Hi..Newbie in da house..
I do wunder about Oc alot cause in my S3 i did oc and...well nothing happend :O The Gh/s is pretty much the same.. Even when did all by as you in here has wrote about the freq and so 250 as it is at the top.. Nothing.. One S3 showing Freq of 231.25 :O BUT with no Hw error.. running (30min) Why no speeding ticket's?? Has any else see this?
Yes. It's possible to not see an improvement at higher clock speeds. Sometimes you may even see a decline in hash rate at higher clock speeds. You should test various clock speeds to see which performs best over at least an hour period. Once you find that sweet spot, stick with it. Ideally, you want the highest hash rate and the lowest possible clock speed with the fewest hardware errors. That will save you on electricity!