What is the relationship between bitcoin and graphics card

1. 1. CPU is mainly optimized for serial instructions, while GPU is optimized for massively parallel operations
2. Modern multi-core CPU aims at instruction set parallelism (ILP) and task parallelism (TLP), while GPU is data parallelism (DLP)
3. GPU often has a larger bandwidth of memory, that is, the so-called video memory, so it will also have good performance in high throughput applications
4. CPU is a general-purpose operation. In short, it means brainless calculation and violent calculation. Whether it's 100 children sharing apples or simulating the earth, it can be decomposed into the most basic calculation of 1 + 1 = 2. GPU is specially designed to deal with high-order mathematical algorithms, such as calculating the relative positions of light source, object, viewpoint and shadow, which requires trigonometric functions to be piled up. The bitcoin digger uses SHA-256, a secure hash function invented by the US National Security Agency, which is generally used for password encryption and decryption. This algorithm can perform a large number of 32-bit integer right-rotate operations, which is very suitable for GPU which is good at large-scale concurrent computing and password cracking.

2.

Why use graphics card to mine

compared with CPU, GPU is used for general purpose calculation. So it can stack hundreds of stream processors awesome. Each stream processor is like a small CPU. Although its ability to run complex programs is far from the power of CPU, it can not support many processors, so the actual performance, especially the single precision floating point performance is much stronger than that of CPU. p> However, as we have mentioned before, a card is very suitable for general computing such as virtual currency because it has many stream processors, and the speed of obtaining specific solutions is much higher than that of N card. Therefore, many miners rush to buy a card to calculate virtual currency for profit

of course, with NVIDIA's Pascal graphics card, n card's ability in mining virtual currency is not as different as a card before. So in the current situation that a card is generally out of stock, those mid-range N cards have become the second choice for miners

What are the disadvantages of mine card

finally, I want to talk about why we can't choose mine card when we are shopping for second-hand cards. Because the miners are mining bitcoin, the most important thing is to seek profits. Therefore, the graphics card they use is running and calculating all the time, and its strength is far greater than that of daily game applications. In other words, running such a calculation for one day is equivalent to running a graphics card for one month

in addition, the places where virtual currency is mined are mostly the places where multiple graphics cards gather. Thousands of graphics cards are constantly calculating in a room, and their heat is also quite huge. Miners can not choose the chassis with good heat dissipation conditions like ordinary consumers, so that the heat can be released smoothly. In this way, the graphics cards can still operate for 7 * 24 hours under high temperature conditions, It also deepens its aging degree

the result of doing so is that the graphics cards used for mining are lost prematurely. If you buy these graphics cards, the result will be unstable operation, restart and other things will continue to happen

moreover, at present, manufacturers also have strict requirements on mine cards, such as banning second-hand sales and shortening the shelf life. If users buy these mine card graphics cards, future maintenance will also be a big challenge

3. At the beginning, it was mining with graphics card, but now most of mining with graphics card is mining ether coin, it is said that 1060-1070 profit is very high

4. After the completion of MLM or identification, it is important to remember that under no circumstances can you remit money first, whether it is franchise fee, deposit or other name,

5. Bitcoin and other virtual coins are booming, and more people are engaged in mining, which also drives the development of mining machine. Mining machine is composed of many graphics cards array, so the mining efficiency is high, so the price of graphics cards has begun to rise, and there are many obsolete graphics cards in the second-hand market, because the long-term high load working life will not be too long, so the second-hand graphics cards should not be bought as far as possible.

6. Mining, you need to use amd
graphics card. Use its
general computing
function to participate in high difficulty computing tasks
n card
has low mining efficiency, no one uses it.

7. Bitcoin mainly uses hash algorithm, so the number of mid stream processors in graphics card is very important. CPU is more efficient than GPU
in the early days, it mainly used a card, such as hd7850, hd7870, hd7850, hd7870...... Later, n-card was optimized. Later, gtx1070 and gtx1060 joined the mining army. Now, even the price of Jingying gtx1060 3G is around 2000
that is to say, these virtual currencies raise the price of graphics cards to a virtual high, thus increasing the cost of upgrading the configuration for game players.