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PSU connections to Asus Z790 motherboard for CPU powers

BILL72
Level 7

My Asus z790 motherboard has 2 cables from the mobo that are four pins each but the connections both have four pins so is it good to put one of each onto one connector each? I tried putting them both into the ATX 1 connector but they would not connect all the way so I put one ach into the ATX connectors but I am not sure if this correct? my previous X99 Asus board had one connection so this is really confusing???Two four pin connectors next to one another and i put the split connectors so each one has a connector plugged into it on the right side so is this okay or am I doing something wrong???

 

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1 REPLY 1

cekeu
Level 12

What happens if you only connect 4 pins?

It starts: Most motherboards accept a 4-pin connector in an 8-pin socket (it inserts on one side, usually the left).

Power limitation: The CPU will not receive its full intended current. This may be sufficient for an entry-level/mid-range processor or if you are not using its full power.

Risks: Under heavy load (gaming, 3D rendering, demanding calculations), the PC may become unstable, restart, or even damage the power supply in the long term.

Best practices
Always use a full 8-pin connector if your power supply offers one.

If your PSU only has a 4-pin connector:

Check the motherboard manual to see if it is officially supported.

Avoid overclocking and heavy loads.

For a high-end CPU, consider upgrading your power supply to a proper 8-pin EPS cable.

👉 In short: yes, it works with a 4-pin connector, but it's a temporary fix. To fully utilize your processor and ensure stability, it's best to use a dedicated 8-pin connector.