How to choose the power supply? Old drivers may not be able to tell you.

How big is the power supply? I believe this is a problem that many DIY players will encounter when purchasing power. Most people’s solution is to follow the crowd, and I will choose how big others choose. In addition to seeking help in forums and post bars, the sales volume and evaluation of e-commerce platforms are also one of the reference standards.

Although this method can solve the problem of "which power supply to buy" temporarily, it can’t answer the fundamental question of "how much power to buy" in the long run. You can’t ask others for help every time you install the machine, can you?

So is there a way to do it once and for all without asking for help? Today, I will teach you a trick to easily choose the power supply suitable for your computer.

Let’s popularize the basic knowledge before teaching you how to choose the power supply suitable for your computer.

Our computer isIt is composed of CPU, graphics card, motherboard, memory, hard disk, peripherals and other hardware. When the computer is running, all parts of the hardware need to consume a certain amount of power. Generally speaking, the power consumption of CPU and graphics card is the highest, accounting for the vast majority of the overall power consumption of the computer.

Whether the computer can run stably is not only affected by the hardware itself, but also by the power supply that provides them with electricity.

Simply put, if the power consumption is higher than the overall power consumption of the whole machine, the computer will run stably; When the power supply is lower than the overall power consumption of the whole machine, it will be unstable. Therefore, it is particularly important to choose a power supply with sufficient power.

How to choose the power supply? Old drivers may not be able to tell you.

In fact, the solution is very simple, just buy a power supply with high power supply, but don’t forget that the higher the power supply often means the higher the price, and you need to pay more money for the high power supply.

The power calculator is good, but the update is not in place.

So, how can we calculate the overall power consumption required by the whole machine?

How to choose the power supply? Old drivers may not be able to tell you.

There are two ways, one is to calculate the overall power consumption of the whole machine through the known power consumption of each part of the hardware. Obviously, this method is time-consuming and laborious, and it is necessary not only to find the power consumption of each part of hardware, but also to add them one by one, which inevitably leads to the risk of mistakes.

How to choose the power supply? Old drivers may not be able to tell you.

The second method is obtained through a power calculator. There are some power calculators on the Internet. You can automatically calculate the required power by selecting the configuration of your computer, which is very convenient.

But most of these calculators are old, and the support for many new models of hardware is not in place. You may not find your own hardware at all.

PSU Calculator to find out.

The following is the key point that the author wants to talk about. Since the power calculator is more convenient than manual search, is there a power calculator that supports the existing hardware better?

The answer, of course, is yes, which is also the purpose of this paper. It is a power calculator from Cool Extreme.

How to choose the power supply? Old drivers may not be able to tell you.

This power calculator is called PSU Calculator, which can only be found from Cool Extreme. The English interface is not very friendly to us, but fortunately, the support for new hardware is good, and it can be found in 8-generation Core and 10-series graphics cards.

How to choose the power supply? Old drivers may not be able to tell you.

After opening the link of PSU Calculator, you can see a very detailed table, including motherboard, CPU, memory, graphics card, hard disk, keyboard and mouse, fan and other devices, and you can even overclock the frequency of CPU and graphics card to calculate the appropriate power supply. I have to say that this power calculator is very careful and worth learning from domestic manufacturers.

How many watts of power do the high, medium and low platforms need?

After knowing that there is a good thing called PSU Calculator, let’s try to calculate how many watts of power are needed for high, medium and low platforms based on the current mainstream hardware configuration.

1. High-end platform: i7-8700K+GTX 1080

How to choose the power supply? Old drivers may not be able to tell you.

Let’s take a look at the high-end platform of i7-8700K+GTX 1080. Other configurations are fixed as two 8GB memories, a SATA SSD+ and a 7200 rpm mechanical hard disk.

How to choose the power supply? Old drivers may not be able to tell you.

After selecting the configuration, click Calculate in the lower right corner to calculate the required power supply.

It can be seen that there are two powers in the lower right corner, one is Load Wattage, and the other is Recommended PSU Wattage. Load Wattage refers to the typical load of this configuration, such as the power required for running a 3D game, and Recommended PSU Wattage is the recommended power, which we shall take as the standard.

The typical load of this configuration is 401W, and the recommended power is 451W W. It can be seen that the power required by this high-end configuration is not as high as we thought, and the power supply of 500-600W can meet it.

For example, Hangjia’s JUMPER500 power supply has a rated power of 500W, and has passed the 80PLUS white-label certification, with 12V single-channel 40A current output and active PFC+ dual-transistor forward scheme. The price of 299 yuan is very cost-effective.

2. Mid-range platform: i5-8400+GTX 1060

How to choose the power supply? Old drivers may not be able to tell you.

