1. The first step in setting up mining equipment is to choose the right hardware. This article will focus on GPU (graphics card) mining, of course, you can use CPU or ASIC equipment mining. Amd graphics card architecture is very beneficial to mining. NVIDIA card is not suitable for mining because of its low hash rate. The best NVIDIA graphics cards are less than 0.5 megahash. Notebook Hardware mining is not as good as NVIDIA card, which is a bad option for mining. You need to use a desktop system for mining. There is a desktop system to ensure adequate cooling of the hardware
the graphics card or card needs to be able to match the motherboard, and the power supply must have enough PCI-E connectors. Before determining the graphics card, pay attention to these. In order for the system to cool down sufficiently, you need to remove the cover of the chassis in order to get better heat dissipation. This is what people call "open air rig.". If you can aim the system at a fan or air conditioner, you can make the device cooler when it's running, thus extending its life and keeping it efficient
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. Bitcoin was acquired by CPU in the early days, e to different working methods. CPU is mainly to do full-function operation, the number of core is small, and the operation ability is limited (GPU is a very large number of operation core for special operation). With the advantages of GPU general computing and the continuous development of GPU speed, miners graally began to use GPU instead of CPU for mining. Bitcoin mining uses SHA-256 hash operation, which will carry out a large number of 32-bit integer cyclic right shift operation. Interestingly, this algorithm operation can be implemented by a single hardware instruction in AMD GPU, while it needs three hardware instructions to simulate in NVIDIA GPU. This one alone brings an additional 1.7 times of computing efficiency advantage for AMD GPU. With this advantage, amd GPU is favored by the majority of miners. At present, it has left GPU computing. At present, miners have begun to widely use integrated circuit (ASIC) mining machine. Although this kind of mining machine can only be used to dig bitcoin, other currencies can not be used yet, but a single mining machine can reach the level of megabytes, especially loved by mine owners in Sichuan, Guizhou and other regions. Tens of thousands of professional mining machines are in full swing, and retail investors are unlikely to get bitcoin in the face of such powerful
computing power.
4. Now to dig out a bitcoin, it costs about 10000 yuan for electricity, and it's a large computer. Ordinary people don't need to dig. First, there is no large-scale computer. Second, the cost is too high. The electricity bill alone costs 10000 yuan
5. At least dozens of times as much as CPU, and bitcoin uses OpenCL. The efficiency of 7 series a card is much higher than that of N card.
6. Oneledger (OLT coin) equity certificates are issued with the most mature Ethereum erc20 smart contract token, which has the characteristics of decentralized, tamper proof, open and transparent
blockchain technology. The total amount of equity certificates issued is 1 billion and will never be added, The unsold 65% tokens are allocated according to the white paper plan for maximum benefits: 1) community retention: 25% tokens will be locked in the smart contract for at least six months, and then there will be a 1-2 year distribution plan to help the ecosystem development, focusing on building a healthy blockchain development ecosystem, from which developers and community contributors will benefit and reflect their value. 2) Team and consultant: 15% of the tokens are allocated to the team and consultant, and the tokens retained by the team are locked by the smart contract for 24 months and issued quarterly. The token retained by the consultant locks in 12 contracts and is issued monthly to encourage optimal development. 3) The company reserves: 10% of the tokens will be locked for at least 6 months, and then will be issued monthly within 18 months, including but not limited to: resource docking, talent introction, improvement of operation and office environment, etc; 4) Marketing and long-term partners: 15% of the token distribution cycle is from March to June, which is issued monthly. The minimum lock-in period of long-term partners is 6 months, and then it will be issued within 1-2 years. Mainly used for the whole marketing and long-term partners.
7. CP and CV are two different thermodynamic parameters; The former is equal pressure heat capacity and the latter is equal volume heat capacity.
8. If the price of virtual currency is reced, there will be less people to buy graphics cards and fewer people to buy them, which will affect the supply and demand of graphics cards
as long as the supply exceeds the demand, the price will drop
9. The actions in bitcoin can be regarded as the use of graphics card to do continuous general computing, and the computational complexity is relatively low and quite repetitive. The stream processor used by graphics card is just suitable for such an algorithm. It's like constantly solving equations. The graphics card is 2000 middle school students, while the CPU is 8 math doctors. Although the mathematical knowledge of the doctor of mathematics is far more than that of the middle school students, the speed of solving medium-sized equations such as virtual currency is certainly not as fast as that of 2000 middle school students. Therefore, the more graphics cards, the more operations.
