Batch 8

Speed:    4.73TH/S
Weight:    4.5 kg
Price:       4.73 BTC  ( 1792.2 USD )

Batch  7 Speed:    5.06TH/S
Weight:    4.5 kg
Price:       5.06 BTC
               ( 1917.23 USD )



So am I right in thinking all doing to get better results is tweak the clock speeds however how did they produce 5TH in Batch 7? and now looking at batch 8 is faster memery speed used but less hash output that dont make sense.

Would like to buy but still at the prices maybe S8 will be less in cost or will have a better ratio at power used.