I've never really over clocked, but I decided to try it out using precision XOC. First thing I did was raise the power target to 120% (which also raised the temp). Ran the benchmark and it crashed about a quarter of the way through. Didn't touch anything else. Then I set the power/temp target back to default and raised the core gpu clock offset up to about 80 and the mem clock offset to 400 and it ran fine. Once again I tried to raise the power target (even to 105%) and it crashed. Thermals are fine through out...maxes at like 63 degrees. Also using two separate power cables going to the PSU from the video card. 
 
Specs:
CPU: Intel Core i7-8700K Coffee Lake 6-Core 3.7 GHz
GPU: EVGA 1080 Ti SC 2
PSU: EVGA SuperNOVA 750 G2, 80+ GOLD 750W
Ram: G.SKILL TridentZ RGB Series 16GB (2 x 8GB) (PC4 25600)
Mobo: ROG STRIX Z370-G GAMING (WI-FI AC)
HD: SAMSUNG 960 EVO M.2 500GB NVMe PCI-Express 3.0 x4 Internal Solid State Drive
AiO: NZXT Kraken X62 All-in-One 280mm CPU Liquid Cooling System
Case: Fractal Design Define Mini C
Fans: 2x Noctua NF-A14 140mm
1 Noctua NF-F12 120mmS

Cool GTX
Which version of Precision X OC ?

Is this the only version of X OC you have loaded on the PC ?
 
OS ? (details)
 
BIOS up to date on MB ?

Any OC on your MB, RAM or CPU ?
 
Did you run a "Auto OC feature" on your MB ?  (this could have OC the PCIe bus)
 
Which Nvidia driver ?
 
What if anything have you changed in Nvidia Control Panel ?
 
What if anything have you changed in Windows regarding Graphics ?  (Prefer Max Performance ?)
 
Monitor, type of cable to conect & refresh rate ?

 
Bios is up to date

XOC Version is 6.2.7
 
Windows 10 Pro
 
I did have the CPU manually overclocked and XMP set for my ram but set everything back to default and ran Heaven again with the same result when the power/temp target is moved up. At 100% it seems fine, can even raise the gpu and mem clock a bit. 
 
Disabled gsync in nvidia control panel and changed power settings to adaptive (what its been running on) and also tried maximum performance. Same thing. Nothing else was changed in there from default.
 
Running 431.36 drivers
 
ROG Swift PG279Q monitor running at 1440p at 144hz with a DP cable
 
Havent changed anything in Windows regarding graphics. 

Sajin
Very odd. How old is your psu? Have you tried testing the card in another pci-e slot? Have you tried to reflash the vbios on the card?

Got it back in October of 2017 so not even two years yet. Gonna try to put it in another slot, also how do I go about reflashing the vbios? 

Sajin

Halph Pint

Sajin
Very odd. How old is your psu? Have you tried testing the card in another pci-e slot? Have you tried to reflash the vbios on the card?

Got it back in October of 2017 so not even two years yet. Gonna try to put it in another slot, also how do I go about reflashing the vbios? 

You'll need to download nvflash, and use the nvflash64.exe to reflash the card. You can do that by drag & dropping the SC2 vbios onto the nvflash64.exe. 

Awesome, will give that a try also, thanks for the tips!

No problem.