Skip to content


  1. Giedrius
    May 13, 2017 @ 12:48 pm

    Thank You very much for information in your website and Youtube. Really, most important crypto news are collected and shared here.


    • Rolf
      May 14, 2017 @ 9:27 am

      Thank you!


  2. Paul
    May 26, 2017 @ 7:20 pm

    Agreed – Rolf you are quite an awesome guy! Thank you for sharing all this info. Some would seem greedy and now willing to share their wisdom – but…to the contrary – you are most inspiring!

    Thank you and best wishes to your continued success!


    • Paul
      May 26, 2017 @ 7:21 pm

      Sorry…Typo – now = not


      • Rolf
        June 24, 2017 @ 6:15 pm

        Thanks Paul!


  3. Tony
    June 17, 2017 @ 2:11 pm

    Very interested to learn more about your HVAC setup, thanks Rolf!


    • Rolf
      June 24, 2017 @ 6:16 pm

      The basics are move lots of air. I like to use about 250-300 CFM per miner as a rule of thumb. And use filtered intake fans to reduce the dust on the machines.


  4. paul stevens
    August 15, 2017 @ 4:42 pm

    I have 5 Biostar TB250-BTC 6.x mobo’s i’ve assembled with 1300w evga psu’s. I have 24x RX480’s and 6x gtx 1070’s on hand to install. I have lost countless days trying several bios versions, dozens and dozens of bios adjustments/changes, multiple O.S. installs… please help I will pay a good coin to get these all running. I have already paid and upgraded my breakers, wiring and outlets to accommodate. I can only get up to 5 gpu’s showing in bios and in Win10 Device Manager, or GPUz, but even that’s been rare. Trust that I have installed in uefi only mode, set above 4g decoding enabled, tried pci set to Gen1, Gen2, and Auto, I disabled onboard graphics, audio, VM support, etc! I also removed the custom gpu bios I modded on 6 of the RX480, back to stock bios as I was having issues installing drivers on more than 1 card. Please help I will pay good coin! Greenville, SC


  5. Rolf
    August 15, 2017 @ 7:05 pm

    Paul, I am going to ask one of my fellow miners, initials JG, to reach out to you. He is an experienced GPU miner and may have time to assist.


    • paul stevens
      August 15, 2017 @ 7:27 pm

      You are the best!!! I would be so thankful of you, and JG. Everyday I’m not mining becomes more and more frustrating after so many nights troubleshooting and reconfiguring my setup. I did save bothering anyone as my absolute last resort!


      • Jay
        August 15, 2017 @ 11:27 pm

        Paul, Shoot me an email tomorrow and lets see if we can get on the phone.


        • Rolf
          August 28, 2017 @ 12:59 pm

          Jay, thanks for helping Paul out!


  6. Fahed Zarzour
    August 26, 2017 @ 4:17 pm

    Very good work
    You are the best …
    I will travel to Canada after two months and i want to order some antminers from bitmain company :

    – Antminer S9 (50)
    – Antminer D3 (5)
    – Antminer L3+ (5)

    I have been watched all your videos on Blockoperation channel especial ( Data Networking for Medium Size Bitcoin Mining Operations ) ,But off course i need more advises and information about this medium size bitcoin mining :

    1 – How mush air flow i must prepare ?
    2 – How can i dispose of moisture ( humidity in the air ) ?
    3 – What actually space i need ?
    4 – What is internet speed i need ?
    5 – Do i need VPN ?
    Best Regards


    • Rolf
      August 28, 2017 @ 12:51 pm

      I like the profitability of the L3+ much more than S9 right now. If you can buy them, get 50 L3+ instead of S9. I don’t worry about moisture in the air, it has not been a problem yet, and it is humid here in Georgia. You should plan about 300 Cubic Feet per minute of airflow per miner, and a way to prevent hot air from recirculating from the exchaust of the miner to the intake.

      You don’t need much space, but it will be noisy. Internet can be about 1.5 Mbps, but it must be reliable with low latency. You don’t need a VPN…but I like having a VPN built into the network firewall for remote work.


      • Fahed Zarzour
        August 30, 2017 @ 4:48 am

        If you can give me your E-mail or any thing you want because i want to share information and photos of my project with you
        Thanks for helping …


  7. BIGmike
    October 14, 2017 @ 9:48 pm

    Dude, serious this is awesome


  8. BIGmike
    October 14, 2017 @ 9:49 pm

    Do you have more pics of the setup above?


    • Rolf
      October 16, 2017 @ 4:14 pm

      I do – probably the best is a video that I did on my youtube channel – I am doing an expansion right now and am taking pictures as I go. Right now I have about 170 miners in this building and should be at 350-400 in 2-3 months.


  9. John
    November 2, 2017 @ 12:19 pm

    Wonderful stuff Rolf, thank you. You mention preferring the prospects for L3+ over the S9. I will look on the site to see if you have commented on this but I am curious if you have a brief explanation? Also, you mention your ramp up schedule now that your infrastructure is in place. It seems to me acquiring the hardware, at least Bitmain units (from Bitmain, at “reasonable” prices), is one of the most challenging hurdles. Any advice on purchasing Bitmain hardware or recommendations on other vendors? Thanks.


  10. Hozefa
    April 25, 2018 @ 8:34 am

    Hi Paul,

    I have been starting a small bitcoin farm of 100 machines. While scaling it I have a faced a particular challenge on the Antminers with an issue of Connection Socket Error on various models.

    This goes away almost always by itself after resetting the machines. Wanted to check if you faced any such problem during your setup.



Leave a Reply

Your email address will not be published. Required fields are marked *