Shandong China Coal Group
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AntMiner S4 SPEC:
* Chip Operating Voltage: 0.72V
* Chip Quantity per unit: 160
* Hash Rate: 2,000GH/s guaranteed
* Power Efficiency: 0.69Watt/GH/s at the wall
* Over clocking: About 10%, but not guaranteed
* 3U Rack 432mm*442mm*133mm
* PSU inside: 1400W, 80PLUS gold, C14 input socket. Power line not included. You may look for one line with no less than 16A in your local market
chinacoal05
* Temperature: 40-50 degree Celsius tested in the mining farm
* Fan Speed: 3900RPM
* Stable but a little bit noisy
* Ethernet connection, Stand alone