Pentium4 mobos without 4pin ATX - 12v or 5v? \ VOGONS

Pentium4 mobos without 4pin ATX - 12v or 5v?

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First post, by kolderman

Posted on 2025-08-09, 23:18

kolderman Offline

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Do the vrms draw 5v like AXP, or do they still take 12v but from 20pin connector?

Reply 1 of 4, by Archer57

Posted on 2025-08-09, 23:49

Archer57 Offline

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Usually no extra connector means 5v, there is only one 12V pin in 20pin ATX connector, that is not enough to power 60-100W CPU.

You can figure it out with reasonable degree of certainty by looking at VRM input capacitors - if they are something like 16V it is likely to be 12V, if 10V or lower it has to be 5V...

Reply 2 of 4, by kolderman

Posted on 2025-08-10, 01:41

kolderman Offline

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Says 6.3v so I guess that answers it...

Reply 3 of 4, by dionb

Posted on 2025-08-10, 10:49

dionb Offline

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Out of interest: what motherboard is this? No ATX12V sounds pretty unusual.

Reply 4 of 4, by kolderman

Posted on 2025-08-10, 12:32

kolderman Offline

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ECS P4VXAD

And it is unusual. Only one I have seen like it.

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