Sharp triangle miner
the power consumption of bitcoin mining machines is different according to different machines take Shenma 68T, the fastest mining machine in wet season, as an example. Suppose that the electricity charge is 0.22 per kilowatt hour in half a year in wet season and 0.34 per kilowatt hour in dry season, the wall power consumption of Shenma 68T's second-hand machine is 3264w, and the actual power consumption is 3500W, then the daily power consumption of a Shenma M20S 68T machine is 3.524 = 84 degrees, Annual power consumption 84 * 365 = 30660 degrees
according to the latest mining difficulty, a Shenma 68T machine can dig 0.00064836 BTC a day, and 10 machines can dig 2.366514 coins a year. The mining difficulty of the premise remains unchanged, but according to the current situation, it is assumed that the mining difficulty will increase by 30% from now to next June, and by 2.5% every month. It is estimated that 85% of the original coins should be g, that is, 2.012 coins. Ten machines of Shenma 68T can dig almost 2 coins a year
to sum up, the power consumption of ten Shenma 68T machines in a year is 306600 kwh, which can dig almost two coins
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the risk of mining machine
1. Hardware expenditure
< P > mining is actually a competition of performance and equipment. Some mining machines are composed of more such graphics card arrays. With tens or even hundreds of graphics cards, the hardware price and other costs are very high, There is considerable expenditure in miningin addition to the display card burning machines, some ASIC (application specific integrated circuit) professional mining machines are also put into the battlefield. ASIC is specially designed for hash operation, and the computing power is quite strong. Moreover, because their power consumption is far lower than that of the display card, they are easier to form scale, and the power cost is also lower. It is difficult for single chip display to compete with these mining machines, This kind of machine costs more
2. 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
3. System risk
system risk is very common in bitcoin, and the most common one is bifurcation. Bifurcation will lead to a drop in currency price and a sharp drop in mining income. However, many cases show that the forking will benefit the miners, and the forked competitive currency also needs the miners' computing power to complete the minting and trading process. In order to win more miners, the competitive currency will provide more block rewards and handling charges to attract miners. Risk makes miners
the maintenance of bitcoin mining machines is generally not too difficult. If there are many machines, it is better to return to the factory for maintenance
nowadays, most of the new coins do not need to be mined. For example, Ruitai coins are mined at one time.
and the value of the mine card is very low, so few people want it
if you are prepared for the above, then look down:
CPU AMD ryzen 5 1600 is worth about 1500 yuan. The box comes with heat dissipation
memory, DDR4 2400mhz 8g x2 850 yuan
motherboard, MSI B350 mortar series board, 600-700 yuan
power supply, rated 850W, Haiyun focus + 850fx 1050 yuan
the hard disk is random, so the performance of hard disk is not needed for mining.
AAC has three meanings, specifically as follows:
1, AAC: Advanced Audio Coding
AAC, full name advanced audio coding, is a file compression format specially designed for sound data. Different from MP3, it uses a new algorithm for encoding, which is more efficient. Using AAC format can make people feel that the sound quality does not significantly rece the premise, more compact. Apple iPod and Nokia mobile phones support AAC format audio files
AAC: extended and alternative communication system, abbreviated as ACC, can help people with speech or language barriers to communicate AAC: average annual cost, or ACC for short, expresses the average cost of using equipment every year. The calculation formula is as follows:AAC = (P-R) (A / P, I, n) + R * I + k
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the advantages and disadvantages of advanced audio coding (AAC)
1, advantages
compared with MP3, AAC has better sound quality, The files are smaller
AAC is a lossy compression format. Compared with the popular ape, FLAC and other lossless formats, there is a "essential" gap in sound quality. In addition, the faster transmission speed of USB3.0 and large capacity MP3 above 16g are accelerating the popularization, which also makes the "small" aura on AAC head no longer exist2, planetarium to science and Technology Museum bus:
option 1: [transfer once] (click to check the picture)
first take 632 (no.5-qinghe Xiaoying Bridge West) and get on at zoo station, then get off at Mingguang bridge north station; Finally, transfer to 387 (Beijing West Station - east entrance of Huizhong Road), get on at mingguangqiao north station, and get off at China Science and Technology Museum Station; The whole journey is about 9.5 km
option 2: [transfer once] (click to look up the picture)
first take 362 (Xierqi station Ximen of urban rail) to get on at zoo station and get off at Ximen Station; Finally, transfer to 387 (Beijing West Station - east entrance of Huizhong Road), get on at Ximen South Station, and get off at China Science and Technology Museum Station; It's about 8.5km
option 3: [transfer once] (click to look up the picture)
first take 347 (Badachu Xinjiekou gap) and get on at zoo station, then get off at yutaoyuan station; Finally, transfer to 387 (Beijing West Railway Station East of Huizhong Road), get on at suojiafen station and get off at China Science and Technology Museum Station; The whole journey is about 8.1 km
option 4: [transfer once] (click to check the picture)
first take 27 (West Diaoyutai outside Andingmen) to get on at the zoo station and get off at yutaoyuan station; Finally, transfer to 387 (Beijing West Railway Station East of Huizhong Road), get on at suojiafen station and get off at China Science and Technology Museum Station; The whole journey is about 8.1 km
option 5: [transfer once] (click to check the picture)
first take 360 (Xiangshan Ximen) to get on at the zoo station and get off at Ximen Station; Finally, transfer to 387 (Beijing West Station - east entrance of Huizhong Road), get on at Ximen South Station, and get off at China Science and Technology Museum Station; The whole journey is about 8.6 km
option 6: [transfer once] (click to check the picture)
first take 634 (Xiangshan Park East Gate Ximen) to get on at the zoo station and get off at Ximen Station; Finally, transfer to 387 (Beijing West Station - east entrance of Huizhong Road), get on at Ximen South Station, and get off at China Science and Technology Museum Station; The whole journey is about 8.6 km.