"If I dial back the clock to 200m I get 1.05 GH/w at an average of 400 GH/s.

If I dial the clock back to 175m I get 1.17 GH/w at an average of 340 GH/s.

That doesn't make any sense !

Stock clock will give you 440 GH/s at 350 W which is  0.79 W per Gh/s.

That's what I get on my S3's from Batch 1

Bob