The Antminer S7 has about 33% of the hashing power of the s9 (it runs at 4.73 TH/s) but if you buy 3 used ones it will probably cost less. Seeing as most people will probably rush to buy the new Antminer s9 you may want to consider getting the older model (Antminer s7) at a discounted price due to lower demand. You may want to consider getting a bunch of S7s instead of one Antminer S9 It probably won’t cost much more than any other old PSU you can find. However if you don’t already own a compatible PSU it will probably be best to just buy the APW3-12-1600-B2 and add it to your initial investment cost. For example the EVGA SuperNOVA 1300 Watt GPU PSU should also work with this miner. If you own a PSU of an old Bitcoin miner you might be able to use that as well. Here’s how to set the miner up with the power supply (notice how loud the miner gets once you operate it): Bitmain (Antminer’s manufacturer) recommends using APW3-12-1600-B2 which can be found on their website, on Amazon or on eBay at different price points as well. So whenever you purchase an Antminer keep in mind that you will need to spend and additional $150 on a PSU. The Antminer s9 can’t just be plugged into the wall, it needs a PSU (power supply unit). You need an additional PSU to run the Antminer s9 10 months is a long time in the Bitcoin universe and a lot can change – mining difficulty can rise, exchange rate will fluctuate and all of these make it hard to predict how long will it actually take to break even in this investment. In order to break even with your investment you will need to mine for about 10 month taking into account an average electricity cost of $0.1/KW. This is the most expensive miner on the market today because its superior mining abilities. On Amazon you can find it for as little as $2700 and on eBay you can get it for as little as $2000 (so that’s probably the best place to look). On Bitmain’s site you can buy it for $2400 or at a similar price on Coinminer. The price of the Antmier s9 varies a lot. The Antminer s9 is the most expensive miner on the market If you add into account electricity cost as well you will generate a little less than that – around 0.33BTC. This means that it wastes the least amount of energy than all other miners out there. The Antminer S9 is also the most efficient miner on the market. Around $330 a month of pure revenue (at today’s exchange rate this equals around 0.5 BTC). I ran the numbers against 3 different Bitcoin mining calculators and they all show the same result. This is of course only revenue and not taking into account the electricity, mining pool fees, or hardware expenses. The Antminer s9 has a hash rate of 12.93TH/s -+ 7% (and not 14 TH/s as advertised sometimes), which means that it can generate around 0.5 Bitcoins every month. The Antminer s9 the most powerful miner available on the market So I decided to sum up all of the pros and cons into one simple review – here it is before you… 6 things you need to know before buying an Antminer s9 1. Many reviews praise the product while others have their doubts. The Antminer s9 seems to be to only Bitcoin miner still able to create a somewhat positive ROI in today’s environment. However not too long ago the most powerful and efficient miner to date was introduced – The Antminer s9. With the ever increasing difficulty to mine Bitcoins it gets harder and harder to actually make a profit as a Bitcoin miner.
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