Hi,
This looks interesting, but I don't think it will be able to compete with the Avalon ASIC. The 64 cores are certainly nice, but a single Avalon ASIC can do 275 Mhash/s.
Even if each Epiphany-IV core can produce one full hash every 640 clock cycles, it will only generate 80 Mhash/s. I'm more of an FPGA/ASIC person, so I'm basing the 640 clock cycles on 10 clocks per individual SHA256, and 64 rounds per hash, which might even be low.
I think it is hard to compete with the Avalon ASIC custom chip, which was custom designed for mining.
Regards,
Pat
Think you might be a bit wrong on some info the butterfly labs chips are the only ones designed from the ground up to be bitcoin mining chips the ASIC ones are just off the shelf ones (hence the reason theres so many on each board)