OC'd CPU temperature increase after BIOS update but same settings?

[takkischitt]

I just updated my ROG Maximus X Hero motherboard to the latest BIOS (Version 2203). Previously, I could run my 8086K @ 5GHz with 1.28V (Cooling: NZXT Kraken X62 & RAM: G.SKILL F4-3600C17D-16GTZR 16GB 2x8GB TRIDENT Z RGB 3600MHZ) and would get 80-90C temps under Prime95 torture testing, which I was fine with as it's extreme heat production isn't realistic for normal use, plus I'm delidding soon, so hoping for 15-20C drop after that.

Now, however, after installing the BIOS update, and using the same overclocking settings, the temps hit 100C+ under Prime95 torture testing and I have to end the test in well under a minute due to the temps.

Has anyone else experienced this? Does anyone know if there is any way to reduce the temps without reducing the OC? I know I'll be delidding and it'll probably solve the issue, but at the same time, I want my 10-15C back!

 

[Avalon]

Anything in the BIOS release notes about recalibration of temp monitoring? It may be a case that it was historically under reported.

 

[takkischitt]

No, nothing regarding temp monitoring. This is all the updates that were applied:

Version 1704
2018/10/02
9.86 MBytes
ROG MAXIMUS X HERO BIOS 1704
Improved system performance and stability.
Update ME FW to 11.8.55.3510
Update CPU MicroCode

Version 1801
2018/12/21
10.17 MBytes
ROG MAXIMUS X HERO BIOS 1801
Updated CPU Microcode.
Secure erase now supports NVME devices.
Fixed USB device issue.
Improved system performance and stability.

Version 1901
2019/04/11
10.35 MBytes
ROG MAXIMUS X HERO BIOS 1901
Updated uCode for the latest Intel processor.

Version 2003
2019/06/17
10.4 MBytes
ROG MAXIMUS X HERO BIOS 2003
Improve System Performance.
Updated ME FW.
Updated Intel commit for security.
Updated RAID driver.
"Before running the USB BIOS Flashback tool, please rename the BIOS file (M10H.CAP) using BIOSRenamer.''

Version 2102
2019/07/19
10.36 MBytes
ROG-MAXIMUS-X-HERO BIOS 2102
Updated ME to ver. 11.8.65
Improved DRAM compatibility.
Updated microcode for Security.
Improved system stability.
"Before running the USB BIOS Flashback tool, please rename the BIOS file (M10H.CAP) using BIOSRenamer.''

Version 2203
2019/10/17
10.39 MBytes
ROG-MAXIMUS-X-HERO BIOS 2203
1) Support Intel upcoming CPU
2) Improved system stability and performance
3) Update RAID driver to rev. 17.5
4) Support Intel Optane Memory H10 device