Its compatible an hp proliant dl380 g6 server with Intel® Core i7-7700K?
The machine specificatons are:
Procesador: 2.40 GHz Quad-Core Xeon (E5620) - 5.86 GT/8MB
disco: HP 146GB - SAS 2.5" SFF - 10K RPM
PSU: x1 750 W
No, they are not socket compatible.
Even if they were socket compatible, you would have to ask HP if the i7-7700k was compatible with the HP BIOS.
Just a note: these processors are separated by almost 8 years.