Not to diminish this feat, but I wonder how the Phoronix benchmarks compare between an ARM cluster and a single x86 chip. Consider the OpenSSL benchmark.
A Sopine A64 compute module costs $29 and performs 15.05 OpenSSL signs / second [0].
An AMD Ryzen 1700 costs ~$300 and performs 986.73 OpenSSL signs / second [1].
So, if you spent $300 on 10 Pine64's, you would achieve approximately 150 signs / second, but for the same cost you could just buy the AMD chip and achieve approximately 6.5x better performance for the dollar.
A Sopine A64 compute module costs $29 and performs 15.05 OpenSSL signs / second [0].
An AMD Ryzen 1700 costs ~$300 and performs 986.73 OpenSSL signs / second [1].
So, if you spent $300 on 10 Pine64's, you would achieve approximately 150 signs / second, but for the same cost you could just buy the AMD chip and achieve approximately 6.5x better performance for the dollar.
[0] https://www.phoronix.com/scan.php?page=article&item=pine-64-...
[1] https://www.phoronix.com/scan.php?page=article&item=amd-ryze...