How do bitcoin and Ethereum make money
bitcoin uses SHA-256 encryption algorithm. When mining, it competes with computing power. In order to improve computing power, bitcoin has gone through four stages: CPU mining, GPU mining, FPGA mining and now ASIC mining machine mining, and the degree of specialization is getting higher and higher
Ethereum uses the ethash encryption algorithm. In the process of mining, it needs to read the memory and store the DAG file. Because the bandwidth of each read memory is limited, and the existing computer technology is difficult to have a qualitative breakthrough in this problem, so no matter how to improve the computing efficiency of the computer, the memory read efficiency will not be greatly improved. Therefore, in a sense, Ethereum's ethash encryption algorithm is ASIC resistant.
different encryption algorithms lead to great differences in mining equipment and computing power between bitcoin and Ethereum
at present, bitcoin mining equipment is mainly ASIC mining machine with a very high degree of specialization. The maximum computing power of a single mining machine is 110t / s, and the scale of computing power of the whole network is more than 120eh / s
the main mining equipment of Ethereum is video card miner, and there are very few specialized ASIC miner. On the one hand, the "ASIC resistance" of Ethereum mining algorithm improves the threshold of developing ASIC miner. On the other hand, after Ethereum is upgraded to 2.0, the consensus mechanism will be transformed into POS, and the miner can not continue mining
compared with the ASIC miner, the graphics card miner has two orders of magnitude difference in computing power. At present, the computing power of mainstream graphics card miner (8 cards) is about 420mh / s, and that of Ethereum is about 230th / s.
from the time dimension of the past two years, bitcoin's computing power of the whole network is growing rapidly, while Ethereum's computing power of the whole network is growing relatively slowly
The ASIC mining machine of 
bitcoin is monopolized by several major mining machine manufacturers, and miners can only buy it from the market; Although the graphics card miner of Ethereum is also manufactured by a special miner, the miner can buy accessories from the market and assemble them according to his own demand
although bitcoin and Ethernet are both digital currencies, unlike bitcoin, the main purpose of Ethernet is not to build itself as a payment substitute, but to facilitate and monetize the operation of Ethereum, so that developers can build and run distributed applications
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Company
entry conditions:
1. Legal, compliant and independent corporate entity registered in Greater China (mainland, Hong Kong and Taiwan)
2. There is no Amazon seller account in the target market
3
4. Promise to provide high-quality customer service
eBay entry requirements
1. Instrial and commercial tax information, no abnormal registered enterprises
2. To apply for an account, you need to pass the authentication of the seller's account on eBay and connect to the authenticated PayPal account
3. Prepare a al currency credit card (visa, MasterCard) to open online banking for future operation
4. It is better to sell after transnational certification
5. Data needed for transnational authentication: ID card data, personal recent photo, address proof data (address proof should be consistent with registered address)
6. Use Hotmail, Gmail, 163 and other international e-mails as registered e-mails to ensure the smooth acceptance of e-mails from eBay and overseas buyers
wish entry requirements
1. Platform sellers or traders:
A. domestic: JD / tmall / Taobao and other domestic mainstream platform sellers
B. International: cross border third-party platform sellers
C. cross border independent station sellers
2. Factories: factories that can provide high-quality procts and have greater strength
recruitment objects (priority): ① high-quality peer sellers, ② high-quality brand sellers, ③ high-quality instry and trade parties
entry requirements of Lanting Jishi
1. Entry data requirements:
(1) business license
(2) organization code
(3) tax registration certificate number
(4) deposit bank license
entry requirements of Dunhuang website
Personal sellers need to provide photos on the front and back of hand-held ID card; 2. If it is an enterprise, the business license is legal, authentic and valid; 3. Front and back photos of corporate ID card; 4. If there is a trademark or authorized proct, the trademark registration certificate and power of attorney shall be complete; 5. Some entry categories need to be provided with relevant qualification; 6. New sellers need to pay platform usage fee, 299 yuan per quarter; 598 yuan for half a year; One year: 999 yuan (one out of three)
entry requirements of Newegg
1. Priority entry criteria
focus on 3C procts; Amazon / eBay / lazada and other platforms have Gmv of more than $500000 per month or top 10 best-selling SKUs in their sub categories; Sellers with international famous brands; In the stores of Amazon or other similar platforms, it has won 1000 + user reviews
2. General entry criteria
have proct categories suitable for Newegg platform / customer group; Have their own e-commerce operation team; Have the store opening experience of asun / eBay / lazada (or other similar platforms); Be able to operate seller's account and / or have special account manager to handle account operation
settlement process:
1. Application for settlement: send the settlement application to Newegg, and after passing the preliminary review, the seller's account manager will send the settlement invitation to the seller
2. Account registration: provide login information, basic account information, business license and W-8 form according to the registration link of the invitation email
3. Collection information: enter the seller management system seller portal to determine the collection method and improve the collection information. If you choose to use wire transfer, you need to provide bank credit certificate or void check
4. Distribution information: configure appropriate distribution methods, return processing information and warehousing configuration
5. Create procts: the seller should first try to create 1-5 procts, submit them to the account manager for review, and complete the review within 1 working day
6. Account activation: the account manager comprehensively reviews the key information set by the seller, and completes and activates the seller's account in 1-2 working days
7. Proct activation: after account activation, the seller's procts will be activated, and consumers in 52 countries around the world will be able to buy the seller's procts.
the graphics card itself can be regarded as a small computer, the display core is equivalent to CPU, and the video memory is equivalent to memory. The CPU is naturally the most important, and the memory size obviously can not fundamentally affect the overall performance
top level graphics cards usually have 4G to 6G graphics memory
high end graphics cards usually have 2G to 4G graphics memory
middle end graphics cards usually have 1g to 2G graphics memory
low end graphics cards usually have 512M to 1g graphics memory