1080Ti does not idle with second monitor plugged in.

[BC94]

Hello folks - I've got a bit of an issue where my 1080Ti does not down clock once I have my secondary monitor plugged in... it should be sitting idle with a GPU clock of 140~MHz and 800~MHz memory. However, once I plug the secondary monitor in it throttles up to 1493(out of 1987)MHz GPU and 11088MHz memory. My primary monitor is the ROG Swift 165Hz G-Sync and my secondary is an old AOC 144Hz. My original thought was that that maybe the difference in refresh rates might be to blame -but no amount of tinkering seemed to help.

The specifics for the GPU:
ASUS Strix 1080Ti OC
Driver; 385.69
V Bios; 86.02.39.00.AS08
GPU OC Software; GPU Tweak 2 V1.4.7.3

Also I'm running this on an ASUS Strix z270F Gaming motherboard with the latest BIOS.

Not sure if that's all necessary information but thanks to anyone in advance that can give me some advice.

 

[DRagor]

Check this thread http://www.tomshardware.co.uk/answers/id-3437713/high-idle-clocks-gtx-1080ti-multiple-displays.html
3rd post from end, by Mastropier0

I found a solution.

Download the NVIDIA Inspector version 1.9.7.6: http://www.guru3d.com/files-get/nvidia-inspector-downlo...

1) Extract and run as administrator "nvidiaInspector.exe"
2) Right click on the "Show Overclocking" botton and select "Multi Display Power Saver"
3) Check your(s) GPU and then check "Run Multi Display Power Saver at Windows Startup"

This work for me:

Windows 7 SP1 64
GeForce 382.53 WHQL

i7 2600K
32GB DDR3
Asus Strix 1080Ti OC
Samsung 23" 1920x1080 @ 60Hz (HDMI)
Samsung 19" 1366x768 @ 60Hz (DP to HDMI adapter)
Samsung 19" 1366x768 @ 60Hz (HDMI)

Idle temps: https://k61.kn3.net/62BE10790.png

Nvidia Inspector cap: https://k60.kn3.net/9201CF142.png

Asus GPU Tweak II cap: https://k60.kn3.net/34E6EB325.png

 

[BC94]

Not a massive fan of that solution - I would seemingly have to check and uncheck my GPU every time I enter/exit a game as it stops my card from reaching a quarter of it's potential speed when an app is launched :/
Thanks for the advice though!

 

[kayno1993]

Not a massive fan of that solution - I would seemingly have to check and uncheck my GPU every time I enter/exit a game as it stops my card from reaching a quarter of it's potential speed when an app is launched :/
Thanks for the advice though!

Bit of a late reply, but i had this same issue.
If i unplugged 1 of my 3 monitors it would clock down fine, tried the nvidia inspector solution and that had a delay switching p states.
The issue ended up being when i tried it Nvidia Surround it changed the refresh rate of 2 of my monitors to 59hz from 60hz.
I changed all 3 back to 60hz and it instanly changed p states like it should.
hope this helps.