4pin not on motherboard

[wingfan1991]

im replacing a power supply on a system and it doesnt have a 4pin only the 20 pin.. the new power supply has both 20 and 4 pin. will using ONLY the 20 pin power up the board not causing any issues? the board is easily 8 years old.

 

[DXRick]

Of course! You just use the 20 pin one.

 

[wingfan1991]

wicked thanks!

 

[photonboy]

Agreed.
The extra 4-pin connector is for newer demands. As you know by now the "24-pin" can split into a 20-pin and 4-pin connector.

I'm not certain but I think the 4-pin connector is for newer CPUs. It's easily googled, but the question has been answered.

 

[badge]

The 20 + 4 pin was needed to supply more 12v ground and source of 12v for modern more power hungry video cards addressing PCIE in particular. OP what DXrick said.

 

[royalcrown]

Pretty sure it was more for the CPU vrms badge, but I may be incorrect,,,

 

[badge]

The 12v into the MB is just that 12v nothing more nothing less. The added 4 pin connector is basically an added ground plus add source of the same 12v power. Whatever you say.

 

[badge]

Doesn't matter and I can't figure out who's replying to the messages here, but "The 4-pins that were added to the 20-pin connector are for the PCI-e graphics slot." (Last post)

 

[badge]

I believe when PCIE took over from AGP, the additional 12v 4 pin was added to the 20pin at that time.