Well, that would be the case for most people who are building a new system today. I wouldn't build an entirely new system if I didn't need it. A quick look at PCPartpicker shows a ~$40 difference between a 5800x and a 12600k platform using the similar Asus Tuf Gaming Z690/x570 Plus DDR4 motherboards (the Intel platform is $40 more expensive). That being said, I don't necessarily need all the extra connectivity that Z690 boards provide although it might be nice in the future. Gaming-wise the 5800x and 12600k are similar. The 12600k wins in ST and MT apps. The 5800x has less peak power though efficiency (renders per day per watt) is pretty close. They'd use the same cooler, same RAM. Overclocking a 12600k shows a ~15% gaming improvement @1080p while the 5800x is ~6% according to Tom's review and that is tempting for the future - something not possible on the Intel without a z690 board.not worth it unless ur 3+ generations old and need an upgrade.
ya but 5800x is a last gen cpu compared to 12th gen.Gaming-wise the 5800x and 12600k are similar