Upgrade from Z390 I9-990K to Z690 I9-12900K
At first I had doubts and after a lot of research on famous hardware test sites and especially seeing the little gain towards the 11th generation, despite the additional cost I decided to take the step towards the 12th generation with a watercooling kit and adding the same additional memory kit to make dual-channel because I don't like empty space at this level, all this to put my CG Asus GeForce RTX 3080 TI O12G GAMING and a new SSD 980 PRO M.2 PCIE NVME 1TO.
Well it's worth the cost and the gain is especially visible on boot time as well as program execution, loading time, encoding and Zip.
If you are hesitating like me at first, take the plunge despite a higher budget, it's worth it.