[merry]

A friend purchased Gigabyte mobo - the GA-K8NMF-9. The dealer site (just as Gigabyte themselves) lists the board as ATX. But the mobo has a 24 pin connector... The ATX standard specifies a 20 pin connector.

Fortunately the manual includes a table of the connector signals - basically you can connect your 20 pin ATX PSU connector such as pin 1 connects to pin 1 in the mobo "ATX" connector. The signals appear to be identical with the BTX specs, except for the legacy -5V pin (not connected).

24 pin connector power supplies being unavailable where I'm from, could someone please confirm (from experience) that this is correct, i.e. using a 20 pin PSU pin1 to pin1 will work (or at least won't destry the mobo)?

Links:
http://www.giga-byte.com.tw/MotherBo...GA-K8NMF-9.htm
http://pinouts.ru/data/atxpower_pinout.shtml
http://pinouts.ru/data/btx_mbpower_pinout.shtml

[The_Neon_Cowboy]

The ATX 2.01 standard has 24 pins, basically it allows for you PSU to have
2 12 volt rails (I'm not going into dtail). Allows for alot of 12V power my 450W
ATX has 22A and my 450 ATX2 16A+17A =33A. Some mother boards will state
in thier manual if they will still allow you to use the STD 20 pin ATX connector,
but some boards do not....

[PandaZ3]

I don't think you will hurt the Mobo as in burning it up, but it does use 24 pins fo better power distribution. That is what a Mobo does among others right? So you might hurt the performance of the board, or it may not give enough power to some component. Kinda like Neon Cowboy says, it is unclear.

I bet even in Romania they have some 24 Pin PSUs... somewhere.

[soloz2]

no, you should be alright. The extra 4 pins are for 12v power so by using a 20pin psu on a 24pin mobo you may be underpowering your components.

there is an alternative, you can purchase a 20 to 24pin converter. While it is not as good as a native 24pin psu it is better than leaving the extra 4 pins blank (although this will work)

I'm not sure what Gigabyte's stance is, but according to Asus if you only have a 20 pin psu and a 24pin mobo your psu needs to be at least 500w

[H3X4D3C1M4L]

The extra pins are for 12V power to the PCI-e bus so as long as the GFX cards have their own plugs it should theoretically be fine

[The_Neon_Cowboy]

Originally Posted by soloz2

no, you should be alright. The extra 4 pins are for 12v power so by using a 20pin psu on a 24pin mobo you may be underpowering your components.

there is an alternative, you can purchase a 20 to 24pin converter. While it is not as good as a native 24pin psu it is better than leaving the extra 4 pins blank (although this will work)

I'm not sure what Gigabyte's stance is, but according to Asus if you only have a 20 pin psu and a 24pin mobo your psu needs to be at least 500w

alot of board board don't require the 24 pin type , you just have
to check the motherboard manual...

the 20-24 pin adapter does nothing really to help your situation unless
you have a board that explicitly requires the 24 pin connector. When you
use it will be really hard on your PSU. so if you go thats route make sure
you have a good quailty PSU.

I used an adaptor on my rosewill for a while will my psu fan starts @ full speed then runs a tad louder. I just upgraded to a ATX 2.01 version thier not bad for $35

The thing about ATX 2.01 is the seprate 12V line "for you motherboard"
as in there are two seprate 12vot riails. IE my rosewill 450W supplies just
22A 12V but my rosewill atx 2.01 supplies
12v1/12v2
16A/17A
respectively thus a total of 33A 12V is available....


a bit noiseier....