Maybe I'm wrong, but I think any SP-63 with a 280mm radiator could do easy 5.1~5.2GHz all cores @ full load, if AC/DC loadline & LLC are tuned correctly.I am thinking about update to 10900 CPU because IMC in 10700 too weak for fast RAM. I can not returning CPU to reroll better SP ranking. So is K at all better chance than KF for OC?
5.3GHz all cores is not so easy... The problem isn't the temperature, but current and power.
What frequency are you thinking when you talk "better chance for OC"?