Graph card work at PCIE x4 3.0 not PCIE x16

[Fkiller]

my graph card work at PCIE x4 3.0 not PCIE x16 3.0

I can’t find the sitting in BIOS,

Will it limit performance of something?

How can I set x16 3.0,because I want to buy a monitor 4K HDR1000 144hz just for watching movies.

CPU is 6700k,
Motherboard is ASUS Z170i pro game.there is only one  PCIE x 16 slot

One SSD is Western Digital Black M.2 1TB nvme。

My English isn’t good,sry

[boggy77]

in which pcie slot on the motherboard is the gpu plugged in?

Edit: Nevermind, saw there is only one. have you tried gaming? is it working normally? maybe there is just an error reporting in gpu-z

[Kirky2k15]

Are you actually running anything when you open GPU-Z? - IIRC, your GPU needs to have some load on it for it to be able to report the PCIe lanes in use correctly.

 

Usually it reports x8 at idle then x16 when under load

[Fkiller]

6 minutes ago, boggy77 said:

in which pcie slot on the motherboard is the gpu plugged in?

Edit: Nevermind, saw there is only one. have you tried gaming? is it working normally? maybe there is just an error reporting in gpu-z

There is only one PCIE slot, I will run a game to check it later,thanks for your help

[Fkiller]

6 minutes ago, Kirky2k15 said:

Are you actually running anything when you open GPU-Z? - IIRC, your GPU needs to have some load on it for it to be able to report the PCIe lanes in use correctly.

 

Usually it reports x8 at idle then x16 when under load

Ok I’ll try a game later and check it,thanks for your help！

[RAS_3885]

1 minute ago, Fkiller said:

Ok I’ll try a game later and check it,thanks for your help！

You can also click the little '?' next to the bus interface and run a quick render test from the screen that pops up. The bus interface will update automatically once that starts.

[Fkiller]

On 5/1/2020 at 11:21 PM, RAS_3885 said:

You can also click the little '?' next to the bus interface and run a quick render test from the screen that pops up. The bus interface will update automatically once that starts.

I played the APEX,still PCIE x4 3.0,I checked BIOS,PCIE sitting is X4 and it’s gary I can’t change it，:(

[Fkiller]

On 5/1/2020 at 11:21 PM, RAS_3885 said:

You can also click the little '?' next to the bus interface and run a quick render test from the screen that pops up. The bus interface will update automatically once that starts.

I played the APEX,still PCIE x4 3.0,I checked BIOS,PCIE sitting is X4 and it’s gary I can’t change it，:(

[Kirky2k15]

Sounds to me like you've ran out of PCIe lanes - I noticed you have an NVMe drive installed that will be using up 4 lanes but intel 6700k have 16 lanes then the motherboard itself should have 16 so i have no idea why your gpu is only using 4 - i wouldn't worry too much about noticing any performance difference from x4 to x8 to x16 though.