The released technical brief says "SHA256, used in Bitcoin, has a number of technical shortcomings due to its Merkle–Damga ̊rd construction. These vulnerabilities led to the SHA3 competition for a new hash function based on a different fundamen- tal construction. Decred has chosen BLAKE256 as its hash function, a finalist for the competition . The hash function is based around a HAIFA construction that incorporates a variation of the ChaCha stream cipher by Bernstein. The hash function is notable for its high performance on x86-64 microarchitecture, being faster for short messages than SHA256  despite being considered to have a much higher security margin at 14-rounds. " How much faster (hash rate per watt) compared to GPUs can ASICs become when this hash function has high performance on ordinary x86-64? I guess that it's inevitable that ASICs will be faster than our ordinary GPUs, but will it become pointless to be mining using your ordinary GPU, just like it's for SHA256?