BitMain has started selling the AntMiner U3 Bitcoin ASIC miner again with a slightly different design than the original first batch, other than that the specifications remain pretty much the same (with some minor differences in cited power usage). The new AntMiner U3 Batch 2 is available with a minimum order quantity of 20 units at a price of 38 USD (0.185 BTC) and the Batch 3 is with a minimum order quantity of just 5 units available at a price of 39 USD (0.19 BTC). The BitMain AntMiner U3 ASIC miners provide 63 GHS at about 60W with 1 Watt per GHS in the new specifications that are published by BitMain with a low noise level.
BitMain AntMiner U3 Specifications:
– Max Hash Rate: 63 GH/s ±5%
– Power Efficiency: 1Watt/GH/s on wall at 0.83V
– Voltage: DC 12V input, 6A
– Chip Quantity per unit: 4
– One 80mm fan
– Noise: ~25 DB at 25 °C ambient temperature
– Hashrate and VDD core voltage can be adjusted via cgminer command line
– USB connection
– 12V AC/DC power brick of 6A, but power line not included
– Certificate Compliance: FCC/CE
BitMain has these miners available for home users that want to have access to affordable priced and silent Bitcoin ASIC miners that want to play with them just for hobby, they are not designed to ROI due to their lower hashrate and not so great power efficiency. Since they are running batch 2 and 3 this means that there is interest in these little devices from users, though you probably would want to get a single unit to play with it and not buy a minimum of 5 or 20 units. This means that most end users will probably not be interested in directly buying AntMiner U3 from BitMain, but will look for some company reselling these at a single piece quantities.
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