Hello everyone.
 
I have two PCs with the exact same hardware inside them. (let's call them PC1 and PC2)
 
CPU: i5 6600
RAM: FuryX 2133 16GB 
MOBO: ASUS B150M PRO Gaming
SSD: Samsung nvme 960
PSU: Corsair TX550M
GPU: EVGA 1060sc 3GB
 
Same monitor (Dell 1440p 60hz), same connection (Display port), same windows 10 pro, same drivers.
 
PC1 is working perfectly.
Temperature on the 1060 is around 35c with 0% fan and ~24c with 40% (idle @ desktop)

 
(room temp is always 22-23c max)
 
Now the problem:
 
The GPU on the PC2 was overheating like crazy. 55c+ even on desktop with nothing running in the background. Clocks @ 253mhz/650mv usage 0%
In-game temp was more than 85c with 100% fan (Clocks less than 1600mhz). After a while I could see artifacts so I used the rma process and a week later a brand new 1060sc was in my PC2.
 
Quess what. The brand new 1060sc on PC2 is idling around 55c with 0% fan and 35c with ~40% again.
GPU temp is always more than 35c no matter what. Windows boots in less than 30seconds and the card is around 35c when the exact same time the GPU temp on the PC1 is 22-23c.
 
Load temp is more than 85c in RE7 Biohazard (thermal throttling) when the other card is always around 65c with full boost clocks @ 2012mhz on the same game/same time.
 
I've tried to: change motherboard, cpu, format windows, other ssd, other bios on the gpu, new TIM... nothing, same temps.
 
Then I installed a waterclock (EKWB) and used my custom setup with only the 1060 in the loop.
 
Water temp 20c
GPU temp idle: 30c
GPU temp HEAVEN bench: ~32c after a full pass.
 
My conclusion is that some pascal cores are not measuring temperature correctly or nvidia/evga forces an offset (my card is around +10c delta always) for some reason. (maybe boost related?) 
 
I've seen a LOT of people complaining about idle temps, is there any possibility for an official answer about this?
 
Thank you and sorry about the long post.
 
tl;dr Pascal temperatures are not accurate on some cards for a reason.

Sajin
Hmm. Sounds like the coolers on the cards that were ran in PC2 may have been warped.

That was my first thought. That's why I installed the waterblock and I'm still having +10c delta (from water temp) 
 
Contact on the core is perfect btw...