16 of them configured to fist slot.

i dont think my bios allows for this option to be set but i will defenitely check this evening

[Fragment323]

28 minutes ago, Soft Cell said:

i dont think my bios allows for this option to be set but i will defenitely check this evening

It does, i have checked on product page.

Another thing, you can try to update bios to latest stable version.

Good luck, keep me posted.

[Soft Cell]

6 minutes ago, Fragment323 said:

It does, i have checked on product page.

Another thing, you can try to update bios to latest stable version.

Good luck, keep me posted.

i updated to the latest version yesterday so ill check this evening, thanks!

[shaz2sxy]

3 hours ago, Soft Cell said:

am in the process of benching and overclocking my gpu as i noticed that it is running at:
- PCIe v3.0 x16 (8.0 GT/s) @ x4 (2.5 GT/s) -not under load
- PCIe v3.0 x16 (8.0 GT/s) @ x4 (8 GT/s) - under load

Ignore me, totally read it wrong

 

have you got anythign else plugged intot eh PCIE lanes

[Soft Cell]

Just now, shaz2sxy said:

That just shows while not under load it is not using all the bandwith, but when under load it is.

 

that is normal?

indeed, but the bandwidth should be 15Gb/s instead of 3 as seen in this 3Dmark pcie bench
https://imgur.com/a/Rdddo6D

 

 

[Soft Cell]

1 hour ago, shaz2sxy said:

Ignore me, totally read it wrong

 

have you got anythign else plugged intot eh PCIE lanes

yes i have one NVME ssd plugged in