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Multiple 6 GPU Setup and load calculations help

Discussion in 'Crypto Currency & Mining' started by meredec, 17 Jan 2018.

  1. meredec

    Associate

    Joined: 17 Jan 2018

    Posts: 2

    Hi

    This is my first rig and I have done quite a bit of research.

    I intend to build a 6 GPU rig using RX570s and another using 1070s. And if I can perhaps a third one..

    This is the wiring plan

    [​IMG]


    The PSUs are EVGA 1300W (slave) and EVGA 1600W (main) fully modular platinum rated.

    Risers are 6 pin or MOLEX powered (no chain, only single molex)

    Wattage estimate for MOBO+CPU etc = 200W
    Wattage estimate per card/riser combo = 250W/ea

    Total Wattage at wall estimate per rig inc. 10% contingency = [200 + 6(250)] = 1870W
    Single socket MAX = 13A*230V = 2990W

    This means 1 rig per each socket max load would be <65%


    Now my questions:

    Assuming the ring system in the house is 32A so max W are 32A*230V = 7360W

    Am I safe plugging 3x 6GPU rigs for a MAX total of 5700W so a load of about 80%?



    Should I get smaller PSUs?
    Any recommendation?


    I am a newbie so please be kind :)
     
  2. 200sols

    Mobster

    Joined: 14 Jan 2018

    Posts: 4,875

    Location: Hampshire

    My 1070tis only pull 130w each, a single 1200w PSU should easily power that rig. Use 8pin PCiE splitters and power the card + riser together from the same cable.
     
  3. Karateyid

    Mobster

    Joined: 20 Jun 2011

    Posts: 2,583

    Just a standard y splitter?? 6pin to 6+2 pin x2?
     
  4. 200sols

    Mobster

    Joined: 14 Jan 2018

    Posts: 4,875

    Location: Hampshire

    8pin to 6+2 pin x 2.
     
  5. Karateyid

    Mobster

    Joined: 20 Jun 2011

    Posts: 2,583

    Ah ok. Cheers will grab some for my rig as wanted to power card n riser from same pci if posdible
     
  6. mattyg

    Sgarrista

    Joined: 17 Jun 2007

    Posts: 7,751

    8x 580's pulling 830w odd at the wall
     
  7. meredec

    Associate

    Joined: 17 Jan 2018

    Posts: 2

    Thanks peeps

    Will of course run the numbers with the Watt meter

    But in theory, for the circuit in the home, it is safe to load overall at 80% max?
     
  8. 200sols

    Mobster

    Joined: 14 Jan 2018

    Posts: 4,875

    Location: Hampshire

    Yes, I assume it is RCD protected. But be wary of anything else on the circuit that uses a lot of power. If your house has two rings, just split between them.