What's up with molex connectors on motherboards?

[Serp86]

Is it to deliver extra power to the board?

Manual Just mentioned PCI-E so it goes to the graphics card, but dont graphics cards already have a power connector on them? so what's the point?

Thanks

 

[Serp86]

*bump

I'm talking about the connector which looks like a hard disk plug just in case somebody is confused

 

[slpaulson]

I think it's for if you are running SLI or Crossfire. Even though the video cards have their own pluggin they apparenltly draw some power from the motherboard. Apparently two cards is a lot for the motherboard to handle, especially if the card is a ways away from the 12V source.

That's my guess anyways.

 

[customcoms]

Its to supply extra power to those beefy GPU's and to keep the PCI-E rails stable especially when running SLI. However, I reconmend plugging in every power connector in even if the manual states "only needed if running dual gpus" or such. Beefy cards require their own dedicated psu connector as well.