|Processor||1 GHz ARM 7100|
Bitmain Antminer R4 ~8TH/s at 0.1 W/GH Quiet Home Bitcoin Miner
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- Hash Rate: 8.7 TH/s (within 10 percent)
- Built-in web management portal. Separate host computer NOT required
- Power Consumption: 870W (within 9 percent) at the wall (with Bitmain's APW5 PSU)
- Extremely Quiet (52dB at an ambient temp of 35C)
- Power supply sold separately. APW5 PSU recommended
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Hash Rate: 8.7TH/s (variation of 10 percent is expected). Power Consumption: 870W (withing 9 percent) at the wall (with Bitmain's APW5 PSU, 93 percent efficiency, 25C ambient temp). Power Efficiency: 0.1 J/GH at the wall (with Bitmain's APW5 PSU). Noise level: ~52dB. Chip quantity per unit: 126 x BM1387. Rated Voltage: 11.60 ~13.00V. Product size: 515mm (L) x 100mm (W) x 222mm (H). Package size: 610mm (L) x 215mm (W) x 340mm (H). Operating Temperature: 0C to 40C. Network Connection: Ethernet (cable not included). Notes: 1. Each AntMiner R4 has six 6-pin PCI-e connectors for 12V/15A DC STABLE input on hash boards and one additional 6-pin PCI-e connector on the controller. All SEVEN 6-pin PCI-e connectors are required. Do not connect more than one PSU to the same hash board to prevent possible damage and instability. 2. Power consumption figures will vary with your PSU's efficiency, the ambient operating temperature and the accuracy of the power meter. 3. Power supply unit is not included. Bitmain recommends the APW5 power supply for the R4.
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My "new" unit ran straight out of the box, it had been well run in prior to shipping judging from the amount of dust and dirt on the heatsinks. I'd guess that it will pa for itself in a year or so.