GPU Running at wrong PCIe

[Tynan Vilmos]

I built my PC a bit over a year ago and was aware that the GPU would be running at 8x due to the riser cable included with the case, I figured I'd get around to replacing it eventually.
Well that eventually has finally come and after what feels like the 100th time tearing into this system [Originally built it for a class] I got a proper 16x riser cable installed but to my surprise GPU-Z is reporting that it's still running at 8x.
I was under the impression that it would just automatically go from 8x to 16x, so I won't be surprised if there's a BIOS setting I was supposed to flip somewhere.
Given that the board is Mini-ITX, I'm pretty sure the GPU is in the correct PCIe slot as well.

 

Ryzen 7 3700x

Asus ROG Strix X470-i

Gigabyte 2080 Turbo OC 8g

Phanteks Evolv Shift

 

[TylerDurden!]

4 minutes ago, Tynan Vilmos said:

GPU

run the little built in render test.  Does it change?

[Tynan Vilmos]

2 minutes ago, TylerDurden! said:

run the little built in render test.  Does it change?

I see the small window with the animation moving, I'm not sure what's supposed to change.

[TylerDurden!]

9 minutes ago, Tynan Vilmos said:

change

did the speed change?

[rcmaehl]

 

[Cyracus]

bios advanced tab, onboard devices configuration, pciex16 mode, make sure set to gen 3x16

[Tynan Vilmos]

50 minutes ago, TylerDurden! said:

did the speed change?

Is the test supposed to end by itself or just end it it whenever? So far it hasn't changed anything after running it for about 10 minutes.
 

46 minutes ago, rcmaehl said:

 

36 minutes ago, Cyracus said:

bios advanced tab, onboard devices configuration, pciex16 mode, make sure set to gen 3x16

The BIOS was already set up this way when I looked just now.

[TylerDurden!]

11 minutes ago, Tynan Vilmos said:

end by itself

no it will run forever.  It is just supposed to stress your GPU a little, and usually bring up the pciex slot to full speed.  You would know something changed because it would change in the bus interface box

 

What else do you have plugged into your pciex slots or m.2 drives

[Tynan Vilmos]

6 minutes ago, TylerDurden! said:

no it will run forever.  It is just supposed to stress your GPU a little, and usually bring up the pciex slot to full speed.  You would know something changed because it would change in the bus interface box

 

What else do you have plugged into your pciex slots or m.2 drives

Only 1 PCIe slot.

M.2 slots each have an SSD, Total of 2 drives in M.2

[TylerDurden!]

1 minute ago, Tynan Vilmos said:

M.2 slots each have an SSD, Total of 2 drives in M.2

that is the issue.  In order to get full 16x you have to remove your m2_2 drive otherwise it will only run at 8x

 

it's in your manual.  Ch3 Page 16

[TylerDurden!]

5 minutes ago, Tynan Vilmos said:

PCIe slot.

[Tynan Vilmos]

4 minutes ago, TylerDurden! said:

that is the issue.  In order to get full 16x you have to remove your m2_2 drive otherwise it will only run at 8x

 

it's in your manual.  Ch3 Page 16

Well, I'll be... Didn't even consider that until you mentioned it. I was hoping to at least be able to run 1 of the M.2 slots.
I suppose I wouldn't be gaining that much performance by going 16x so it'll be more beneficial to keep my SSDs installed.
 

Thanks for the quick responses guys!  ^^b