The analysis for 2025 shows that profits in ASIC mining were generated from Bitcoin mining. Data on equipment, network difficulty, and exchange rates indicate that alternative coins on the SHA-256 algorithm had no significant impact on the mining economy.

Throughout the year, the choice was not about selecting a coin, but rather about choosing a specific ASIC model. This is indicated by the results of the analysis from Intelion Data Systems, which are at the disposal of the BeInCrypto editorial team.

Leaders in profitability

The devices of the Bitmain Antminer S21 line showed the highest percentage yield in 2025. The high result was maintained throughout the year, not just during certain favorable periods.

The highest profitability indicators for the year:

  • Bitmain Antminer S21 PRO 234 TH/s — 62.93%

  • Bitmain Antminer S21+ 235 TH/s — 62.86%

  • Bitmain Antminer S21+ 225 TH/s — 62.81%

The S21+ model at 235 TH/s frequently appeared in monthly profitability rankings. This dynamic indicates the device's stable economy under varying network difficulty and exchange rate fluctuations.

Maximum mining volume

The Bitmain Antminer S21 XP 270 TH/s deserves special attention. In 2025, this model achieved the highest volume of mined asset — 0.05015574 BTC for the year. The percentage yield was 56.89% annually, which is lower than the leaders in this indicator but higher than the market average.

The market has effectively divided over the year. Some models have been focused on maximizing profitability, while others have aimed at accumulating a larger volume of bitcoin.

MicroBT Whatsminer devices in 2025 demonstrated more restrained but stable results. The profitability of the M60S+ and M61S+ series models ranged approximately 55–59% annually.

In terms of profitability, these ASICs lagged behind the S21 line, but positive economics were maintained throughout the year.

Factors affecting profit

The key factor was the growth of network difficulty. In January 2025, the indicator was 110,451,907,374,650, and by the end of December, it increased to 148,258,433,855,481. The growth over the year was about 34%.

Such dynamics reduced the mining efficiency per unit of power. Profitability was maintained only by modern and energy-efficient models, while older equipment gradually lost economic sense even with moderate placement costs.

Which ASICs remain relevant in 2026

There is currently no actual data on profitability for 2026. The results of 2025 allow us to highlight models that have already proven their stability in the face of increasing network difficulty.

The following remain in the operational range:

  • Bitmain Antminer S21 PRO

  • Bitmain Antminer S21+

  • Bitmain Antminer S21 XP

  • MicroBT Whatsminer M60S+

  • MicroBT Whatsminer M61S+

All listed devices demonstrated positive economics in 2025 and are designed to operate under increased competition.

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