6 Gigabyte GeForce GTX 1070 with 1200W EVGA 1200W 2P PSU wont even start. 4 cards max

PatriccioPatriccio Member Posts: 5
Hey everyone!

Im new to mining so there's so I'm sure I'm missing something.
I have next rig:
1) ASROCK **Z170 EXTREME4 LGA1151 Motherboard
2) GEIL 4GB 1X4 D4 2400 C16 RAM
3) 6 Gigabyte GeForce GTX 1070
4) EVGA 1200W 2P PSU
5) PCI-E 16x to 1x Powered Riser Adapter Card w/ 50cm USB 3.0 - 6 Risers
6) INTEL PENTIUM G4400 processor

We were able to build 4 GPUs rig and it works just fine but when I add at least one more 1070 it wont even start. I can hear that PSU starts to work but just for a second, then shuts down and wont work until I remove 5th 1070 card. I read a lot of threads and saw people were using 1200W for 6 GPU rigs with no problems. Hope you guys will guide me in a right direction. Thank you!

Comments

  • on_the_waveon_the_wave MelbourneMember Posts: 4
    I had similar problem on GTX 1070 with Asrock Z270.

    Mod the BIOS, Set PCIe to Gen1 and enable 4G

    Disable unused ports / slots, etc.

    Reinstall latest GPU drivers.

    Might help, but I have read of issues with 6 cards on that MOBO.

    Good luck
  • mitsakos156mitsakos156 Member Posts: 11
    edited June 2017
    Sorry to hijack your thread. But would a 1200 psu suffice when a single gpu use max 150 +75 watt from mobo 225watt per card. That means 1350 watt 6 gpu's. How is 1200watt for 6 cards ok?
  • PatriccioPatriccio Member Posts: 5
    You are right probably. I will try to use 1600 PSU for it.
  • ciprianptciprianpt Member Posts: 219 ✭✭
    edited October 2017

    I had similar problem on GTX 1070 with Asrock Z270.

    Mod the BIOS, Set PCIe to Gen1 and enable 4G

    Disable unused ports / slots, etc.

    Reinstall latest GPU drivers.

    Might help, but I have read of issues with 6 cards on that MOBO.

    Good luck

    Nvidia no need bios edit :)

    @Patriccio have you tried enabling 4G decode ?

    I made a similar rig with 1151 motherboard from gigabyte, the D3A one. I had problems with the 6th card and what i did to fix it was

    Change “Max Link Speed” setting from “Auto” to “Gen2”
    Change “Initial Display Output” setting from “PCIe 1 Slot" to “IGFX”
    Change “Above 4G Decoding” setting from “Disabled" to “Enabled”
    Change “Internal Graphics” setting from “Auto” to “Enabled”(Chipset)

    If that doesnt work use UEFI mode to install your OS

    here is the rig http://1stminingrig.com/nvidia-gigabyte-geforce-gtx-1070-g1-gaming-mining-rig-tutorial/
  • dampi0dampi0 Member Posts: 12
    edited October 2017
    Patriccio said:

    Hey everyone!

    Im new to mining so there's so I'm sure I'm missing something.
    I have next rig:
    1) ASROCK **Z170 EXTREME4 LGA1151 Motherboard
    2) GEIL 4GB 1X4 D4 2400 C16 RAM
    3) 6 Gigabyte GeForce GTX 1070
    4) EVGA 1200W 2P PSU
    5) PCI-E 16x to 1x Powered Riser Adapter Card w/ 50cm USB 3.0 - 6 Risers
    6) INTEL PENTIUM G4400 processor

    We were able to build 4 GPUs rig and it works just fine but when I add at least one more 1070 it wont even start. I can hear that PSU starts to work but just for a second, then shuts down and wont work until I remove 5th 1070 card. I read a lot of threads and saw people were using 1200W for 6 GPU rigs with no problems. Hope you guys will guide me in a right direction. Thank you!



    Your PSU is not sufficient. I have the same setup like you and with underpowering my GPUs, my RIG is at 1100 watt consumption. Initially I bought 1600W PSU. The maximum power consumption for one gtx1070 is 200W, for IDLE use it is around 150-170. You also have 100W consumption for the CPU and the motherboard.

    You should definitely buy another PSU. Until this is done, remove a few GPU cards, decrease the power consumption to minus 20-30% , and then plug in your other GPUs. Also, pay attention whether you have a gold or platinum psu and calculate your exact raw power consumption which your PSU can handle. Also buy a WATT meter for proper measuring.
  • amkoamko Member Posts: 17
    @damp: Nope.

    Modify the cards carefully, then you get 31,5-32 mh/s @ ~110w.

    Im am running 5x1070 + 3x1060 with a 1000w PSU just fine.
    Consumption from the cards is ~800w.
  • dampi0dampi0 Member Posts: 12
    amko said:

    @damp: Nope.

    Modify the cards carefully, then you get 31,5-32 mh/s @ ~110w.

    Im am running 5x1070 + 3x1060 with a 1000w PSU just fine.
    Consumption from the cards is ~800w.

    My bad is that I forgot to mention that I dual mine. Otherwise if the OP is only mining etherium only , he should have less power consumption. Although different models 1070s vary in it.
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