GPU running at PCIE gen 3 X4 and not at X16

[trj8wwportland]

I'm using an app called gpu-z to look at the specs of my GPU and found out that my GPU is only running at pcie x4 gen 3 instead of x16 gen 3. My GPU is in the top slot of the motherboard and it does electrically support pcie x16. I have tried updating and downgrading the bios, I have try clear CMOS, I have tried reseating the GPU in is slot and all of the power cables and I have tried taking everything else out of the pcie slots. It's not my GPU as it's a 1080ti and I have tried it in another system and it works fine. Can you please help me with this just to make sure I have tried everything with out replacing any parts, thanks.
(I know its not a big performace difference but I want the most out of my 1080ti)

CPU: I7 4790k Not OC
GPU: evga 1080 ti sc black Not OC
Motherboard: gigabyte GA-Z97P-D3
Ram: HyperX 8gb @ 1866 x3
PSU: Corsair 1000W

 

[R0GG]

When on Gpu-z window click on the PCIe Render Test : question mark next to the PCIe link properties:

 

[trj8wwportland]

When on Gpu-z window click on the PCIe Render Test : question mark next to the PCIe link properties:

No Doesn't change at all when running a render test
A render test will only change what gen it runs at not how many lanes it gets given

 

[R0GG]

Did you check your Bios for the PCIe assignment and speed ? Some motherboards have option to change PCie operating properties.

 

[trj8wwportland]

Did you check your Bios for the PCIe assignment and speed ? Some motherboards have option to change PCie operating properties.

The Bios only has one setting for pcie and that is to change the gen, there are no speed settings

 

[R0GG]

Bios : Initial Display Output >> PCIe 1 Slot Sets the graphics card on the PCIEX16 slot as the first display. (Default)
I would make sure windows is running on the high performance scheme, and graphic card power limit is set to 100%, and if possible load optimal Bios defaults.

 

[trj8wwportland]

Bios : Initial Display Output >> PCIe 1 Slot Sets the graphics card on the PCIEX16 slot as the first display. (Default)
I would make sure windows is running on the high performance scheme, and graphic card power limit is set to 100%, and if possible load optimal Bios defaults.

I have left my bios on default so this is already done, and I have set my gpu to a power target of 120% and set it to maximum performance. Windows is on high performace. Still the same

 

[rustech]

My GPU is in the top slot of the motherboard

1) Hm, have you tried the bottom slot? User's manual says it should be x4. Try it in case the engineer and the soldering station were drunk and mixed up the slots.
2) How are things going after running some powerful game?
3) Does AIDA64 show the same value? (Display - GPU - Bus Type)
4) Check bios settings for ASPM or some other Power Management.
5) How are things going via LiveCD(win10)? You might probably need to visit Device Manager and automatically install standard windows vga driver there.

I have tried taking everything else out of the pcie slots

Have you also tried to remove all usb-devices from 3.0 and hard-dvd-cd-floppy drives leaving only system disk? You can insert keyboard and mouse in usb 2.0

 

[R0GG]

- Try reverting back to previous Bios version
- I would check on motherboard manual whether the PCIe x16 shares bandwidth with other ports in certain circumstances, and whether is true PCIe 3.0 or just PCIe 3.0 compliant

 

[R0GG]

Can you test your Mobo PCIE 3 with another video card?
Your mobo might have some hardware defect

 

[IHateSmurfs]

What is the slot where your GPU is positioned at?