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20-pin psu on a 24-pin atx connector mobo?
- Thread starter DamienKC
- Start date
- Joined
- Jan 12, 2001
- Location
- Kansas, USA
Yes it will work. The instruction manual shows how to plug it in. Basically you leave 4 pins unplugged.
- Joined
- Oct 1, 2004
For a very small amount of money, you can buy an adapter to convert from a 20 pin plug to 24 pin board. I'd imagine that those extra power legs are there for a reason.
- Joined
- May 31, 2004
MikeyLikesItSI said:
yep, that's what i did for my system.
- Joined
- Nov 8, 2004
MikeyLikesItSI said:
the power adapters they sale for this are not worth the $6 they sell for, all they do is arrange your 20 pin connector for you, which you could do by just plugging the connector all the way towards the bottom of socket.
there are no extra wires on the adapter connecters they sell ! and the extra 4 wires on the 24-pin p/s is for extra power to the pci-express bus.
- Joined
- May 31, 2004
Scream'n'Demon said:
is there anything wrong with paying for $6 to increase power to the pci-e bus?
- Joined
- Oct 1, 2004
I beg to differ. My DFI 875P-T board is a 775 socket on a 875 chipset. No PCI-e, but still has the 24 pin connector. I didn't try to start the board up with the four pins open. I hacked apart an old ATX connector and took the pins i needed and spliced it into the main connector. I wanted to play it safe and purchased the necessary adapter anyway. Either way, those pins are there for a reason, and are integrated and utilized by the motherboard. i would NOT suggest running the computer with those open pins unless the mobo manufacturer states that it is completely harmless.
- Joined
- Oct 1, 2004
Good luck then. i hope you are successful! 
- Joined
- Jan 12, 2001
- Location
- Kansas, USA
You might want to read this page.
http://www.hardocp.com/article.html?art=NjQwLDM=
Basically, the extra four pins of the 24-pin connector powers the PCI-E slot. You might experience instability at high overclocks without those pins connected. The article had problems even with an adapter.
http://www.hardocp.com/article.html?art=NjQwLDM=
Basically, the extra four pins of the 24-pin connector powers the PCI-E slot. You might experience instability at high overclocks without those pins connected. The article had problems even with an adapter.
- Joined
- Jul 17, 2002
- Location
- In a Room Heated by Electronics
so what if im using an agp based 775 MB like mine... kind of pointless to give those pins power then i suppose.
- Joined
- Jul 17, 2002
- Location
- In a Room Heated by Electronics
just to let people know,,, the extra 4 pins may be used by some manufactures for thinks other then pci-x...(like an Agp / pci based board with the 24 pin connector) I have one such example here: http://www.ocforums.com/showthread.php?p=3965037#post3965037 If you must use a 20 pin PS Do your self a favor and get the adapter... it is only $8
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