Ethereum sapphire graphics card miner

1. Do you still want to mine now? The calculation mainly comes from the graphics card. The others don't need to be good. The a-card of the graphics card needs to give the n-card good. There are 629 pieces of i34170, 39 pieces of ice radiator, ASUS b85m-g, 419 pieces, Weigang 8g1600, Weilong, 210 pieces, Seagate 1TB hard disk, 288 pieces, sapphire r9390.4g, 2299 pieces, Hangjia WD500 rated 500W, 299 pieces, and the chassis is free

2.

Hello, according to my experience, 1. First set up the rack, then fix the graphics card, and then plug the CPU and fan, memory, SSD hard disk into the slot of the motherboard, and connect the power supply and motherboard power supply

I hope my suggestions can help you, thank you

3.

1. Power consumption: 243w; Calculation force: 22.4m; Price: 1999 yuan; The number of eth g every 24 hours: 0.015; Revenue generated every 24 hours: 24.8 yuan; Expected payback time: 81.66 days

2. Power consumption of the whole machine: 159w; Calculation force: 24.3m; Price: 1599 yuan; Number of eth g every 24 hours: 0.017; Revenue generated every 24 hours: 27.9 yuan; Expected payback time: 57.31 days

3. Power consumption: 171w; Calculation force: 24.4m; Revenue generated every 24 hours: 27.87 yuan; Expected payback time: 71.73 days

4. Power consumption: 97W; Calculation force: 9.2; Price: 999 yuan; Number of eth g every 24 hours: 0.006; Revenue generated every 24 hours: 10.09 yuan; Expected payback time: 99.1 days

extended data

mining machine risk

1. The problem of electricity charge

in order to make the graphics card full load for a long time, the power consumption will be quite high, and the electricity charge will be higher and higher. Many professional mines at home and abroad are operated in areas with extremely low electricity charges, such as hydropower stations, while more users can only mine at home or in ordinary mines, so the electricity charges are not cheap. Even in a certain residential area in Yunnan, there was a case of crazy mining, which led to a large area trip of the residential area, and the transformer was burned

2. Hardware expenditure

mining is actually a competition of performance and equipment. Some mining machines are composed of more such graphics card arrays. With dozens or even hundreds of graphics cards, the cost of hardware and other costs is very high, and there is a considerable expenditure in mining

3, currency security

the withdrawal of bitcoin requires hundreds of keys, and most people will record this long string of numbers on the computer, but the frequent problems such as hard disk damage will make the key permanently lost, which also leads to the loss of bitcoin

4. thirty

5. On August 2, 2017, viabtc g out the first block larger than 1m in history, from which bitcoin split into two chains: BTC and BCC. In essence, BCC is a new currency proced by the implementation of uahf, which is also in line with the original intention of Nakamoto
BCC is the network fork of bitcoin
in fact, BCC is the network fork of bitcoin, which is an incorrect interpretation. Bitcoin's network is stable, and there is no fork at all. BCC is internationally defined as a new currency by ing bitcoin blockchain and changing certain codes. Moreover, BCC does not meet the definition of bitcoin network bifurcation, because BTC and BCC are two completely different chains< As like as two peas as like as two peas, the br / > bitcoin network information can not be synchronized in a chain, and there are two (multiple) identical bitcoin block chain networks. Two networks have a large number of miners digging, and transactions on two different networks can not be synchronized. This leads to two even the same difficulty of two parallel chains, which is called forking.
the problem of developer centralization
bitcoin once led to a three-year expansion battle e to the problem of developer centralization, which made the bitcoin community restless. As the twin brother of bitcoin, BCC is also facing this problem. The community is worried that the future expansion of bitcoin will be repeated in BCC. The community mistakenly believes that bitcoin ABC is the only team responsible for BCC development. The simplification of the development team will inevitably lead to the problem of developer centralization< In fact, BCC has four development teams: bitcoin XT, bitcoin classic, bitcoin unlimited and bitcoin ABC. They are all competitors of bitcoin expansion scheme, and have developed BCC compatible version
these four development teams basically include the teams that support large blocks in the bitcoin expansion debate. Not only that, it can also ensure the mutual competition among development teams, but also hope to attract more development teams to join them<
BCC is controlled by an organization
viabtc, founded by Yang haipo, is the world's first online BCC trading platform and the first person to dig BCC. The first block was g by viabtc. The community is worried that BCC will be controlled by a central block and become a political tool for some people
but in fact, BCC is the proct of bitcoin's three-year expansion battle. It is a decentralized digital currency supported by a huge community of big block supporters, and it is bitcoin's competitor. The isolation verification is deleted, the block size limit of 1m is cancelled, and the expansion route on the chain is adhered to.

6. The R9 270 can only cost 4 yuan. The driver problem is limited. Unfortunately, I used the MSI R9 270. The same problem, I called the customer service hotline. They said that the new version of the driver is limited, and the old version of the 12.8 driver should be used. After it is installed, the graphics card will be identified as 7870. However, the 12.8 driver can't drive the 270 card at all. But I can only run for 4 yuan

7. The high end of sapphire's graphics card is the symbol of high quality. As for the medium and low end, it's not as good as the channel

8. Sapphire hd6870 Extreme Edition adopts non-public design, with performance exceeding about 5% ~ 10%
hope to adopt it

9. The capacitance behind the core is not yellow, and the appearance of the graphics card is relatively new. You can test the speed of the fan of the graphics card on the computer. If it's almost the same as the new card, it's not a mine card. We can't judge whether it's mine cards by naked eyes. If we buy mine cards with good appearance, we can only recognize them.