I have the i5-14600K running on a Pro MSI Z-790A WiFi MOBO. I built this as a gamer for my son almost exactly a year ago; at a time when it was becoming evident the MOBO manufacturers were leaving there boards open to overvolting CPU's as a default setting. Luckily, I had noticed the discussions when deciding on the 14600K, so when I started the build, I did the setup conservatively.
I flashed the bios before installing the CPU as recommended for 14th gen chips with the z790 boards. After completing that, I installed the CPU and got it otherwise ready for it's first boot. Upon posting, the first question upon entering the bios was to state the type of cooler being used. 1 - stock cooler 2 - box cooler or 3 - water cooler. I wasn't sure what it meant, but I chose option 1, figuring from what I had read these settings were among the first answers from MOBO manufacturers to address some of the overvolting that had been going on. This setting allowed excellent performance.
Because of the issues with overvolting and heat that I had already read about, I was a little surprised at the performance and the lack of high heat. The initial temps were in the upper80'sC. With 5.3Mhz on p-cores 4.5 Mhz on e-cores iirc. But the reading I had done suggested undervolting and further reducing the temps. I did this by using the CPU-Lite setting in the Bios and had that down to level 9 iirc. Voltages went down to 1.23V and temps dropped by 10C to not above 75C. same performance levels.
I religiously checked Bios updates and installed them and tested the results with Cinebench23 and HWMonitor. There were essentially no changes, altho I did have to go in and reallpy the CPU-Lite settings after each one. Then in October or November 2024 a Bios update significantly changed the performance while increasing themps. Suddenly I was running into the 90'sC - even to 99C while performance had dropped to 4.9Mhz on the p-cores and lower too on the e-cores - i don't remember the number. After much messing with things, knowing what the chip was capable of and going deeper into OC settings than I was comfortable with and still not getting the temps down and perfromance to where I knew they could be, I went with the default optimized settings in the bios and rebooted.
That change yielded the better performance, but the temps were 99C, 100C, so I shut down the test. Went into the CPU-Lite settings again they were set at like 21 iirc, so I put that back down to 9 and retested. Temps were down the to no more than 85C, so I went in and set the p-cores to 5.5Mhz and the e-cores to 4.9Mhz. Tested again. Temps still topping out no higher than 85C with performance stuck at those higher levels. The Cinebench23 score on that setup was 25xxx so I left it alone at that point.
It has been running great ever since, there was a new bios update in Dec that I did not install. I have left it alone for a while now. I will probably check it again soon, but I figure I'll have to go in and make the undervolting and OC changes all over again, so I'm slow-rolling it. Anyway... below is a link to a thread where the videos I followed and a reddit user who tuned his 13700K in that manner I did with my 14600K. Good luck.
https://forums.tomshardware.com/threads/i7-14700k-temps-too-high.3871729/page-2#posts Post 50 is where I posted the videos and the reddit link...