rest of the system specs?

Hi lukey!
 
Nice setup you got there!
 
I'm not very familiar with Realbench but i know that OCCT default test is not good enough for stress test. Can you try to run LinX https://linx.en.lo4d.com/ for around 15 mins to see if it's stable?
 
I also suggest you remove 1 of your 1080Ti Kingpin for now. If one has a problem, running 2 at the same time will make it harder to understand which one.
 
If your system is LinX stable then you can go on testing 1 of your Kingpin: put the card settings at stock, run Time Spy and monitor with GPU-Z the GPU core/memory frequencies, the temperature, the vcore, the fan speed... The card should not run higher than 80°C, the frequencies, the voltage and the fan speed should remain stable.
 
Test both of your card this way, 1 by 1 and see what results do you get. You can also use an old version of OCCT, 3.1.0, to test the RAM of the kingpin using the GPU:memtest

You're right about this being a harder bench to run.  Pushed my temps higher than the others, but it still ran fine. 
 

Neutro
That's good news! It means your CPU / MB / RAM are stable.
 

If it crashes with SLI disabled, wouldn't it verify that the first card is the issue?

 
You can indeed test the first card only with SLI disabled. But whatever the results you will still need to test the other card alone to compare the results with the first one. I'm sorry if this is not an easy thing for you to do but it seems mandatory to me if you wanna get this thing straight!
 
And since you'll have to do this, you'd better remove the second card right away to ensure to test the first one without any interferences.

Well, i found a guide on how to "optimize around air" where a special kingpin bios was uploaded. I installed it, it allows a 150% power limit.

to achieve 2025Mhz on my first GPU, i need to set the power target to 150% and my core clock to +13, unfortunately i can't make it through Time Spy or Superposition even once. So I'm pretty certain, at least the first GPU is a lemon in terms of the "guaranteed" overclock... Crashing at 60c isn't great. 
 

Yeah, I just thought "maybe" the new bios would help.

Due to the effort of taking apart the desk, I'll swap the cards tomorrow.

Here's a result of the absolute best Firestrike result i can pass (its a 50% chance of passing or failing)
https://www.mediafire.com...ult.3dmark-result/file

Neutro
Can you link the validation url instead of the file? ;)
 
Are you running this at stock with SLI disabled?
 
If you got a problem with one of your card, you can use whatever bios you want it won't change anything... Maybe the modified bios could even be the root of the problem even if it is unlikely (no need to swap back for the time beeing).
 
 

Only installed the new bios today as a last resort. Had plenty of tests with the first 2 bios switches that come on it.

I'm pretty sure it's my first card that stuffed as disabling SLI and I still can't hit 2025stable on it

I think bcavnaugh is right on with pointing at the PSU. Looking at your set up of an 8086k 5.3gh 1.36v, 4x8g ram, and two 1080ti's in sli running at 2000 with 120% and stock mems im showing around a 1300w draw.  https://outervision.com/b/sCVDmE   This may or may not be your issue but i would look there first. These are really great cards when pushed. I hope you find the issue.

jeter9209
I think bcavnaugh is right on with pointing at the PSU. Looking at your set up of an 8086k 5.3gh 1.36v, 4x8g ram, and two 1080ti's in sli running at 2000 with 120% and stock mems im showing around a 1300w draw.  https://outervision.com/b/sCVDmE   This may or may not be your issue but i would look there first. These are really great cards when pushed. I hope you find the issue.

Just a shout out @jeter9209, thanks for the link. That will come in handy in the future.

More power captain!

Mine will draw over 600 watts.. thats with 8790k at 5200mhz and 108tii at 2100mhz.