20 Pin Psu To 24 Pin Motherboard


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Ok im getting a MSI K8N Neo4-F Socket 939 NVIDIA nForce4 ATX AMD Motherboard and it has a 24 Pin connector and the PSU has only a 20 Pin connection does the motherboard need the other 4 Pins?

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pretty sure the answer is no(doesn't need the other four pins) but you might wait for a confirmation from a more knowledgeable member..

also..can the connection be physically made..?? if so.. it'll probably work..if not..probably not.. :blink:

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Ok im getting a MSI K8N Neo4-F Socket 939 NVIDIA nForce4 ATX AMD Motherboard and it has a 24 Pin connector and the PSU has only a 20 Pin connection does the motherboard need the other 4 Pins?

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define need?

All the power and ground busses (except the dedicated CPU connector's) are common, you don't loose the ability to power certain slots or devices by not having a 24 pin main connector.

However, the extra pins are not there purely for show. Each PCIe x16 slot is designed to deliver up to 5.5A @12V. And another signifigant amount (about 3.5A) @ 3.3V.

The added pins are designed to share that increased load (partiuclarly the load at 12V as a 20 pin connector has only a signle 12V return line).

General rule:

low power system, no problem.

decent gaming machine, should be ok with a good PSU.

Top of the line, high speed, high power desktop, you're spending some major cash already, do it right and buy the correct PSU.

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Ok I think this psu supports a 24 motherboard it has the 20pin connection then it has 4 extra plugpic

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No. That extra 4-pin isn't for the motherboard power slot. That's to supply power for a P4 processor.

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...and plugging it into a 24-pin ATX connector is a Very Bad Idea. Just to be absolutely clear.

FWIW, it's used by processors other than the P4, including Athlon 64s and some Athlon XP motherboards.

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...and plugging it into a 24-pin ATX connector is a Very Bad Idea.  Just to be absolutely clear.

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fortunately the CPU connector and the other 4 pins are keyed differently.

It would take a rather large hammer to get the CPU connector to fit.

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I know more than a few people that would reach for that hammer with disturbingly little hesitation...

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The best advice I can give you is to get the correct powersupply for your motherboard.

Although most of these are keyed so that you can put a 20 pin in only one way, I have heard of people doing this and the motherboard smoking and dieing and taking everything with it when they power up.

http://www.msicomputer.com/product/p_spec....Neo4-F&class=mb

Normally , other than some Compaqs, this 24 pin is for PCI express boards.

By not using the correct power supply , or at least an adapter designed to meet the requirements, you are going to over draw current on some of the 20 traces which are connected and risk burning something out.

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