Dell XPS 8700 GPU running at x4 Speeds

try running a load on the graphics card, and checking again.

spin up a quick run of Furmark or one of the Unigine tools like Valley or Heaven while GPU-Z is running and see what happens..

I can't remember, but GPU-Z might even have a stress button behind that question mark.pu

got back on my windoze machine and GPU-Z does have a little stress button behind the question mark.

But, my GTX 970 shows this at idle and under load.

idle: PCI-E 3.0x16 @x16 1.1

load: PCI-E 3.0x16 @x16 3.0

so I'm not sure what's up with yours showing x4

Tried stress testing, all it did was throw it to x4 3.0, still not x16. I might throw my 1060 into another computer, see if the problem follows the card.

Side note: Were you on a XPS8700? was there any expansion cards? is the wifi card installed?

XPS 8700. core i7 4770. Wifi card installed, but disabled. No expansion cards used.

One system has a GTX 970 and used to have a GTX 760. Other system runs a GTX 770. All run PCI-E 3.0x16 when under a load.

Here is a screen shot I posted some time ago in another thread.

Well this confirms that the 8700 is capable of running at 16x speeds, but still confused as why mine's not

When I get home, I'm going to try to reseat the card, see if that helps.

have you uninstalled the driver completely? And then re-install using the driver directly from nVidia?

I would use a tool like Display Driver Uninstaller (DDU)

I suggest downloading it from  wagnardsoft.com, don't install from other sites as it may have bloatware with it.

This screenshot was taken on a fresh install of windows 10 as I was doing an experiment and thus had a fresh driver, it appears the same on my main installation. I'll give DDU a try anyways!