Model G32-Mini from Innosilicon mining 2 algorithms (Cuckatoo31+, Cuckatoo32+) with a maximum hashrate of 21.5GPS for a power consumption of 140W. Later on, while cryptocurrrency mining became even more popular, miners switched to Application Specific Integrated Circuit (ASIC) miners These miners require little to no technical knowledge, are almost plug and play and most important of all, are very efficient at mining cryptocurrency.
The Antminer S9 (or S9i) is one of the most popular asic mining devices out there, and other mining hardware is often benchmarked against it. The S9 is also generally considered to be the most energy-efficient miner on the market today, although this will vary depending on electricity costs where you live and the type of PSU used with it (the latter must be purchased separately, although you can buy the S9i with PSU on Bitmain's site for an extra 90$).

He also noted that if Bitmain or any other company gained control of the majority of the Ethereum network and used it for an attack, the Ethereum developers could rush the rest of the protocol development and deploy a new algorithm in a week just to protect the network as a last ditch measure.
Standard-cell design is intermediate between § Gate-array and semi-custom design and § Full-custom design in terms of its non-recurring engineering and recurring component costs as well as performance and speed of development (including time to market ).
Some crypto enthusiasts have proposed an idea that seeks to level the playing field with a hashing algorithm like SHA-3 which is easier to implement on mining hardware than the SHA-256, and it's likely to force all companies developing ASIC miners to start from the scratch.

Even though it was designed to mine the Bitcoin, there were other SHA-256 coins that could be mined with it. It was proven quite vividly that the ASIC chips are better than the FPGAs, GPUs, and CPU combination when it comes to the speed of mining and the hash rate.
Unlike the manufacture of other computer equipment, pricing for cryptocurrency mining equipment is based on the profit it can generate as a money-printing device, not on the cost of underlying materials like the conventional computer hardware industry.

Nevertheless, when a designer makes claims regarding hash rates at certain clock frequencies, one can determine if A. there is a straightforward calculation and B. if the designer is being imprecise (rounding values) or even intentionally dishonest, as the ratio between clock cycles and hash rate should remain the same.
A range of factors, including unequal access to cheap electricity, cheap labor, and backdoor deals with regulators will give some large mining businesses a competitive advantage over smaller mining operations, regardless of whether ASICs are involved or not, he argued.

Furthermore, because of their direct access to cheap hardware they can also dominate mining on the network, much like Bitmain and Canaan already do with Bitcoin Right now, there is strong evidence that the two mining juggernauts control between 25-50 percent of the SHA-256 mining hashrate based on correspondences between CryptoSlate and representatives at the companies.
One major cryptocurrency which is using CryptoNight hash function is about to change their PoW algorithm, and according to their public statement, it is purposely to brick ASIC mining rigs including X3. All about ASIC mining hardware. Bitmain Antminer D5 Gh. Innosilicon A8C CryptoMaster.