30 notebook computing power
computing power is a measure of bitcoin network processing power. That is, the speed at which the computer calculates the output of the hash function. Bitcoin networks must perform intensive mathematical and encryption related operations for security purposes. For example, when the network reaches a hash rate of 10th / s, it can perform 10 trillion calculations per second
in the process of getting bitcoin through "mining", we need to find its corresponding solution M. for any 64 bit hash value, there is no fixed algorithm to find its solution M. we can only rely on computer random hash collisions. How many hash collisions can a mining machine do per second is the representative of its "computing power", and the unit is written as hash / s, This is called workload proof mechanism pow
computing power provides a solid foundation for the development of big data, and the explosive growth of big data poses a huge challenge to the existing computing power. With the rapid accumulation of big data in the Internet era and the geometric growth of global data, the existing computing power can no longer meet the demand. According to IDC, 90% of the global information data is generated in recent years. And by 2020, about 40% of the information will be stored by cloud computing service providers, of which 1 / 3 of the data has value
therefore, the development of computing power is imminent, otherwise it will greatly restrict the development and application of artificial intelligence. There is a big gap between China and the advanced level of the world in terms of computing power and algorithm. The core of computing power is the chip. Therefore, it is necessary to increase R & D investment in the field of computing power to narrow or even catch up with the gap with the developed countries in the world
unit of force
1 KH / S = 1000 hashes per second
1 MH / S = 1000000 hashes per second
1 GH / S = 1000000000 hashes per second
1 th / S = 100000000000 hashes per second
1 pH / S = 100000000000 hashes per second
1 eh / S = 100000000000 hashes per second
You can't dig in a day. It takes 2000 years
the global unified computing difficulty of bitcoin is 2621404453 (expected to change in two days). It takes more than 2000 years for a 2.5GHz CPU to work out a bitcoin
in order to make the graphics card fully loaded for a long time, the power consumption will be quite high, and the electricity bill 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
extended data:
bitcoin network generates new bitcoin through "mining". In essence, the so-called "mining" is to use computers to solve a complex mathematical problem to ensure the consistency of bitcoin network distributed accounting system
bitcoin network will automatically adjust the difficulty of mathematical problems, so that the whole network can get a qualified answer about every 10 minutes. Then bitcoin network will generate a certain amount of bitcoin as block reward to reward the person who gets the answer
when bitcoin was born in 2009, block rewards were 50 bitcoins. Ten minutes after its birth, the first 50 bitcoins were generated, and the total amount of money at this time is 50. Then bitcoin grew at a rate of about 50 every 10 minutes. When the total amount reaches 10.5 million (50% of 21 million), the block reward will be halved to 25
when the total amount reaches 15.75 million (5.25 million new output, i.e. 50% of 1050), the block reward will be further halved to 12.5. The monetary system used to have no more than 10.5 million in four years, after which the total number will be permanently limited to about 21 million
recently, I saw a test that the rtx3070 notebook only earns 1.2 yuan an hour.
1050ti computing power is less than 1 / 4 of 3070, which is about 24%
power consumption is 35% of 3070.
energy consumption is not cost-effective. One hour's income is definitely less than 1 yuan, except for the electricity charge. Once the loss of notebook is eliminated, it is definitely a loss
the World Gold Council (WGC) claims that the US Federal Reserve's interest rate increase may not have the adverse impact on gold price as many people think
the relationship between gold prices and interest rates is more complex than it appears and more fragile than in the past, the World Gold Council said in a report on Thursday
the association added: "other factors affecting the price of gold, including some positively correlated with economic growth, emphasize that gold is an important diversified asset and a portfolio asset for risk management. This role is becoming increasingly important as stocks and bonds are likely to provide below average returns over the next few years. "
in the past 12 months, market speculation on when the United States may choose to raise interest rates has been fierce. Since 2008, the Federal Reserve has kept the federal funds rate close to zero
although the Fed was initially expected to raise interest rates for the first time in a decade in June this year, a series of mixed economic data, low inflation rate and dovish comments on the US economic growth rate issued by Fed chairman Yellen delayed the schele of raising interest rates
when the federal funds rate really rises, the general consensus is that the price of gold will face heavy downward pressure, because the planned cost of holding gold will rise, thus prompting investors to turn to assets that provide income
the World Gold Council said: "however, jewelry and technology demand accounted for nearly 60% of the annual demand for physical gold. There is an indirect positive relationship between these markets and interest rates, that is, the periodic rise of interest rates is usually accompanied by the increase of economic growth and consumer spending
according to the World Gold Council, Europe and North America account for only 17% of global gold demand, and only 60% of it is related to investment
similarly, the view that US interest rate hikes affect gold prices is not as strong as before, because this situation is largely based on the market's analysis of the performance of gold prices and interest rates between the 1970s and 1980s. At that time, the economy was very different from what it is now
according to the World Gold Council, "the gold market is also different. Over the past decade, demand for gold in developed markets has fallen from more than 60% in the 1970s to less than 30%. Emerging market demand for gold accounts for 70% a year and is less sensitive to changes in US interest rates. In addition, the demand for jewelry and technology is largely Pro cyclical. "
in terms of investment demand, gold will continue to be a diversified asset
the World Gold Council said: "even when the nominal interest rate rises to 4%, gold has been quite effective in diversifying its portfolio and recing the risk of real interest rate."
according to the world gold association, the current real interest rate level in the United States is still very low and far below the threshold level. As of December 31, the real yields on three-month and one-year treasury bonds were - 0.73% and - 0.6%, respectively
the association said: "raising interest rates will not improve the outlook for fixed income assets. At the current yield level, the rising space of bonds may be limited, so it is not as effective as gold in easing equity risk. This helps to boost demand for gold, as some investors will use gold to supplement bonds when managing equity risk and diversifying their portfolios. "
Good evening, ordinary notebook computer, if it does not involve directly removing the hard disk to read, six or eight digit password can contain some special characters, such as "!" And "%", which can only be entered by pressing and holding the shift key. For the Hacker Dictionary cracking method, it will cost extra computing power and time to get the results (there is also an encryption method out of specification. Notebooks use some uncommon foreign language keyboards, such as Japanese and Greek layout, and ASCII coding is not popular). The other method is suitable for the laptop that can install the second hard disk and the first hard disk to form a raid0 array to distribute the stored data each time. As long as one hard disk is locked, the whole data cannot be read successfully. Raid0 is very suitable for environments with special confidentiality requirements