Mining capacity test
You can refer to the following, according to some commonly used graphics cards in the Internet bar market, sort out the price and calculation power of a related graphics card, as well as the expected return to the current period, It can be used as a reference:
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power consumption: 243w
computing power: 22.4m
price of graphics card: 1999 yuan
quantity of eth g every 24 hours: 0.015
revenue generated every 24 hours: 24.48 yuan
expected payback time: 81.66 days
power consumption: 159w
computing power: 24.3m
price of graphics card: 1599 yuan Yuan
number of eth g every 24 hours: 0.017
revenue generated every 24 hours: 27.9 yuan
estimated payback time: 57.31 days
total power consumption: 171w
computing power: 24.4m
price: 1999 yuan
number of eth g every 24 hours: 0.017
revenue generated every 24 hours: 27.87 yuan
estimated payback time: 71.73 days
Video card (graphics card) full name display interface card, also known as display adapter, is the most basic configuration of computer, one of the most important accessories. As an important part of the computer host, the graphics card is the equipment of digital to analog signal conversion, and it undertakes the task of output display graphics
the graphics card is connected to the main board of the computer, which converts the digital signal of the computer into an analog signal for the display. At the same time, the graphics card still has the ability of image processing, which can help the CPU work and improve the overall running speed. For those engaged in professional graphic design, graphics card is very important. Civil and military graphics chip suppliers mainly include amd (ultra micro semiconctor) and NVIDIA (NVIDIA). Today's TOP500 computer, including graphics card computing core. In scientific computing, graphics card is called display accelerator
First of all, which brand is 580
Second, the difference between N card and a card is also different
n card not only supports OpenCL mode, but also CUDA mode mining device is available. In CUDA mode, the performance of gtx580 is 30% higher than that of OpenCL mode. In CUDA mode, not only the performance is improved, but also the power consumption ring mining is reced, from 366 watts to 329 watts. This shows that the algorithm efficiency of CUDA mining is better than that of OpenCL mining, but e to the limitation of its own computing power, it is not as good as a card with massive stream processor
how much can be mined is to be tested
Mining is the use of bitcoin mining machine, which is used to earn bitcoin
one of the ways to get bitcoin is that users download software from personal computer and then run specific algorithm to get corresponding bitcoin after communicating with remote server
bitcoin is a kind of virtual currency. Bitcoin mining system is the process of carrying out mathematical operation for bitcoin network through computer hardware. Miners who provide services can get a reward, because the network reward is calculated according to the tasks completed by miners, so the competition for mining is very fierce
mining is actually a competition of performance and equipment. The mining machine composed of many graphics cards, even if it's only hd6770, can surpass the single graphics card of most users
and this is not the most terrible. Some mining machines are made up of more such graphics card arrays. When dozens or even hundreds of graphics cards come together, the graphics card itself costs money. Considering the hardware price and other costs, there is a considerable expenditure in mining
bitcoin mining process:
1. To find the ore pool
to start mining, there must be a ore pool with convenient operation and stable output. Its function is to subdivide the data packets for each terminal, and pay the corresponding amount of bitcoin according to the proportion of the data packets calculated by the terminal through precise algorithm
2. Download bitcoin miner (software)
in fact, there are many kinds of this miner, you can go to the official website to download
3. Setting mining software is a green software. After installation, we can set the language first to facilitate further setting. Next, you need to set the server, user name, password, equipment and so on. Generally, the server chooses a better network from BTC guide series, and the user name and password are set by ourselves before
4, bitcoin mining start
when we confirm that all settings are correct, click the "start mining" button to start bitcoin mining, and then the graphics card will soon enter the full speed running state, the temperature and fan speed will increase, you can monitor the state through gpu-z or graphics card driver
the concept of bitcoin was first proposed by Nakamoto in 2009. According to Nakamoto's idea, open source software was designed and released, and P2P network was built on it
bitcoin is a kind of P2P digital currency
bitcoin is not issued by a specific monetary institution. It is generated by a large number of calculations based on a specific algorithm. The design based on cryptography can make bitcoin only be transferred or paid by the real owner. This also ensures the anonymity of money ownership and circulation transactions
the biggest difference between bitcoin and other virtual currencies is that the total number of bitcoin is very limited and it has a strong scarcity. 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 21 million
this virtual currency only needs the computing power of the computer, and it has no technical content. Basically, it only needs to hang up to "generate" bitcoin, and bitcoin can be traded at any time, so as to transform it into real currency
if you want to get bitcoin, you need to download the special "mining software" and set it to start
In general, the computing power of GPU is much higher than that of CPU, and even the entry-level graphics card is much better than the top i7 series. So it indirectly tests the performance of the graphics card① business test
there are three forms of business test in public institutions. One form is the same as the national test and provincial test, one paper only tests the administrative professional ability test. One form is that a test paper is divided into two parts: common base and line test, generally half of the score of each station; Another form is that a test paper includes three parts: public foundation, practice test and writing
the type of examination questions in public institutions is basically the same as that in national examination and provincial examination, and even the original questions in national examination and provincial examination will be encountered in the real examination questions of public institutions. It mainly includes mathematical operation, speech comprehension, judgment and reasoning, and data analysis. However, the problem type of public institutions has its own unique characteristics: first, the problem type of number reasoning is often tested in mathematical operation, and in some places, about 10 number reasoning are even tested. Second, in language understanding, we often examine the types of questions, such as sick sentences, recognition of wrongly written words, recognition of rhetorical devices, use of idioms, and article reading. Of course, there is a more detailed distinction between the common points in each place. The third is the question type of event sequencing in judgment reasoning. Fourth, common sense is sometimes involved in the judgment and reasoning and language understanding< At present, the examination of public institutions in various places involves the part of subjective questions, and there are three main test methods:
