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Thread: X299 motherboard dual 8-pin

  1. #1
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    X299 motherboard dual 8-pin

    There are two 8pin sockets on Asus Rampage VI Apex.

    1.) Are both of them for CPU?
    2.) Do PSUs provide dual 8pin? If my PSU (Seasonic Focus Plus 650W) does not support it, what can I do?

  2. #2
    Xtreme Addict
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    -both 8pins = more stable power to cpu
    -most enthusiast level PSUs do comes two 8pins, separately from pci-e cables
    [FSB<>BCLK]
    3930k@4.3Ghz 1.30v HT On 24/7 Full load Linx stable/Lapped~1070ti~970evo~Gt110
    R4Gene Modded Bios~Corsair 2x8Gb@2.4Ghz 1.65v C11~AX1200i
    SORRY FOR MY BAD ENGLISH

  3. #3
    Xtreme X.I.P. JPQY's Avatar
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    I have buyed a new Asrock X299 Taichi XE motherboard who has also dual 8-pin
    My power supply is a Antec Signature 850W with one 8-pin connection and 2 pci-e 6+2pin cables
    So i think i can use 8-pin & 6+2-pin cable to power cpu i9 7960X or i9 7980XE

    JP.
    -Core i9 7980XE @4,20Ghz Vcore:1,10V
    -Asrock X299 Taichi XE
    -Custom water-cooling loop
    -16Gb Corsair DDR4 3200Mhz
    -Samsung 970 evo Plus 500Gb
    -Samsung 960 evo 250Gb
    -Samsung 850 evo 500Gb
    -Samsung SH-S223Q
    -Asus RTX 2080 Dual OC
    -Cooler Master HAF 932
    -Seasonic Prime 1300W Gold

    Test results are always welcome with this Chess Test where all your cores/threads will run @100% ,Thanks
    http://www.xtremesystems.org/forums/...=1#post5259523

  4. #4
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    I would recommend googling the pinouts of the PCI-E power connector and the CPU power connector to make sure they are the same voltages and what not, if they are, and don't fit, mod the proper connector on the end of a PCI-E power cable.

  5. #5
    Xtreme X.I.P. JPQY's Avatar
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    I got a reply from Antec!

    Dear Sir,

    Unfortunately, the answer is NO, you CAN NOT use the PCI-E cable for CPU cable, 8p(4+4p) CPU ≠ 8p(6+2p) PCI-E.

    You need to buy one 8pin to 8pin EPS12V or 8pin to 8(4+4)pin ATX12V/EPS12V.
    -Core i9 7980XE @4,20Ghz Vcore:1,10V
    -Asrock X299 Taichi XE
    -Custom water-cooling loop
    -16Gb Corsair DDR4 3200Mhz
    -Samsung 970 evo Plus 500Gb
    -Samsung 960 evo 250Gb
    -Samsung 850 evo 500Gb
    -Samsung SH-S223Q
    -Asus RTX 2080 Dual OC
    -Cooler Master HAF 932
    -Seasonic Prime 1300W Gold

    Test results are always welcome with this Chess Test where all your cores/threads will run @100% ,Thanks
    http://www.xtremesystems.org/forums/...=1#post5259523

  6. #6
    Xtreme X.I.P. JPQY's Avatar
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    My Antec Signature 850W is too old for a i9 7980XE.

    So i have to buy a new power supply..i'm looking around and always come back to these EVGA Supernova 1300 G2 or 1600 G2
    The Corsair AX1200i or AX1500i but high price..
    It has to be a PSU who has 2 x 8pin EPS 12V ..these 4 has that..
    continue searching..

    JP.
    -Core i9 7980XE @4,20Ghz Vcore:1,10V
    -Asrock X299 Taichi XE
    -Custom water-cooling loop
    -16Gb Corsair DDR4 3200Mhz
    -Samsung 970 evo Plus 500Gb
    -Samsung 960 evo 250Gb
    -Samsung 850 evo 500Gb
    -Samsung SH-S223Q
    -Asus RTX 2080 Dual OC
    -Cooler Master HAF 932
    -Seasonic Prime 1300W Gold

    Test results are always welcome with this Chess Test where all your cores/threads will run @100% ,Thanks
    http://www.xtremesystems.org/forums/...=1#post5259523

  7. #7
    Join XS BOINC Team StyM's Avatar
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    Evga 1200w p2

  8. #8
    Xtreme X.I.P. JPQY's Avatar
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    @StyM you prefer a Evga 1200W P2 above Evga 1600W G2 for some reason?!

    Thanks,
    JP.
    -Core i9 7980XE @4,20Ghz Vcore:1,10V
    -Asrock X299 Taichi XE
    -Custom water-cooling loop
    -16Gb Corsair DDR4 3200Mhz
    -Samsung 970 evo Plus 500Gb
    -Samsung 960 evo 250Gb
    -Samsung 850 evo 500Gb
    -Samsung SH-S223Q
    -Asus RTX 2080 Dual OC
    -Cooler Master HAF 932
    -Seasonic Prime 1300W Gold

    Test results are always welcome with this Chess Test where all your cores/threads will run @100% ,Thanks
    http://www.xtremesystems.org/forums/...=1#post5259523

  9. #9
    Xtreme X.I.P. JPQY's Avatar
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    Belgium
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    Have ordered a EVGA Supernova 1600W G2 ,getting in review's even Platinum results!

    JP.
    -Core i9 7980XE @4,20Ghz Vcore:1,10V
    -Asrock X299 Taichi XE
    -Custom water-cooling loop
    -16Gb Corsair DDR4 3200Mhz
    -Samsung 970 evo Plus 500Gb
    -Samsung 960 evo 250Gb
    -Samsung 850 evo 500Gb
    -Samsung SH-S223Q
    -Asus RTX 2080 Dual OC
    -Cooler Master HAF 932
    -Seasonic Prime 1300W Gold

    Test results are always welcome with this Chess Test where all your cores/threads will run @100% ,Thanks
    http://www.xtremesystems.org/forums/...=1#post5259523

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