Not the OP but I upgraded from 6600K -> 1800X and honestly they're not even in the same ballpark performance-wise. When you come across software that can take a

Not the OP but I upgraded from 6600K -> 1800X and honestly they're not even in the same ballpark performance-wise. When you come across software that can take advantage of multiple threads it's not even a contest, the 1800X just walks away laughing. One example I can think of off the top of my head is gaming and transcoding (Plex server) at the same time. Even with QuickSync enabled and running, transcoding HEVC->x264 would regularly stutter and drop frames while a game is running, while also affecting the games framerate. The 1800X (without hardware accelerated video transcoding) just plows through it like it's nothing. I've even had it transcode 10-bit HDR video while playing Forza Horizon 4, not a single loss of framerate in either the game or the video. The extra cores/threads are nothing to scoff at when software can take advantage of them. My upgrade consisted of only the board and CPU; same RAM, GPU, PSU, SSD, etc.