Amazon.com: Dell T7810 “Chia Farming” Workstation/Server, 2X Intel Xeon E5-2690 v4 up to 3.5GHz (28 Cores & 56 Threads Total), 128GB DDR4, Quadro K620 2GB Graphics Card, No HDD, No Operating System (
Amazon.com: High End Z840 Workstation, 2X E5-2690 v4 up to 3.5GHz (28 Cores Total), 256GB RAM, 4X 1TB SSD, Quadro P4000 8GB (4X Display Port), USB 3.0, Windows 10 Professional 64-bit (Renewed) : Electronics