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Kncminer jupiterbitcoin miner 500ghs 28nm asic chipsunboxing and setup 1080p
Bitmine is a Swiss company that has proved its competency doing Avalon clones and has now announced its own processor called Coincraft, a 28nm chip designed to for low-power operation so more of them can be used at once. As is the industry norm, it is late.
Bitmine was supposed to get chips back in November and ship hardware in December, but only received chips on the last day of the year. It has shown working hardware using test boards but not shippable product, although final kit is now expected to ship in March. A three-month delay is hugely significant in the Bitcoin world. Bitmine has announced Coincraft Desk which is a desktop unit, and Coincraft Rig, a 4U rack-mounted unit.
This is controlled by a Raspberry Pi which one expert feels might work for a few cards but might not be fast enough for ten. They estimate that an over-clock to 2. A V power supply is included, but US household circuits are typically not capable of delivering 3kW through a single power supply. BlackArrow is a Chinese company which has moved on from an FPGA based on public domain designs to its own chip which shows a history of competence.
The short Chinese supply chain is a huge benefit. It has announced a 20nm chip, Minion, but has not taped out yet so is currently selling systems with the Bitfury chip on board. This is specced at 1. But this is all modelled rather than measured. It claims out-of-the-box functionality with a web interface, and that it is both silent and low power. If you have some spare rack space this might be the one to go for. Until recently, ButterFly was the company that had shipped the most hardware and made the most money, though now it has been overtaken by KnC.
This is not a scam company despite, and it says a lot about the Bitcoin hardware market that this is one of the more respectable companies around. Its reputation, however, stinks. It has announced a 28nm chip called Monarch, which is due imminently. The power is PCIe and does not use the bus rails.
Still if you want something you can sneak into the PC under your desk at work and steal electricity from your employer it has a stealth advantage. Of all the Bitcoin companies, CoinTerra is the one with the most chip design experience. A mobile processor needs to balance three things: For Bitcoin mining only the first two matter, but mobile experience is invaluable and most of the CoinTerra team have worked in mobile.
The company taped out on 9 November and got wafers back on 28 December - an incredibly fast turn around guaranteed by paying expedite fees to Global Foundries in Dresden Germany - and then shipped to Taiwan for packaging. Its reputation is good on the basis of keeping customers up to date, although is has not shipped anything. Engineering updates come thick and fast. It seems to be on target to ship this month. Bitcoin processors often ship with some hashing units failing in the manufacturing process.
The chip has four dies. The chip will go into the TerraMiner range of products, most of which have been discontinued: The 4U box has two power supplies of 1. This seems to be the best thought-through of the devices here, particularly if you have some rack space looking for something to fill it. Hashfast is a very aggressive company in possession of advanced technology and a legal team. It designed and taped out its chip very quickly. Its warranties are short too: Many rivals offer 90 days to lifetime coverage.
Hashfast promised and charged for an 20 October delivery, and while it contracted to deliver by 31 December, it is yet unclear how many machines went out on that date. It may have just made the deadline, but has also offered to issue refunds. Customers who paid in Bitcoin were promised on the Bitcointalk forum that if Hashfast had to issue refunds, it would do so in Bitcoin. However, as the contract said refunds would be in dollars, it is now only offering that currency.
The specs are as impressive as the name is dumb: Hashfast also claims the lowest power consumption in the industry: The latter is rated at 1. This Register list of products may be in alphabetical order and not worst to best, but KnCminer is the last on the list and significantly the best. It is good at customer relations and amazingly it under-promises and over-delivers.
It even has a website which works well. The hardware is based on a processor designed by the Brobdingnagian Marcus Erlandsson, co-founder and boss of the ORSoC half of the company. More coins are currently being mined using KnCminer than with any other hardware.
Bitcoin mining is hard. Ignoring the software side, protecting wallets and the like, some of the people advertising kit are charlatans. CoinTerra and KnCminer are two such paragons. Generally the idea of plug and play is laughable. Some experience of overclocking PCs, Linux, using a Raspberry Pi and network admin goes a long way and customer support comes from forums and communities rather than from the person you bought the kit from. Or you could just invest in Bitcoins.
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