How many power phases / 12V power connectors for overclocking i9 7940X?

clemens.ambros1

Prominent
Feb 10, 2018
3
0
510
Hi,

i want to overclock an i9 7940X. After some research I found out that I should buy a MB with two 12V 8 pin EPS power connectors.

1) Some of these MBs have 8 power phases, some have 13. Why?

2) How many phases do I need for safe OC?

3) Is it enough to buy a MB with one 12V 8 pin EPS and one 12V 4 pin ATX connector?

Thanks