What happens if coins move to ethash-like algorithms where the efficiency gains would be alot smaller?
Thats the nature of crypto, you have to decide what risks and opportunities are right for you. Currently what Im proposing plays well in the acceleration role with GPUs for those algorithms. In 9-12 months both FPGAs and GPUs will be shipping with similar memory bandwidth and then FPGAs (imho) will be winning on power.
Next gen Radeon Vega is rumored to have up to 1.28 Terabyte/s mem bandwith. IS there any FPGA (or announced) that would pull the same kind of perf ?