i7 6700k different temp readings

[Navje]

I am monitoring CPU temperatures with 4 different software programs and all programs show different temperatures in 100% load.
ASUS AI Suite 3 - 65°C
NXTZ CAM - 71 °C
HWMonitor - 86°C
MSI Afterburner - 81°C

When idle AI suite, HWmonitor & MSI afterburner show same temp 32-36°C, CAM shows 23-29°C

So which temp is real?

Spec of PC:
MB - Asus Z170-A
CPU - i7 6700k
Cooler - Arfctic cooling Freezer 13 limited edition
Ram - DDR4 Hyper X 16gb 2400MHz (15-15-15-36)
GPU - R9 390
PSU - Corsair RM650x

 

[Ethanh100]

Normally Cam is pretty accurate, but seems to be the odd one out here so I would ignore its readings.

 

[Stysner]

Do you know what the VCore (CPU voltage) is at? If it's automatic, it might be overvolting it (not to worry, it won't damage your CPU). But as far as the temp readings go, you have to keep in mind the ASUS AI Suite is built with ASUS motherboards in mind, the other software you listed are not. Of course, something could be wrong with AI Suite, but I'd sooner trust the software the motherboard manufacturor made specifically for their products instead of software that isn't.

As far as temps go, 86 is pretty damn high, and could shorten the lifespan of the CPU (probably nothing you'd ever notice, it would still go on for years and years) but it isn't ideal. Mine is OC'd to 4.4GHz on 1.23V, and it never gets above 67C with a (Noctua) NH-U14S. So if yours isn't OC'd and the voltage setting is auto, I'd believe anything from 65C to 75C, don't think 86C is a correct reading.