No, you don't need to use both CPU power headers.
No, you don't need to use both CPU power headers.
Here’s a clear version of your question:
Are the headers on my motherboard labeled as connectors or power connectors? Should I use one cable from my PSU for both headers, or just one? My motherboard is an MSI Z590 Gaming Carbon with a 11900K CPU. I’ll also be getting custom cables. Do I need an 8-pin EPS connector for the CPU power?
Ensure you have sufficient 8-pin EPS cables for your power supply. Link both for optimal performance. Using just one may limit functionality on many boards and processors.
Usually you only need one of the EPS 8pin cables for CPU power, but when the motherboard has two 8pin or an 8 + 4pin setup, both should be connected. Some believe those extra pins are just for overclocking, though even if you don’t intend to overclock, it’s a good idea to use them—it might be necessary for your board and could prevent issues like no booting.
Operate the system together. It features 18x 75-amp power sections. The unit may not appear online without both EPS connectors. Look for a compact 850W model with two 8-pin EPS connectors included. Definitely avoid attempting to run the full power unit without it. (This board performs exceptionally well in LN2 conditions!)
I didn’t consider it. I’ll check it out, though it looks like most replies suggest using two connectors.