Originally Posted by ThingyNess
I didn't see anyone make a note of it in this thread, but for reference in case anyone gets a 1080Ti for which there isn't a BIOS dump / analysis yet.
Rather than digging through the code and hex values like I've been doing, if you actually have the card in hand:
Load up a command prompt (cmd) and copy/paste the following:
"C:\Program Files\NVIDIA Corporation\NVSMI\nvidia-smi.exe" -q -d power
You'll see a nice little text output like this (it's from my 1070 as i'm still waiting on my 1080Ti to arrive)
Timestamp : Mon Apr 10 15:15:39 2017
Driver Version : 381.65
Attached GPUs : 1
Power Management : Supported
Power Draw : 35.86 W
Power Limit : 199.32 W
Default Power Limit : 166.10 W
Enforced Power Limit : 199.32 W
Min Power Limit : 75.00 W
Max Power Limit : 200.00 W
Duration : 2.69 sec
Number of Samples : 119
Max : 36.45 W
Min : 8.99 W
Avg : 32.49 W
This also gives you an easy way to see absolute TDP numbers rather than percentages like GPU-Z gives you, which is nice.
From this, you can also see that the sliders in most GPU tweaking software seem to round to the nearest integer percentage. For example my slider only goes to 20%, which gives me 166.1w * 1.2 = 199.32w, even though the card technically supports 200w. If you really want that last .68w of TDP headroom, you can actually use nvidia-smi to set the power limit via the command prompt.
This is also handy if you want to add the command to a batch file and increase your TDP limit without having to have any OC software start up in the background, as they eat up memory and (rarely) have negative interactions with certain games.
To set a new power target, make sure you run the command prompt or batch file with admin rights, and type:
"C:\Program Files\NVIDIA Corporation\NVSMI\nvidia-smi.exe" -pl <newpowerlimit>
The output should look something like this, which for me gave me the extra .68w of TDP that my 1070 Strix OC BIOS was capable of that Afterburner and the ASUS Gpu-Tweak utilities weren't giving me
C:\WINDOWS\system32>"C:\Program Files\NVIDIA Corporation\NVSMI\nvidia-smi.exe" -pl 200
Power limit for GPU 0000:02:00.0 was set to 200.00 W from 199.32 W.