CPUZ shows that my GPU 980Ti using only PCIE 3.0 8 x lanes instead of 16 x

[NohyCZ]

MotherBoard: GIGABYTE Z170-D3H
CPUZ shows that my GPU 980Ti using only PCIE 3.0 8 x lanes instead of 16 x . When i check it in Nvidia control panel there is 16 x .
I updated the newest bios of version F20.
In BIOS i can set AUTO / GEN1 / GEN 2 / GEN 3 for general PCIE standart, but I cant see where I can set number of PCIE lines. If its possible.

When i googling, at NVIDIA forum was something about that I have to set Sata3 TURBO mode off. But I cant find this setting in bios.

And find too, that in past time was detected similar problem with other Gigabyte board.

Please where is the problem?

 

[NohyCZ]

And add that iam using right PCIE slot. First.

 

[ahnilated]

You can try setting the bios to Gen3. It is probably on auto currently.

 

[NohyCZ]

Gen3 = Auto = PCIE 3.0. I tried allready... Same reasult in CPUZ - 8x lines

 

[NohyCZ]

Here is maybe solution. My board not support SLI only CrossFire and in this case is 8x normal - nonissue.
http://www.tomshardware.co.uk/answers/id-3170619/gtx-1080-pcie-lanes-run-worried.html

 

[Zerk2012]

Click the blue ? Near where it says the x8 to run the short test and see if it goes to 16.

 

[NohyCZ]

Thx for fast replying. I realized according Tomshardware that everything is ok. In HWinfo, there I can see 8GT/s in maximum. According to Tomshardware moderator it is OK.

---> A Pcie version 3 lane is capable of 985MB/s (PER LANE) or 8GT (giga transfers) so an x16 slot would have 15.75GB/s of bandwidth.

Today i check it in GPUZ, but I think it will be fine... CPUZ showing misleading information....

 

[NohyCZ]

Gpuz under render test show the same resault. @ 8x3.0PCIE.
In HWINFO is max speed 8GT/s.

I dont use any M2. SATA PCIE card.
I use right first 16x3.0 PCIE.
In GPUZ under render test is still @x8 3.0 PCIE.
I load optimized bios.


SO?

My graphics card or motherboard is faulty?
Or for some reason GPUZ and CPUZ show 8x3.0PCIE. Isnt it?
I need try another graphics card firstly. It is simplest solution...... But i dont have another one now...