Does anyone happen to know what the wattage usage is of the S3 at each frequency? I'd like to put together a web form that takes the current Bitcoin price and the price you pay for electricity and then figures out what frequency would be best in terms of efficiency. I could hook the units up to a watt meter and figure this out myself, but was curious if anyone had already done it and can save me the trouble? (Or if there is a defined ratio, I could use that as well I guess.)
I'll make the site public and then potentially add other miners to it if they offer the same ability to change wattage/frequency and I have access to the numbers. Maybe I'll call it Intelihash. Haha...
While I applaud your idea, and willingness to share with the community, you still have more to consider.
The problem is, there are other variables. PSU quality/80Plus rating, 120v vs 240v, even the quality of power from your power company has some effect on the # of watts at the wall. Not to mention, these S3's tend to vary all over the +/-5% manufacturer's acceptable tolerance range. Much more so than the old S1's anyway.
But here, I'll share what I have. 2xB1 S3's clocked at 225mhz averaging 455GH each on a single EVGA 1300G2 (80Plus Gold) pulled about 720W from the wall. Right in line with what most people are reporting for 225mhz on gold rated PSU's.