For the mid-range platform, we take the i5-8400+GTX 1060 as an example. Other configurations are still fixed as two 8GB memories, a SATA SSD+ and a 7200 rpm mechanical hard disk. Calculated by PSU Calculator, this configuration only needs 362W W.

We can choose a 400W power supply for this mid-range configuration. For example, this Longba 400 power supply of Jinhetian has a rated power of 400W, adopts an enhanced 12V output (18A), double copper PCB design and a 12cm hydraulic fan. The power supply is stable and the heat dissipation is more efficient, and the price is only 159 yuan, which is very affordable.

3. Low-end platform: AMD Ruilong 2200G+ set display.

How to choose the power supply? Old drivers may not be able to tell you.

Here we positioned Ruilong 2200G as the living room entertainment center, so we didn’t increase the solo display. The recommended power calculated by PSU Calculator is 212W, and the power consumption is very low, so it is enough for us to choose a 300W power supply.

For example, the C5 power supply of Xingu, a nuclear-powered cruiser, has a rated power of 300W, a 12V output of 252W(21A), accounting for 84%, and the peak power can reach 400W W. Moreover, it adopts a 12cm PWM intelligent temperature control fan, which can reduce noise while providing large air output. The price is more affordable, only 119 yuan.

Well, the above is the author taking the current mainstream configuration as an example, and calculating the required power through PSU Calculator to choose the power supply he needs.

The purpose of this paper is to tell you that you can use PSU Calculator as a small tool when purchasing power supply, so you don’t have to ask for help from others or calculate manually. Interested friends may wish to collect it and try it first.

How to choose the power supply? Old drivers may not be able to tell you.

Correctly understand the general trend of China’s economic development (rational view of economic situation)

  Core reading

  China’s economy has great development resilience and potential, and the long-term positive fundamentals have not changed. We should correctly understand the general trend of China’s economic development, accurately grasp the strategic opportunities facing China’s economic development, and promote the effective improvement of quality and reasonable growth of the economy.

  Since the beginning of this year, under the complicated and severe external environment, China’s national economy has continued to recover, the overall recovery has improved, and high-quality development has been solidly promoted. Although the current economic operation is facing new difficulties and challenges, China’s economy has great development resilience and potential, and its long-term positive fundamentals have not changed. General Secretary of the Supreme Leader pointed out: "China’s development is still in an important period of strategic opportunities, but there are new developments and changes in opportunities and challenges." Report to the 20th CPC National Congress of the Communist Party of China made a major judgment that "China’s development faces new strategic opportunities", and at the same time emphasized that "China’s development has entered a period in which strategic opportunities and risk challenges coexist and uncertainties and unpredictable factors increase". Whether we can grasp new strategic opportunities, effectively deal with complicated risk challenges and firmly grasp the initiative of development depends fundamentally on whether we can concentrate on our own affairs. We should correctly understand the general trend of China’s economic development, firmly grasp the primary task of high-quality development, implement the new development concept completely, accurately and comprehensively, and promote the effective improvement of quality and reasonable growth of quantity of the economy.

  China’s overall economic recovery is improving, and high-quality development has been solidly promoted.

  Since the beginning of this year, under the strong leadership of the CPC Central Committee with the Supreme Leader as the core, all localities and departments have better coordinated the two overall domestic and international situations, better coordinated the prevention and control of epidemic situation and economic and social development, better coordinated development and safety, achieved a good start in the first quarter, continued to recover in the second quarter, and continued to recover steadily in July. In the first half of the year, the GDP increased by 5.5% year-on-year, which was significantly faster than the economic growth rate of 3% in the whole year of last year, and was also significantly faster than the economic growth rate of major developed economies in the world.

  Consumption recovered and the investment structure continued to be optimized. Since the beginning of this year, the economy and society have fully resumed normal operation, and the order of production and life has been accelerated. China’s consumption has recovered. 1— In July, the total retail sales of social consumer goods increased by 7.3% year-on-year, service consumption increased rapidly, cultural and entertainment consumption continued to expand, and online retail remained active. The scale of investment in fixed assets continued to expand, and investment in high-tech industries grew rapidly. 1— In July, investment in fixed assets (excluding farmers) increased by 3.4% year-on-year, of which investment in infrastructure and manufacturing increased by 6.8% and 5.7% respectively, and investment in high-tech industries increased by 11.5%.

  Industrial upgrading was steadily advanced, and the recovery of service industry was accelerated. Since the beginning of this year, the three industries have continued to recover and the development foundation has been consolidated. Agricultural production remained stable, and summer grain production achieved a bumper harvest. Industrial production continued to recover, 1-mdash; In July, the added value of industrial enterprises above designated size increased by 3.8% year-on-year. The green transformation achieved remarkable results, new energy-related industries developed well, new energy vehicles, photovoltaic cells and other products grew rapidly, and the driving force for upstream and downstream industries was also enhanced. The service industry grew rapidly, 1-mdash; In July, the national service industry production index increased by 8.3% year-on-year, and the growth rate of contact and aggregation services such as accommodation, catering and transportation rebounded significantly.

