Mining difficulty will go up by 22%. What is you plan to do with 741? 
741 seems outdated for me, even thought I am sitting on free socket.
741 seems outdated for me, even thought I am sitting on free socket.How do you figure? They hash at 7.5 and are a little more than half the cost of an ant miner at 14.
I own one and like it. I don't have personal experience with ant miners but I hear the Avalons are a lot more reliable.