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pcie 2.0 & pcie 6 or 8 pin power connector

Last response: in Graphics & Displays
April 29, 2008 12:39:36 PM

Since pcie 2.0 boards are supposed capable of delivering 300w to a x16 pcie2.0 slot, I don't really understand why a geforce 9800gx2 needs both a 6 and 8 pin power connector, or any other of the pcie 2.0 cards need any auxiliary power connectors for that matter - are they optional, and only needed on pcie 1.1 boards ? or are they mandatory, even if you have an x48 or 790i board?
April 29, 2008 1:47:29 PM

dunno,... maybe because it doesn't work if you don't ;-)
April 29, 2008 2:53:09 PM

so you say, you're 100% it will not work without the connectors attached? or are you simply guessing?
And if they don't work, I wonder why not, cause after all the pcie slot should be able to provide more than sufficient power to feed even the fiercest card on the marked.
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April 29, 2008 3:02:09 PM

they may have 2 connectors to support backwards compatability
it will work in a PCIE16 v1 slot after all... and it doesn't supply as much power as the PCIE16 v2 spec.
April 29, 2008 3:45:02 PM

I was just guessing, why else would they say you need it?
April 30, 2008 7:52:07 AM

okay, but the real question is, if it will operate normally without those two attached, in a pcie 2.0 capable motherboard? or if it'll squeak in that highpitch noise all genforce boards do when there's a problem with the auxiliary power? Anyone tried it? (I don't own a pcie 2.0 board or card, so I can't)