8700K is a little outdated, but someone building a cheap gamer PC could buy, it's 6/12 and perform very well in games due to high frequency
11800 I suppose it's 11800h, a laptop cpu, and I don't think you can sell without selling whole laptop
It's good and strong CPUs, but not for mine anymore. Ryzen was / is better to mine Monero and Raptoreum for example, but now it's not anymore, there's no profits to make unless in rare cases you have solar energy or 1cent electricity
You can sell 8700K, and 11800h you can sell if you are not using your laptop anymore
I know it's tempting to mine with GPUs and CPUs to have maximum profits, but CPUs are only profitable in short periods of time, mostly in a bull run and at the lauch of the coin.