  The trade structure continued to be optimized. China has actively expanded its high-level opening to the outside world and promoted the optimization of trade structure. The scale of import and export of goods is generally stable and the trade surplus remains at a high level. 1— In July, the import and export of general trade with higher added value accounted for 65.4% of the total import and export, and the import and export of private enterprises increased by 6.7%, accounting for 52.9% of the total import and export; Imports and exports to countries along the Belt and Road increased by 7.4% year-on-year, faster than the growth rate of all imports and exports.

  Employment and people’s livelihood are strongly guaranteed. With the improvement of economic recovery, the policy of stabilizing employment has been effective continuously, and the employment situation has gradually improved. In the first half of the year, 6.78 million new jobs were created in cities and towns nationwide, an increase of 240,000 over the same period of last year. The average unemployment rate in national urban surveys is 5.3%. Residents’ income grew rapidly. In the first half of the year, the per capita disposable income of the national residents was 19,672 yuan, a real increase of 5.8% after deducting the price factor, which was significantly faster than the growth rate of last year.

  Under the complicated and severe external environment, such as the weak recovery of the world economy, the high level of global inflation, and the prominent spillover effect of monetary policy tightening in major economies, China’s economic growth rate remains ahead of the major economies, demonstrating the strong resilience of China’s economic development. At the same time, we must see that the current economic operation is facing new difficulties and challenges, mainly due to insufficient domestic demand, difficulties in some enterprises, many hidden risks in key areas, and complex and severe external environment. Among them, there are both cyclical and structural factors, both developmental and institutional obstacles, both supply-side and demand-side drivers, both domestic and international risks. However, in the long run and the general trend, China’s economy has great development resilience and potential, and the long-term positive fundamentals have not changed, and China’s development is facing new strategic opportunities.

  China’s continuous development and growth has brought new development opportunities.

  General Secretary of the Supreme Leader pointed out: "Our greatest opportunity is our continuous development and growth". After the founding of New China, especially since the reform and opening-up, we have completed the industrialization process that developed countries have gone through for hundreds of years in decades, and at the same time made great achievements in various fields such as politics, culture, society and ecological civilization. Self-development is the most solid foundation for us to cope with risk challenges, and it also brings us more development opportunities.

  China’s entry into a new stage of development contains an important opportunity to achieve new and greater development. Since the 18th National Congress of the Communist Party of China, historic achievements and changes have taken place in the cause of the Party and the state, which not only successfully promoted and expanded Chinese modernization, but also provided a more perfect institutional guarantee, a more solid material foundation and a more active spiritual force for Chinese modernization. We have completed the historical task of getting rid of poverty and building a well-off society in an all-round way, and entered a new development stage of building a socialist modern country in an all-round way. Based on the new development stage, implementing the new development concept, building a new development pattern and promoting high-quality development, China will achieve new and greater development.

  The historic leap of China’s economic strength contains an important opportunity for structural optimization and upgrading. Since the reform and opening up, China’s gross domestic product (GDP) has grown at an average annual rate of about 9%; In the past decade, the average annual growth rate has exceeded 6%, and the economic strength has achieved a historic leap. In 2022, China’s GDP accounted for about 18% of the global economy, ranking second in the world. On the basis of continuing to maintain the advantages of complete industrial system, leading industrial chain supporting capacity in the world, and ranking first in manufacturing scale in the world, China has promoted the transformation and upgrading of traditional industries, promoted the rapid development of strategic emerging industries and advanced manufacturing industries, promoted the healthy development of digital economy, significantly improved its scientific and technological innovation capability, and continuously optimized its economic structure. Making full use of the advantages of China’s super-large-scale market, expanding domestic demand as a whole and deepening structural reform on the supply side, and forming a higher level dynamic balance between demand pulling supply and supply creating demand will continuously promote the optimization and upgrading of China’s economic structure and enhance our endogenous motivation to stabilize the basic economic disk and win the initiative in development.

