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Is the 4-pin Molex connecter above the PCIE slots mandatory for multi-gpu's?

post #1 of 12
Thread Starter 
I have mine plugged in at the moment, but is it necessary? If so, what are the benefits? Is it for 3 GPU's? Im using 2 and wondering cuz if not i'll unplug it, it ruins my wiring lol
post #2 of 12
Its for using hungry GPUs and multi-gpu's, on CF of SLI setups you shouldn't need that, but when you start getting into 3 and 4 way setups, the PCIE slots can't provide enough clean power and need a bit more via that molex -
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post #3 of 12
Edit: Nvm
post #4 of 12
Thread Starter 
Quote:
Originally Posted by appleg33k85 View Post
Its for using hungry GPUs and multi-gpu's, on CF of SLI setups you shouldn't need that, but when you start getting into 3 and 4 way setups, the PCIE slots can't provide enough clean power and need a bit more via that molex -
So its safe to unplug it?
post #5 of 12
Why would you do that?
The card is going to need/use the same amount of power no matter where it gets it from.
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post #6 of 12
cards can pull max of 75w each from the SLOTs. that plug is required for 4-way, but not for 3-way.
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post #7 of 12
Quote:
Originally Posted by billbartuska View Post
Why would you do that?
The card is going to need/use the same amount of power no matter where it gets it from.
prob because the location of the 4 pin molex on these motherboards are in the most moronic place for those who care about wiring.
Normally located right behind the I/O ports.
post #8 of 12
Quote:
Originally Posted by azianai View Post
prob because the location of the 4 pin molex on these motherboards are in the most moronic place for those who care about wiring.
Normally located right behind the I/O ports.
right next to the FRONT audio pins on the BACK of the mother board.

I never pluged these cables in, but I've never used more than two GPUs at a time.
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post #9 of 12
As said, it makes sure your cards have enough power. Unplug it, if it is stable, keep it unplugged, if not, then keep it plugged in. More than likely, you won't need it.
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post #10 of 12
I've run 6 gpu's on a Biostar board without having to plug that thing in so take that how you will.

If you have issues running without it plugged in then by all means see if it helps anything, but it is likely you can run just fine without having to use it
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Overclock.net › Forums › Intel › Intel Motherboards › Is the 4-pin Molex connecter above the PCIE slots mandatory for multi-gpu's?