20-pin to 24-pin power adapter necessary?
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20-pin to 24-pin power adapter necessary?
My new motherboard is on the way, and I've discovered that not only do I not have any power supplies that have a 24-pin connector, but the motherboard is not coming with one either.
From what I understand, isn't the 24 pin connector just the regular 20-pin connector with the 4-pin ATX power connector tacked on the end?? If that's true, do I really need an ADAPTER? Or can I just connect the two seperate plugs into the 24-pin connector on the motherboard? I may have to shave some plastic off the connectors so they fit close, but is that all?
From what I understand, isn't the 24 pin connector just the regular 20-pin connector with the 4-pin ATX power connector tacked on the end?? If that's true, do I really need an ADAPTER? Or can I just connect the two seperate plugs into the 24-pin connector on the motherboard? I may have to shave some plastic off the connectors so they fit close, but is that all?
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Re: 20-pin to 24-pin power adapter necessary?
No, although the extra 4 wires on the 24 pin connector carry 12V lines, they aren't the same configuration as the 4 pin 12V connector. You won't be able to connect the two connectors to the 24 pin on the motherboard, and shouldn't even if you were able to.sundevil_1997 wrote:From what I understand, isn't the 24 pin connector just the regular 20-pin connector with the 4-pin ATX power connector tacked on the end?? If that's true, do I really need an ADAPTER? Or can I just connect the two seperate plugs into the 24-pin connector on the motherboard? I may have to shave some plastic off the connectors so they fit close, but is that all?
As far as needing the converter, some people have had success with just plugging in the 20 pin into the 24 pin on the motherboard and leaving the 4 pins open. Some motherboards work fine, some are unstable, and some don't post. It's worth trying before you invest in an adapter, but the converter will almost certainly give you more stability and room to overclock.
Re: 20-pin to 24-pin power adapter necessary?
Nope, the four added pins are +12, +5, +3.3 and ground. They were added to support PCI Express, power supplies with the 24-pin ATX power cable still has a 4-pin +12V power cable but it has a separate current limit.sundevil_1997 wrote:From what I understand, isn't the 24 pin connector just the regular 20-pin connector with the 4-pin ATX power connector tacked on the end??
Some Intel boards.. and others I would imagine.. have the 2x2-12v and a molex for older PSUs.
Intel Desktop Board D925XECV2
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Intel Desktop Board D925XECV2
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So to piggy-back on this thread, I bought a Seasonic PSU to power my P4 2.4 machine with an ASUS P4S8X motherboard. It turns out my mobo only has 20 pins, while the PSU has 24. This is the opposite situation as the original poster. Do I need to purchase an adapter, or can I just plug the 24-pin PSU into the 20 pin slot on the mobo, letting the bottom 4 pins from the PSU hang free?
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The 2 X 2 that disconnected from the other 20 pins is NOT the same as the 2 X 2 ATX12V power connector. Yet another brilliant stroke of confusion and ambiguity by PSU and motherboard manufacturers.....Smithore wrote:Oh god, I'm such a newb! Yes, the 4 pins slide off the end, and I assume that 2x2 plugs into the other ATX power slot on the mobo somewhere? Wow, I suck.
Like Tephras states.. the 20+4 (2x2 main connector) is different than the 2x2-12v auxillary connector. That one should be on a long lead by itself. The connector is to the lower left of the CPU socket in the picture. There appears to be a molex connector too.
P4S8X 12v aux connectors
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P4S8X 12v aux connectors
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