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The drop in mining difficulty against the backdrop of the falling Bitcoin (BTC) exchange rate has enabled modern ASIC miners to demonstrate resilience and competitive profitability at the level of 18.48–27.21% per annum, according to data from mining data center operator Intelion. Experts compared the performance of 11 latest-generation devices from Bitmain and MicroBT and shared the research results with "RBC Crypto".
The leader in November was the Bitmain Antminer S21 XP 270 TH/s device, which for the first time in recent months topped the rating not only in terms of the volume of BTC mined but also in profitability. With a mining output of 0.00317115 BTC/month ($340), the device provided a profitability of 2.27% per month or 27.21% per annum. This result is particularly noteworthy given its higher cost compared to other models. In conditions of reduced network difficulty, the high performance of the S21 XP proved to be a critical factor that allowed it to take the lead.
TOP-5 ASIC Miners by Profitability in November 2025:
- Bitmain Antminer S21 XP 270TH/s — 2.27% per month / 27.21% per annum
- Bitmain Antminer S21 PRO 234 TH/s — 2.12% per month / 25.48% per annum
- Bitmain Antminer S21+ 235 TH/s — 1.92% per month / 23.03% per annum
- Bitmain Antminer S21+ 225 TH/s — 1.90% per month / 22.78% per annum
- MicroBT Whatsminer M60S+ 204 TH/s — 1.82% per month / 21.83% per annum
November significantly changed the balance of power within the top five most profitable devices. The only model that maintained a stable presence in the top-3 for two consecutive months was the Bitmain Antminer S21 PRO 234 TH/s. Models from the S21+ line also remained in the top five but moved down. A significant change was also the reduction in MicroBT's presence in the rating: out of two models in the Top-5, only one remained, reflecting the strengthening dominance of S21 series devices in the face of market correction.
In November, the actual range of first cryptocurrency mining among the tested devices was 0.00239598–0.00317115 BTC/month. As a result, most ASICs showed profitability in the range of 1.54–2.27% per month.
In November, bitcoin fell by 17%, and the mining difficulty dropped by 4.28%. At the beginning of the month, it was 155.97 T, and at the end — 149.30 T, according to Cloverpool. A drop in difficulty increases the profitability of cryptocurrency mining. This partially compensated for its decline caused by the fall in the bitcoin exchange rate.
As of 14:00 Moscow time on December 12, the price of the first cryptocurrency is fluctuating around $92K. Since the beginning of this month, BTC has added about 2%.
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