The Sierra is a powerful commercial grade bitcoin mining machine, powered by three (3) of HashFast’s Golden Nonce (GN) ASICs.
- Contains 3 HashFast Golden Nonce (GN) ASICs
- Performance: 1,200 Ghash/s at nominal clock speed. (That’s 1.2 Thash/s in one mining unit.)
- At the wall, this unit consumes 1 watt per gigahash +/- 20%
- Chassis: 4U rack mounted
- Cooling System: High performance liquid cooling on each of 3 chips, dissipates heat via front mounted radiators
- 2 High performance Seasonic power supplies
- Connects via USB to a computer of your choice running cgminer (a “control unit”, see below)
Recommended Control Unit
- Any Linux** PC (desktop, laptop, or rack-mounted server), with the following:
- 1G RAM, 500GB or larger disk, at least one USB port, paired with one or more USB hubs
- I.e., most any computer that can run CGMiner
- Needs an ethernet port to connect to the internet
- Needs one USB port per Sierra
- Purchase 10 Sierras and HashFast will include a free 1U rack mounted control unit
- 28nm ASIC
- Each GN ASIC performs 400 Ghash/s at nominal clock speed
- Power Consumption at the chip: less than 0.65 W/GH/s +/- 20%
- Designed to be underclocked for greater efficiency, and overclocked for greater performance*
- Die has built in thermal controls that allow the chip to pushed to the edge without damaging cores.
- Prices are listed in USD.
- Payment is to be made in BTC online, or via wire transfers (USD).
- Direct BTC Transfers utilize the exchange rate posted on bitstamp.net.
- To pay in USD via wire, please email us at [email protected], or call us at 800-609-3445, during pacific standard business hours.
- A full payment must be received to complete and reserve an order. A partial payment does not reserve a place in line. Wire payments can take up to 7 days to confirm.
- All Sales Final. No cancellations or returns will be accepted.
- Machines are shipped in the same order payment was received. Orders placed today are guaranteed to ship by March 31, 2014.
- If we are able to secure cheaper shipping rates than those published on our site, we will refund the difference back to our customers.
** USB is a standard protocol. An OSX or Windows box running CGMiner will probably work fine as a control unit. But we are doing our development work on Linux boxes, and so we recommend using a Linux box for your controller.