How about bitcoin Ethereum
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
The user groups of Ethernet and bitcoin are different
for a long time, Ethernet has been known as a strong competitor of bitcoin. It wasn't until Andreas antonopoulos claimed that Ethernet was no longer a competitor of bitcoin, which triggered a heated discussion on social networks
people begin to compare the two and discuss the differences in investment and transaction between the two digital currencies< According to Chris burniske, analyst and blockchain proct director of ark investment management company, bitcoin is more used for hedging, while Ethereum, which relies on Ethereum to execute smart contracts, is more seen as a trading tool
bitcoin and Ethereum systems are built on the basis of blockchain, in which transactions are recorded publicly, making currency and asset transactions more convenient and preferential, eliminating the cumbersome middleman
in December 2015, the price of Ethernet currency was less than US $1, but now it has risen to US $15, nearly 15 times in just six months. This achievement is attributed to Ethereum, whose financial contracts are completely executed by software, which has attracted a large number of users to invest
with the previous example of Ethereum, the success of Dao (decentralized autonomous organization) is no surprise. The crowdfunding platform supported by Ethereum raised nearly $150 million from more than 10000 anonymous users. Each participant is given the right to vote, they can allocate funds, choose projects, once the investment project is successful, they can also get a certain degree of dividend reward< There are 670 bitcoin ATMs in the world, and thousands of outlets support bitcoin payment. Unlike bitcoin, Ethereum has not yet emerged in the field of electronic payment. At present, the main purpose of Ethereum is to support Ethereum network (such as Dao) to run programs
David ccini, executive director of the strength in numbers foundation, said:
users' expectations of Ethernet are different from those of bitcoin. Both cryptocurrencies can be used for speculation, but the original function of Ethernet currency is to support the operation of applications. Therefore, users need enough Ethernet coins to run their own app. This is also the problem faced by Dao - unless Dao can continuously generate new Ethernet coins, the payment platform will be in danger of outage.
Ethereum is an open-source public blockchain platform with smart contract function. It mainly provides decentralized virtual machine to process point-to-point contracts through its special encrypted currency Ethereum, which is fast and unlimited in quantity. In other words, it is a monetary payment system, but their functions and purposes are different
if bitcoin is considered to be a shared global book that securely records all bitcoin bills. Then Ethereum is to maintain a shared computing platform, which can flexibly and safely run any program users want. Because of this, many countries and enterprises are developing how to use Ethereum technology in the real world.
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