https://wccftech.com/intel-core-i9-9900k-9th-gen-gold-solder-ihs-cpu-pictured/

It looks like Intel has finally listened to overclockers and enthusiasts and are going to offer their first soldered IHS mainstream CPUs in quite a while. With the 9th Generation family and the new eight-core parts, Intel will be offering faster clocks, more multi-core performance and enhanced overclocking potential through an optimized process node and a solder design that will keep your chip hitting those high clock speeds with overclocking.

Now we have known that Intel was eventually going to use solder on their upcoming processors sooner or later. There were a few reasons behind that, first and the most obvious one is the rumor mill which talked about this months ago and the second reason is that Intel knows that enthusiasts and overclockers love to overclock mainstream chip and see their potential in terms of overall clock speeds.