Posts Tagged ‘Bitmaintech’

Bitmain Antminer C1 is a New 1 THS Water Cooled Bitcoin ASIC Miner

25, Oct 2014

bitmain-antminer-c1

Bitmain Antminer C1 is a new interesting offer coming from Bitmaintech, a 1000 GHS Bitcoin ASIC miner with water cooling. The new Antminer C1 ASIC miner comes in a kind of DIY form as Bitmain is only selling the mining unit with integrated water block for the ASIC chips, the rest of the cooling you need to buy separately and install yourself. The Antminer C1 miner is being sold for 1 BTC or $349.34 USD at the moment and you can buy a ready kit with the rest of the water cooling components for extra $50 USD or use your own components to complete the cooling solution of the miner. The C1 miner is offering 1000 GHS hashrate with a power consumption of about 800W according to the specifications quoted by the manufacturer and you will have a bit more power usage for the additional fans and the water pump for the water cooling part.

bitmain-antminer-c1-complete

The new Bitmain Antminer C1 Bitcoin ASIC miner with water cooling should offer a quieter operation, making it suitable for use by home miners and with the winter coming this could turn out to be a nice combination of quiet device that provides you with a heating for the winter. The drawback with the Antminer C1 using this approach for water cooling is that it may not be suitable for everyone, especially people with no experience in water cooling solutions for computers, even though the suggested ANT C1 kit should be easy to install. The miner does not come ready to be used and you need to buy extra hardware form a separate supplier, a decent and cheap choice apparently offered as an option, or use more expensive and serious PC water cooling components to make the miner operational.

– For more information about the Bitmain C1 water cooled Bitcoin ASIC miner…

BitMain AntMiner U3 Bitcoin ASIC Miner for Home Miners

23, Oct 2014

bitmain-antminer-u3-usb-asic-miner

BitMain has revealed a new 63 GHS AntMiner U3 SHA-256 ASIC miner designed for home users as the successor of the previously available USB stick miners that the company offered. The device is apparently made for home users that do not want serious noise levels or high power usage. It is more of an interesting and affordable device for users that are new to ASICs or just for a fun “toy”, don’t expect the U3 USB miner to actually make you some serious profit or something like that. The Antminer U3 is based on four BM1382 ASIC chips resulting in 63 GHS worth of hashrate and is priced at $56 USD per unit or 0.151 BTC at the moment (without shipping). The AntMiner U3 USB miners (connected to a PC via USB, not powered by USB) should start shipping on November 5th, or with other words less than 2 weeks from now. There is however a catch, if you want to order the BitMain AntMiner U3 directly from the manufacturer you will not be able to get a single unit, the minimum order quantity is 20 units. So this kind of defeats the purpose of directly ordering it from BitMain if you are an end user, but we are probably going to see some of BitMain’s partners also offering the miner for people that might be interested in purchasing single units.


BitMain AntMiner U3 ASIC Miner Specifications:

– Hash Rate: 63 GH/s at 0.75V
– Power Efficiency: 0.8 Watt/GH/s on wall at 0.75V
– 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

Note that the noise level of these should be pretty low indeed at just about 25 Decibels, there is no exact power usage quoted, but it should be less than 70W which the supplied power adapter is apparently capable of as maximum. With the cited power usage of 0.8W per GHS the actual power usage should be close to about 50 Watts for the whole unit or maybe slightly more. The devices should be overclockable apparently through the cgminer command line, so there should be some headroom for increasing their hashrate with the expense of a bit more power usage. Again do note that these miners are low hashrate and low powers, designed to be silent and used by home miners just for fun and not as a means to make profit as they many not even be able to get you a return of investment in the foreseeable future.

– For more information about the BitMain AntMiner U3 Bitcoin ASIC miner…

Hashnest with New Lower Price and Our First Impressions

2, Sep 2014

hashnest-current-price-hashrate

Yesterday we’ve told you about the new announcement coming from Bitmain about their acquisition of the Snowbal.io service that is now called Hashnest and about their plan to start selling cloud mining hashrate via the new platform. They have already started selling the initial offering of 4 Petahashes worth of hashrate powered by AntMiner Bitcoin ASIC miners today and we have already purchased 100 GHS to try out the service. Initially the price per GHS was supposed to be 0.0016 BTC, but it has apparently been lowered to 0.00135 BTC making the offer more attractive even though the maintenance fee is still at about 37 percent which is a bit higher than we would want to see it. But since the maintenance fee is quoted in USD per GHS with increase of the Bitcoin price the fee percentage should get down to a more acceptable level. With the new price per GHS and the current maintenance fee with a more moderate 10% average increase of the Bitcoin network hashrate you can expect to see a ROI in less than 8 months, not that great, but not too bad either, especially compared to some other recently launched alternatives that we’ve covered. So while not great profitability wise, that offer does not seem that bad either compared to many of the available alternatives and even compared to the initially announced higher price per GHS. The hashrate you purchase will be valid and mining for as long as the mined coins are more than the fees collected by the service, so the downside could be if the hashrate you purchase becomes unprofitable in less than 8 months.

hashnest-100-ghs-status-table

We have purchased 100 GHS for 0.135 BTC just to test out the service and to give out some firsthand experience. It seems that Hashnest does need to do some more translation in English and improve the translation of some of the already translated in English texts. Also the statistics you get is not very detailed and the graphs for the hashrate are not for your own hashrate, but for the overall hashrate of the cloud mining contracts offered through the platform from the provider UMISOO. So currently the Miner Status page is not very informative apart from the data in the table you get about your purchased hashrate and the “Unassigned Earnings” which apparently is the amount you have mined so far. Other than that you should know that in order to purchase Bitcoin mining hashrate from Hashnest you should first deposit Bitcoins in your account and then you can pay with them for hashrate. The confirmation of the transaction and the availability of the Bitcoins in your account is pretty fast and after you have them in your balance the purchase and allocation of the paid hashrate apparently happens instantly. We’ll see how the service will continue to evolve, but it seems that it needs some work on the user stats for the new cloud mining functionality and the rest is apparently already working quite well.


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