Antminer E3 will stop mining ETH and ETC soon, but Innosilicon A10 will not be affected

On February 24, the 2miners team revealed that there was still one month before Bitmain's E3 miners were forced to stop mining ETH and ETC. In the ETC network, the computing power of the E3 miners dropped sharply from the daily 180MH/S to 30MH/S. Not only that, other GPU chips with 4GB of video memory will also face the same problem. The team once published an analysis of the increasing size of DAG (directed acyclic graph) files under the EThash algorithm in November 2017, pointing out that in the future, as the number of blocks continues to increase, some low-memory miners will inevitably be eliminated.

What is a DAG file

(ETH mining diagram)

DAG is a data set under the Ethash algorithm, which is a directed acyclic graph. When the mining machine is started, the DAG file will first be uploaded to the GPU memory. As the blocks continue to increase, the file size will increase every 3,000 blocks. The file capacity will become larger and larger, and the speed of increase depends on the current block speed.

(Token DAG file size under common Ethash algorithm)

Among the current mainstream currencies, the DAG file sizes of ETH and ETC are close to 4GB, while the expansion project was launched later, so the current DAG file is not large.

How long can E3 be mined?

In April 2018, Bitmain released a blockbuster news on Twitter. Before that, the Ethash ASIC that everyone had been speculating about was here. Nvidia and AMD's business in Ethereum mining had just been booming, and a "beast" came to the market. Some people speculated that the ASIC version of E3 would be much more efficient than all current GPU mining, but the facts slapped their faces.

The computing power of 180MH/S is not much different from other GPUs. What is even more surprising is that E3 adopts an integrated GPU solution and uses 4GB of video memory like many graphics cards.

According to calculations, the block time of ETH is about 13s, the current block height is 9558942, and the DAG memory occupies 3.48GB. Because the graphics card memory has a buffer, it cannot be used 100% in practice. The available space of 4GB memory is about 3.8GB. The mining machine will also occupy about 200mb of space because it is connected to monitors and other devices, so the actual available space is about 3.6GB. We can calculate as follows:

Remaining memory: 3.6GB-3.48GB=120MB

The DAG file size is 8MB per cycle

120MB/8MB=15 cycles

13s*30000 blocks/60/60/24=4.51 days

ETH remaining days: 15 * 4.51 ≈ 67 days

Compared to E3, which has stopped working properly on the ETC network, it still has nearly two months to operate normally on the ETH network.

Innosilicon A10 is not affected yet

(Based on the Innosilicon A10 mining machine data on poolin.com official website)

In sharp contrast to the E3 is the Innosilicon A10 mining machine, which has a computing power of up to 500MH/S, but its power consumption is lower than that of the E3. After inquiring with the official customer service of Innosilicon, it was said that the A10 is not affected by the current problem of insufficient video memory caused by large DAG files because of its different design principles.

And currently, the daily income of A10 can reach about 55 yuan with an electricity fee of 0.38 yuan, which is comparable to the BTC mining machine Shemma M30S.

Interested friends can open the following website to calculate the estimated shutdown time of different video memory graphics cards due to DAG file size issues:

https://investoon.com/tools/dag_size

References

https://2miners.com/blog/antminer-e3-stops-mining-ethereum-classic-just-over-a-month-remaining-for-ethereum/

https://2miners.com/blog/when-will-my-graphics-card-stop-mining-ether/

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