[everheardofc]

I used to make a joke that phones will be the future in datacenters because nobody is designing ARM SoCs for servers and those that do made them perform worse than phones.

The paper completely ignores the lack of ECC, hardware reliability and lack of software support. Especially if you consider that the majority of mobile gpus don't stupport opencl or don't even have drivers available for modern kernels. You will need to support your software for each device type or rewrite your software as an android app. But since developer and sysadmin time is far more valuable you're better of just buying an x86 server.