The AvalonMiner 821 is a huge improvement on its predecessor, containing 104 A3210 16nm chips, giving it a reliable hash rate of over 20% better than that of the AvalonMiner 761.
The 821 also has a power efficiency of 0.109 Joules per Gigahash, which is about 10% less than the Antminer S9 (at just under 0.098). As the hash rate is also lower than that of the S9, your decision on whether to choose the AvalonMiner 821 will probably revolve around price considerations.
At the time of writing, Avalon has announced the 821 on its page and is offering the device for sale in bulk quantities. The listed price above is for 1/60 of the minimum order quantity of 60 units, so will likely increase over time. Avalon’s official redistributor BlokForge has also listed the AvalonMiner 821 for sale in individual units, but the price is still to be confirmed.
Just as with its predecessor, you need to purchase a PSU separately which should cost around $200. Buyers will also be able to cluster-mine by connecting up to five 821’s to Avalon’s AUC3 controller, increasing hash power considerably.
- Cost: $2,540
- Power usage: 1,200W
- Hash power: 11 TH/s
- Daily profit: 0.00143233 BTC