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Is ATX12v2 4 Pin is enough ?

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bpostaci View Drop Down

Joined: 12 Feb 2021
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    Posted: 12 Feb 2021 at 5:37pm

I have Asrock z490m-pro4 main board where it has or 4pin ATX12v2 and 8pin ATX12v1 CPU power slots.

My PSU has 300w and have only 4pin cpu socket, (the psu is out of the box included in my mAtx slim case.)
I have facing difficulties to find a higher psu to fit for that slim case.

According to my power calculation 300w is enough.

-Can i use this configuration only 4pin cpu socket via "ATX12v2" (8pin is not connected) ?

-What if i can use one of the free mulex output with using an adapter cable/socket to create another 4pin cpu socket and combine them together with orginal 4pin from PSU socket to create a new 8 PIN one and plug into 8pin slot of the motherboard "ATX12v1" ? Can it be doable ?

No Graphics card.

CPU i7-10700 65w (I am not planning any overclock)
16GB Corsair dd4 8x2 16MB
2 PCIE Quad eth card Intel (max 20watt)
1 PCIE Double sfp card Intel x520-da2 (max 13watt)
M2 500GB Samsung EVO

OS: FreeBSD Linux.

Thanks in advance.

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RLGL View Drop Down

Joined: 29 Jul 2018
Location: MN
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RLGL Quote  Post ReplyReply Direct Link To This Post Posted: 13 Feb 2021 at 1:49am
There is a reason for the power connector configuration. Simply put the board needs all of them. Why spend the money for a good board and cheap out on the PS. There is a good chance the board will fail early with the connfig as described.
Asrock Z370 Gaming K6,Intel i7 8700K,
Asrock x570 Taichi

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