You can calculate yourself the efficiency of scrypt ASICs vs CPU mining based on published performance numbers. For an explanation of the many reasons why this

You can calculate yourself the efficiency of scrypt ASICs vs CPU mining based on published performance numbers. For an explanation of the many reasons why this is the case, here's two starting points for that rabbit hole: https://www.reddit.com/r/Bitcoin/comments/3n5nws/research_paper_asymmetric_proofofwork_based_on/ https://www.reddit.com/r/Bitcoin/comments/3n5nws/research_pa... https://crypto.stackexchange.com/questions/29890/memory-hard-proof-of-work-are-they-asic-resistant https://crypto.stackexchange.com/questions/29890/memory-hard...