8 pin + 4 pin CPU

[NoQU4RT3R]

Hello, I recently upgraded my PC with a costume side panel. I reused a lot from my old PC.

Old pc:

-AMD FX-8320

-MSI 970 Gaming motherboard

-16GB DDR3

-Geforce GTX 1070

-SSD to boot from /HDD Storage.

 

New PC:

-Ryzen 9 3900x

-ASRock x570 Tacichi

-32 GB DDR4

-Geforce GTX 1070

-Corsair Force MP600 M.2 2280 1TB PCI-Express Gen 4.0

 

Everything came together and works perfectly. My question is "should i use both 8 pin and 4 pin on the CPU for power? I am currently only using the 8 pin and everything is running as expected. Just curious because its the first motherboard i've owned with more then just a 4 pin for CPU power.

 

Thank you.

[Lurick]

The 8-pin is all you need unless you either need:

1. Extra stable power delivery because the current 8-pin is acting weird or some other anomaly which the extra 4-pin can help out with in certain situations.

2. Super high end LN2 overclocking power where you need the extra power the 4-pin provides.

[Haro]

3 minutes ago, NoQU4RT3R said:

should i use both 8 pin and 4 pin on the CPU for power? 

A single 8 pin eps can hold up to 384w so your good unless your ln2 ocing or something

[Fluvous]

The extra connector is meant for overclocking typically. The 3900x does draw a fair bit of power however, so if you have the extra cable it wouldn't hurt to add it.

[NoQU4RT3R]

Thanks Lurick, TofuHaroto and Fluvous. with those tips ill keep it as is until i purchase a new heat sink. My old watercooler didnt have the proper mounts for AM4 and had a leak. 

Or the next time in in the pc ill clean up the cables a bit and add that 4 pin. if its safe then why not eh.

[Mateyyy]

As mentioned above, for any AM4 chip currently released you won't need more than a single 8-pin unless you plan on doing subzero overclocking.

 

If your PSU has the extra EPS cable and don't mind doing another run from the PSU all the way to the motherboard, by all means you can connect it; it won't hurt anything, but it won't necessarily help either.