Monero RandomX rig with 4x Ryzen 3900x CPUs (Work in Progress)

Hash Rate on Benchmark (RandomX) is 11,850 per CPU. That will be about 47,400 hash for the entire rig running 880 watts. To get the hash rate up above 8,000 you need 4 memory sticks and to enable large pages in windows.

Parts List:
4 x Veddha V3C 8-GPU Mining Case Aluminum Stackable Mining Rig Open Air Frame Case with Fan Mount 4 x $35
1 – CKLau 4Kx2K Ultra HD 4 Port HDMI Cables KVM Switch Control 4 Computers $90
1 – AmazonBasics High-Speed HDMI Cable, 3 Feet, 3-Pack $10
1 – Besgoods USB to USB Cable Cord, 2-Pack 3FT/1M Braided USB 3.0 Type A Male to Male Cable $9
1 – Linksys 5-Port Gigabit Ethernet Switch (SE3005) $39
1 – Cat 6 Ethernet Cable 1.5ft (6 Pack) $9

INDIVIDUAL CPUS ($1039 per CPU and board)
1 – AMD RYZEN 9 3900X 12-Core 3.8 GHz (4.6 GHz Max Boost) Socket AM4 105W 100-100000023BOX $511
1 – ASUS ROG Crosshair VII HERO (X470 Chipset) $180
1 – MSI Gaming GeForce GT 710 1GB GDRR3 64-bit HDCP Support DirectX 12 OpenGL 4.5 Heat Sink Low Profile Graphics Card $40
2 – CORSAIR VENGEANCELPX16GB (2x 8GB) DDR4 3600(PC4-28800) C18 1.35V 2 x $99 (4 sticks total)
1 – WD Blue SN500 250GB NVMe Internal SSD – Gen3 PCIe, M.2 2280, 3D NAND – WDS250G1B0C $54
1 – EVGA 500 W1, 80+ WHITE 500W, 3 Year Warranty, Power Supply 100-W1-0500-KR, Black $56
2 – ARCTIC F12 PWM PST – 120 mm Fan 2 x $9


Update the BIOS on the mother board before trying to start. The mother board will not boot with the 3900X without a BIOS update.
1) Copy the Firmware to a USB. It must be empty.
2) Rename the Firmware to C7H.CAP
3) Turn off the power. You use the 120V switch.
4) Plug in the USB to the port labeled BIOS on the bottom left
5) Plug in the power supply. But, keep the mother board off. The heat sink light will flash.
6) Wait a few minute and then press the BIOS button on the back for 3 seconds. The button should start flashing.
7) The button then should flash much faster for about 5 minutes. If LED goes solid on it is an error. Restart the power and restart the flashing.
8) The button LED should eventually turn off.

BIOS Setup
1) Just run the EZ Tuning Wizard at the Top.
2) Choose box fan on the left
3) Choose office computer
4) Click Run.
5) After Boot Up, use Ryzen Master to load the custom Profile 1.
6) To prevent Q-Code 1F, turn off fast boot in the Boot menu.

Put Batch File in Startup Folder to Run Miner Automatically.
1) Press Windows key and R
2) Run shell:startup
3) Put the file to run the miner in the Starup Folder

Windows Settings
1) Have password autoload
2) Have monitor never turn off
3) Have computer never sleep
4) Set Power Setting to High Performance
5) Update Advanced Options:
Check Recive updates on other microsoft products.
Check Restart Device as soon as possible.

Enable Large Page Support in Windows 10.
1) From the Start menu, open Local Security Policy (under Administrative Tools).
2) Under Local PoliciesUser Rights Assignment, double click the Lock Pages in Memory setting.
3) Click Add User or Group and type your Windows user name.
4) Either log off and then log back in or restart your computer – unfortunately it won’t work without this step.

Install AMD Ryzen Master from AMD website

In Ryzen Master
1) Use the Profile 1.
2) Set Memory Clock to 1800 Mhz
3) Set Fabric Clock to 1800 Mhz
4) CPU Core Speed to 3.9Ghz
5) CPU voltage slightly over 1.2V Use the saved Profile.

Go to the ASUS Motherboard website and download and install.
1) Utilities
2) Chipset

Post Author: CoinCryptoNews