Yawn. Miners this efficient were available over 8 months ago.
I don't understand why Bitmain would waste time and money updating the S4. What a waste.
Exactly. Why . Why. Why! Because their new stuff won't be available till mid/end summer. Bitmain milk it for all you can. The specs just aren't there. Should have been sold has kit. Notice I didn't say uprade kit.
Once again we don't need more miners or even better miners. We need higher btc prices.