And this section should be on mining altcoin but hahah is totally fine for me.
First of all and as long as I know that Bitmain Antminer a3 is mining Blake2B algorithm with a maximum hash rate of 815Gh/s not a scrypt algorithm, Dogecoin is using Scrypt algorithm same as litecoin and the most profitable miner as for now is Bitmain Antminer L7 9500Mh according to
https://whattomine.com/asics