Idk why you talking about silicon lottery winner with 9900ks which make 5ghz with additional voltage , when this is the minimum for this cpu with stock settings, you are more like loser not to mention the expensive motherboard which you have and 9900ks 4.9? Sorry man.
I don't say he have bad results or he can't overclock, but he changing the lid, using second generation of motherboard with first generation costing $1100 and talking how 10900k run cool and nice not to mention that he have a golden sample -
"I was shocked when I first read that some leakers claimed the 10900K runs extremely hot. I had the exact opposite reaction. If so, how can I OC to 5.4 GHZ and not break 80C when the chip is under load? ".
In real life you must to be extremely lucky to get something like this, look at your experience with 9900ks.