one is "Shen Lun". Similar to the civil service "Shenlun" subject, the "Shenlun" as a separate subject inspection, full score of 100. However, in terms of the length of materials, the number of topics and the type of questions, the difficulty is lower than that of the civil servant's "Shenlun". For example, in Jilin, Heilongjiang, Liaoning, Shandong, Zhejiang, Shanxi and other provinces, some public institutions take the form of application for examination< The second is comprehensive writing. Combined with the public basic knowledge or administrative professional ability test, the paper is often called "public basic knowledge", "comprehensive basic knowledge" or "comprehensive knowledge", with a full score of 100. Among them, writing accounts for 30-60 points, and the rest are single choice, multiple choice and other objective questions. The way of comprehensive writing is to give a short material and ask the examinee to write a 1000 word argumentative paper according to the material
the third is hybridity. It is commonly called "comprehensive application ability". It is common in some public institutions such as Shanghai, Hubei, Wenzhou, Zhejiang and Jiangxi. It is set as a separate subject with a full score of 100. All of them are subjective questions, and there are many kinds of questions, including: case analysis, material processing, document writing, document error correction, discussion, planning and application, material composition, etc
in a word, at present, there are many types of subjective examination in public institutions, such as argumentation, writing, case analysis (also known as material processing, material analysis, comprehensive analysis, etc.), official document writing and error correction. In terms of content, it focuses on reading comprehension, comprehensive analysis, language expression, problem-solving ability and professional knowledge required by the post< (3) the examination for public institutions is simpler than that for civil servants, in which the part of public basic knowledge is equivalent to the part of common sense, but the difficulty is obviously reced. In terms of the scope of the examination, it generally involves politics, economy, management, official documents, general situation of public institutions, morality, science and technology, humanities and other knowledge. From the way of examination, the vast majority of questions are memorizing questions, and most of them are objective questions. Therefore, if candidates review in advance, they can easily get high marks< (2) interview (1) structured
structured interview of public institutions focuses on six test types:
self cognition:
self cognition is the key test type of public institutions, focusing on the assessment of job seeking motivation and job matching, which is often the first question in interviews of public institutions in many provinces and cities
there are two main types of self-awareness assessment, one is job seeking motivation, the other is ability post matching. Job search motivation focuses on examinee's examination motivation. The setting of questions is mainly to ask examinee's advantages, disadvantages, abilities, experiences, hobbies, examination motivation and self-evaluation. In short, job search motivation focuses on examinee's own situation; Competency post matching, as the name suggests, refers to the matching of ability and post needs. For this reason, competency post matching focuses on the assessment of candidates' work level related abilities, such as executive ability, professionalism, professional ethics, team consciousness, organizational culture, etc. in short, competency post matching focuses on the assessment of whether candidates' ability matches the post
comprehensive analysis:
comprehensive analysis is a required examination type for public institutions, which is the most difficult and the most widely selected. Different provinces and cities have different emphasis on comprehensive analysis. Therefore, candidates need to understand the situation of the provinces and cities they report in order to prepare for the exam
comprehensive analysis focuses on six types of questions: social phenomenon, public policy, famous sayings and sayings, philosophical stories, principle effects and comics. The characteristics of each type of questions are similar to those of civil servants, and even civil servants' real questions often appear in public institutions, and the difficulty is generally lower than that of civil servants. Indivial cities are more biased and difficult, but the overall level is simpler than that of civil servants<
interpersonal relationship:
the interpersonal relationship of public institutions often involves the relationship between the cadres and the masses at the grass-roots level, and it is common to deal with the relationship with leaders, colleagues and the masses. Community workers focus on solving community problems, and the three supports and one support focuses more on the coordination of villagers' relationship. The assessment of interpersonal relationship in other units is similar to that of civil servant examination
at present, the trend of public service examination is to dilute the types of questions, and the boundaries between interpersonal relationship and situational adaptation are becoming more and more blurred, so candidates need to be clear about this trend. The difference between the two is mainly reflected in the interpersonal relationship is more focused on the harmonious problem solving, and the situational response is more focused on the satisfactory problem solving<
organization and management:
the difficulty of organization and management in public institutions is relatively low, and the types of assessment activities are also common, such as investigation, publicity, reception, etc. the difference with civil servants is that the assessment focuses more on the grass-roots units, pays more attention to the key details of activities, and looks at the ability of organization, coordination and overall management of senior high school entrance examination students<
situational response:
the assessment of situational response is relatively simple and closely related to interpersonal relationship. The boundary between the two is becoming more and more blurred. The common scenarios are the handling of work emergencies, disputes over the interests of the masses, inappropriate network information and other issues, which are relatively low in difficulty
speech expression:
the proportion of speech expression questions in the examination of public institutions is low, and many provinces and cities have never taken the examination. At present, the provinces that have passed the examination focus on string words and speeches, and the on-site simulation has increased in recent two years. Generally speaking, the difficulty is average<
② leaderless
leaderless can be divided into three categories: selective, ordered and open. The choice category is divided into two types: single choice and multiple choice. Single choice refers to the list of multiple options in the topic, from which candidates need to choose one option. Through group discussion, the group members finally reach an agreement; Multiple choice refers to the list of multiple options in the topic, from which candidates select some options and through group discussion, group members finally reach a consensus
the sorting class is a variant of the selection type. There is one more sorting process in the sorting analogy with the selection class. There are two kinds of sorting classes, one is partial sorting and the other is full sorting. Part of the ranking is the key question type of the current examination, and all of the ranking is more difficult. At present, the assessment is relatively less
the form of open-ended questions is similar to that of material questions, and many details of the examination are also similar to structured ones. However, e to the fact that the examination is concted according to the details of the assessment without leadership, it is a new type of examination method without leadership at present.