  Socialism with Chinese characteristics’s system is more mature and stereotyped, which provides us with an important opportunity to deal with uncertainty and turn crisis into opportunity. China’s socialist system has extraordinary organizational mobilization ability, overall coordination ability and implementation ability, and can concentrate on doing great things, difficult things and urgent things. Since the 18th National Congress of the Communist Party of China, our party has adhered to and improved the Socialism with Chinese characteristics system, promoted the modernization of the national governance system and governance capacity, and focused on the deployment of fundamental systems, basic systems and important systems that support the Socialism with Chinese characteristics system. With great political courage, we have comprehensively deepened reform, strengthened the reform of top-level design, resolutely eliminated the shortcomings of various institutional mechanisms, promoted the basic institutional framework in various fields, and achieved historic changes, systematic reshaping and overall reconstruction in many fields. At present, the century-old changes are accelerating, the changes of the world, the times and the history are unfolding in an unprecedented way, and the unstable and uncertain factors are increasing significantly. By giving full play to the advantages of Socialism with Chinese characteristics’s system, we can effectively cope with the uncertainty of the external environment, guard against and resist risks, and seize the opportunity to fight a strategic initiative war to turn danger into opportunity.

  Firmly grasp the new strategic opportunities contained in the hundred-year change

  General Secretary of the Supreme Leader pointed out: "Entering the new stage of development, profound changes in the domestic and international environment have brought a series of new opportunities as well as a series of new challenges, which are the coexistence of crises, the organic nature of crises and the turning point of crises." At present, the great changes in the world that have never happened in a century have accelerated their evolution, a new round of scientific and technological revolution and industrial transformation have developed in depth, and the international forces have been deeply adjusted, which has brought new risks and challenges as well as new strategic opportunities for China’s development.

  The world’s scientific and technological revolution and industrial transformation have provided us with new opportunities to open up new fields and new tracks for economic development and to shape new development momentum and new advantages. At present, a new round of scientific and technological revolution characterized by intelligence, networking and digitalization is profoundly changing the production and lifestyle of human beings, and technological breakthroughs represented by new energy, new materials and biotechnology are reconstructing the future of social productive forces. In this round of scientific and technological revolution, China is no longer an outsider, but a participant, a runner and even a leader in some fields. We adhere to the strategy of innovation-driven development and give full play to the leading role of scientific and technological innovation. Firmly grasping the historical opportunity of this round of scientific and technological revolution and industrial transformation, we will certainly be able to open up new fields and tracks for economic development and shape new kinetic energy and advantages for development.

  Economic globalization provides us with new opportunities to promote high-level opening up. In recent years, although the trend of anti-globalization has risen, unilateralism and protectionism have obviously increased, economic globalization conforms to the general trend of world development and is an irreversible trend of the times. China has adopted a more proactive opening-up strategy, actively participated in the international division of labor, more effectively integrated into the global industrial chain, supply chain and value chain, and more actively expanded foreign exchanges and cooperation. The average contribution rate of China’s economy to world economic growth has exceeded 30% for many years, and China has maintained its position as the world’s largest trader of goods for many years, ranking second in the world in terms of foreign capital utilization and ranking first in the world in terms of foreign investment. It has contributed to global economic growth and created more strategic opportunities for its own development. Conforming to the general trend, based on the national conditions, correctly choosing the path and rhythm of integration into economic globalization, and making full use of domestic and international markets and resources can accelerate the construction of a new development pattern and promote high-quality development.

  The positive changes in the balance of international power provide us with new opportunities to strengthen cooperation with emerging market countries and developing countries. In recent years, the international power balance is undergoing unprecedented positive changes. The rise of emerging market countries and developing countries in groups has gradually improved their position in the world economy and played a role in the international industrial division of labor, which has driven the speed, breadth and depth of international pattern adjustment and is fundamentally changing the world political and economic map. As the largest developing country in the world, strengthening cooperation with emerging market countries and developing countries can not only complement each other’s advantages and promote the developing countries to enhance their endogenous development momentum, but also expand the external space for China’s economic development and create new strategic opportunities.

  The reform of global governance system provides us with new opportunities to play a greater role in global governance. In the past few decades, the international economic power has undergone a profound evolution, but the global governance system has failed to reflect the new pattern, which is not representative and inclusive enough. The international community is increasingly calling for the reform of the global governance system. Together with other countries, China has promoted the development of the international order and global governance system in a more just and rational direction, promoted the development of economic globalization in a more open, inclusive, inclusive, balanced and win-win direction, and promoted the building of a community of human destiny, which not only creates a good international environment for the development of the world economy, but also brings new strategic opportunities for China’s development.

  Economic fluctuation is a normal phenomenon in the market economy, and the economy always runs in fluctuation. We should not only see the short-term fluctuations, but also take effective measures to continuously promote the sustained improvement of economic operation. More importantly, we should correctly understand the long-term positive development trend of China’s economy, fully understand and make good use of new strategic opportunities, accelerate the construction of a new development pattern, continuously expand China’s economic strength, scientific and technological strength and comprehensive national strength, and enhance China’s viability, competitiveness, development and sustainability.

  (The author is the former president of China Renmin University)