LGA 3647

Intel 3rd gen Xeon scalable use two difference Socket LGA 3647 type Narrow ILM v Square ILM on motherboard.

Narrow ILM vs Square ILM

So need to identify which type of socket does your mother board supports to install different type of socket. fortunatly it is easy to identify the type of socket by looking your mother board layout.

LGA 3647 narrow ILM

LGA 3647 Square ILM