At CES 2021, Intel announced their new socket LGA 1700. The matching CPUs, which are available since fall 2021, have a new hybrid architecture and are more powerful than previous generations through the use of high-performance and efficiency cores.
This time, the new architecture also has a direct effect on the appearance, as due to 500 more contacts than in its predecessor (which is why the number in the name has also risen from 1200 to 1700), the socket had to be greatly enlarged.
Thus, the heatspreader is much larger than before, and above all no longer square, but rectangular. While this heralds a new era for Intel CPUs that promises even more performance, unfortunately CPU-coolers from the years before 2022 are not compatible with this change.