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Do I NEED to plug in the molex connector to the motherboard?

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  • Motherboards
  • Platinum
  • MSI
Last response: in Motherboards
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a b V Motherboard
August 20, 2009 9:05:17 PM

I have a msi p45 platinum that has a molex connector on the motherboard. As far as I can tell, it's for cards that get their power through the board, not a on-card connector. I have 2 4870s in crossfire, each card is plugged into a separate 12v rail. Do I need to plug in the molex connector, or is it good without?

Thanks

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a b V Motherboard
August 20, 2009 11:33:18 PM

The molex connector is to help supply the power (75w each) to the video cards through the PCI-E sockets. It DOES NOT replace nor is it made useless by plugging the additional power into the back of the cards. Use it because you have more than one video card in your system. That's what it's there for. Not all motherboards have this feature/requirement, but yours does. So does the Gigabyte board that I have. Rails are irrelevant. Do you have an extra molex connector available?
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a b V Motherboard
August 21, 2009 4:29:51 PM

Yep. And I connected it last night to see what would happen. Seems no different. Thanks for the info
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