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Thread: 8Pin PCI-E connector

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    Default 8Pin PCI-E connector

    What's a good psu with a couple of these connectors?
    Looking in the 750-900 watt range.
    Or would one of those adapters work on a 6pin pci-e?

    DFILTX38T2R/Q6600.........Rampage Ex/q9650/h2o
    4gig Crucial 6400..............2gigZ Patriot Vipers
    Sapph3870x2/3870...........4870x2+48701gig
    X-Fi Elite Pro.....................H2O cooling
    320/500 Seagate..............WD HDD's
    BFG 800 watt....................Ultra x-3 1000 wattr

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    Default

    What do you need the 8 pin for?

    Most top quality 700W and larger PSUs have at least 1 8 pin PCI-e. I only know of 1 card that uses the 8 pin and thats just to enable extra features on the card. Those features can be unlocked with a simple paper clip mod.

    But here is a great qualtiy 750W unit with the connectors you need.
    http://www.newegg.com/Product/Produc...82E16817139006
    SYSTEM:
    | Opti 165 @ 2.9Ghz 322 FSB 9X Multi. 1292 HTT | DFI Infinity NF4 SLI | 7900GS @ 580/690 |
    | 2 x 1Gb Muskin DDR500 @ 512Mhz 3-3-2-7 | Corsair VX550W |
    COOLING:
    | CM Eclipse | VF-900 | Antec 900 |

    XATE-984 Load Tester Build

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    Default

    I was planning on getting a hd3870x2, which requires a 8pin pci-e and a 6 pin..
    My Silverstone's(zeus 750 and 850) do not have the 8 pin . Total bummer. But at the time who'd thought I'd need one??

    Would one of these adapters do the trick? http://www.performance-pcs.com/catal...ducts_id=21721
    http://www.frozencpu.com/products/60...ter_Cable.html

    DFILTX38T2R/Q6600.........Rampage Ex/q9650/h2o
    4gig Crucial 6400..............2gigZ Patriot Vipers
    Sapph3870x2/3870...........4870x2+48701gig
    X-Fi Elite Pro.....................H2O cooling
    320/500 Seagate..............WD HDD's
    BFG 800 watt....................Ultra x-3 1000 wattr

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    Default

    Yeah those would work fine.
    SYSTEM:
    | Opti 165 @ 2.9Ghz 322 FSB 9X Multi. 1292 HTT | DFI Infinity NF4 SLI | 7900GS @ 580/690 |
    | 2 x 1Gb Muskin DDR500 @ 512Mhz 3-3-2-7 | Corsair VX550W |
    COOLING:
    | CM Eclipse | VF-900 | Antec 900 |

    XATE-984 Load Tester Build

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    Default

    http://www.hardwarecanucks.com/forum...review-13.html
    I plan on oc'ing.. That's why I'm concerned about the power input to the card. If I have to buy a psu also,, I'll put my 450bux to other uses..

    DFILTX38T2R/Q6600.........Rampage Ex/q9650/h2o
    4gig Crucial 6400..............2gigZ Patriot Vipers
    Sapph3870x2/3870...........4870x2+48701gig
    X-Fi Elite Pro.....................H2O cooling
    320/500 Seagate..............WD HDD's
    BFG 800 watt....................Ultra x-3 1000 wattr

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    Default

    Zap
    Clan of the Bloody Fist

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    Default

    Wow. About half the price. Maybe we should raise it!

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    Default

    So judging Jonny's positive reply, these will work as good as the separate 8 pin's?

    DFILTX38T2R/Q6600.........Rampage Ex/q9650/h2o
    4gig Crucial 6400..............2gigZ Patriot Vipers
    Sapph3870x2/3870...........4870x2+48701gig
    X-Fi Elite Pro.....................H2O cooling
    320/500 Seagate..............WD HDD's
    BFG 800 watt....................Ultra x-3 1000 wattr

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    Default

    Technically the 8-pin connector CAN NOT deliver more power, nor should it have to since the card is consuming a good deal less than the capability of the wires and connector.

    8-pin generally has an extra pin on the +12V row to "sense" +12V voltage. If voltage drops due to the resistance caused by too much current, the PSU should be able to compensate and/or the graphics card can "clock down" to lighten the load.

    But I can't think of any 8-pin PCIe connectors that actually USE the +12V sense. Everyone just taps a ground to the +12V sense pin which "fools" the graphics card into thinking that there's a +12V sense wire there.

    The adapter will add resistance, but no more than if you had a modular power supply to begin with. So I wouldn't sweat it.

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    Default

    Everyone missed an important point.... he wants to run two HD3870. Those cards need only a single 6-pin PCIe plug each. The 8-pin PCIe was for the HD29xx series.

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