i have a 1.6A that i pushed to 2.4 on two voltage bumps. i'm not sure what the default volatage is (i think 1.5V?). if thats the case, i used 1.55 volts. see what you can get on stock voltage, then bump it once if you cant get to 2.4, then see how far you can get with that voltage, make sure you monitor your temps aon every bump