On June 23rd, 2017 Obelisk announced plans to release a siacoin miner, the SC1 and pre-sold units to the public. The Obelisk SC1 was pre-sold for $2499 a miner and aimed to provide 100 GH/s for 500W of power by June 2018. Many miners were pre-sold, and we at the Miners’ Union spoke to them about making some room in our mines for the forthcoming SC1s (and later DCR1s) which we happily agreed to. Not long into development, in January Bitmain abruptly released their own siacoin miner, the Antminer A3. This miner used 1275W for 815 GH/s. Bitmain then proceeded to drown the market in A3s such that even the more efficient miner had a significantly depressed daily reward.
While initially very profitable, the A3 is now a tool of ardent siacoin supporters. It is the world’s most efficient Siacoin miner given the lack of SC1s in the wild. If demand for Blake2b increases, an Antminer A3 is currently your best bet to capitalize.
For a current profitability estimate be sure to check out our mining calculator.
At 1275W, the Antminer A3 is an ideal choice for colocation. This unit performs optimally when using 208, 220 or 240V power sources which are often difficult or impossible to find at residential locations. The miner produces a lot of heat so it is best run in a location with a managed climate.
Bitmain is the leading manufacturer of cryptocurrency mining ASICs. A privately held company headquartered in Beijing, China. Bitmain was founded by Micree Zhan, the first to translate the Bitcoin white-paper into Chinese, and Jihan Wu, the current CEO in 2013.
Bitmain attained early success with the release of the Antminer S5 ad subsequent Antminer S7 which were the miner of choice in the era preceding 2016. The Antminer A3 is the current siacoin miner of choice for the current mining era (2016-2018). It is estimated that Bitmain made $4B over this period.
They also maintain the Antpool mining pool which is one of the largest pools on several cryptocurrency networks. Bitmain mines extensively with their own equipment and pools.
The Antminer A3
- Power Consumption: 1275W
- Hashrate: 815 GH/s
- Efficiency: 1.56 W/GH
- Probability of Delivery: Confirmed Real
If you do decide to purchase an Antminer A3, we hope that you’ll consider the Miners’ Union for your colocation needs!