Thanks. Keep us posted on overclock to other setting. I'm happy with current overclock setting but if it can get more hashing with stability of overclocking beyond 225, I would like that. I only have one S4 so I want to keep mining without experimenting like I did with S1s or S3s.
That's about the max you can do with the stock psu.
Althought I have tried going up to 231.25 at 0726 and it was stable. But I'm using 220/240 circuits so it's pulling less amps.