For now, with ETH 2.0 coming, it is risky to buy a custom machine to mine Ethereum. Therefore, it is recommended that miners choose the assembled mining machine.

Due to the Ethash algorithm mechanism of Ethereum, it is necessary to read memory and store DAG files for continuous mining, not depending on the computational efficiency of the computer, but memory access efficiency. Therefore, Ethereum mining mainly relies on GPU mining machine.

·Graphics Card

Ethereum graphics cards are mainly A card (AMD graphics card) and N card (Nvidia graphics card), the leading independent graphics card manufacturers are only AMD and Nvidia, both of them monopolize the design of the most core GPU chips.

In addition to these two manufacturers, Intel also makes "core graphics cards", or GPUs integrated into the CPUs, which are not suitable for mining.

·GPU Mining Machine

Generally, there are two ways to obtain GPU mining machine, one is to buy custom machine, and the other is to buy graphics card and platform for assembling.

Custom GPU mining machine is also the brand machine, and the mainstream GPU mining machines in the industry are GreatWolf Miner’s mining machine, Innosilicon’s mining machine, Panda Miner’s mining machine, etc. Custom GPU mining machines are characterized by mining machine manufacturers partnering with graphics card processing manufacturers to produce graphics cards that meet their requirements. This kind of graphics card generally only retains some functions necessary for mining, and other functions irrelevant to mining will be emasculated. Therefore, custom GPU mining machines have no other use except for mining. However, the advantages of GPU mining machine lie in their better stability, lower O&M threshold and more convenient usage. Assembled GPU mining machine generally use normal graphics cards, which, even if not used for mining, can also be recycled in the gaming and other industries, with a higher residual value. Assembled GPU mining machine consist of three parts, namely, graphics card, and platform and power source. The platform integrates motherboard, memory bank, and hard disk, the platform is equipped with graphics card and can be used for mining by connecting to the power supply.

·How to buy an Ethereum mining machine?

For now, with ETH 2.0 coming, it is risky to buy a custom machine to mine Ethereum. Therefore, it is recommended that miners choose the assembled mining machine. The assembled GPU mining machine has a higher residual value and is a safety cushion and an important revenue component for miners.

On condition that the recovery period is basically the same, try to choose first-tier graphics card brands with higher performance and more recent release time, which have higher residual value. If you have to choose between A card and N card, N card is preferred, because N card has more digital currencies to mine, and if you don't mine Ethereum coins, there are more other options.

Of course, in the upcoming special period of ETH 2.0, we suggest that miners choose to rent mining machines or cloud hashrate for mining, which can reduce the risk to the greatest extent.