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Video card power requirment (using half a 4 pin molex?)

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  • Components
  • Graphics Cards
  • Power
Last response: in Components
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February 26, 2014 7:49:47 PM

I have 2 r9 270x's and unfortunately have to use 4 pin Molex adapters for one of the cards. I have one card running from 2 6 pin power connectors but I can't find all of the cables from my psu (full modular) so I have to use the molex adapters (because I found those). Each molex to 6 pin has 2, 4 pin molex to one 6 pin pin but i only have three molex adapters in total, so i was wondering if i could use the proper 2 molex's to 1 6 pin on one and only one of the molex's to 6 pin on the other or if that would use too much power from the one molex and fry it. thanks for any help.

More about : video card power requirment half pin molex

February 26, 2014 8:02:25 PM

Uses 2- 4 pin peripheral power cables to one, 6 pin 12v pcie power cable, but if I only use of the 4 pin peripheral power cables could it fry that cable by using too much power?
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a b U Graphics card
February 26, 2014 8:11:17 PM

Molex has 5 amps on the 12 volt line = 60 watts

6 pin pci-e = 75 watts

8 pin pci-e = 150 watts
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February 26, 2014 8:11:28 PM

Uses 2- 4 pin peripheral power cables to one, 6 pin 12v pcie power cable, but if I only use of the 4 pin peripheral power cables could it fry that cable by using too much power?
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February 26, 2014 8:12:29 PM

Sorry i accidently reposted that
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February 26, 2014 8:13:15 PM

So it will still work just at a lower wattage?
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a b U Graphics card
February 26, 2014 8:29:43 PM

If the graphics card is designed with a particular connector you should have at least that wattage available
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February 26, 2014 8:32:50 PM

When I just had one it gave me the option to go to 20 percent above the Normal power limit, should I just take 20 watts away from the max power it thinks it can use so it would theoretically never use the extra 15 watts?
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