--- title: Bitcoin Mining Faces Profitability Crisis Amid New Efficient Hardware Launches canonical: https://mining-provider.com/bitcoin-mining-faces-profitability-crisis-amid-new-efficient-hardware-launches/ author: Mining Provider Editorial Staff published: 2026-04-08 updated: 2026-04-08 language: en category: News description: Bitcoin mining is becoming unprofitable, especially for those with outdated hardware, while Bitdeer's new Sealminer A4 series offers energy-efficient solutions to help miners. Additionally, BTQ Technologies asserts that quantum computers currently pose no immediate threat to Bitcoin mining but emphasizes the need for future-proof security measures. source: Provimedia GmbH --- # Bitcoin Mining Faces Profitability Crisis Amid New Efficient Hardware Launches > **Autor:** Mining Provider Editorial Staff | **Veröffentlicht:** 2026-04-08 **Zusammenfassung:** Bitcoin mining is becoming unprofitable, especially for those with outdated hardware, while Bitdeer's new Sealminer A4 series offers energy-efficient solutions to help miners. Additionally, BTQ Technologies asserts that quantum computers currently pose no immediate threat to Bitcoin mining but emphasizes the need for future-proof security measures. --- ## Bitcoin Mining Becomes an Unprofitable Business According to a recent article from Finanz und Wirtschaft, the profitability of Bitcoin mining is under significant pressure. The article highlights that the Bitcoin hash price has been under strain since the halving event in April 2024, which reduced block rewards from 6.25 BTC to 3.125 BTC. This reduction has severely impacted the margins for miners using older, less efficient hardware. > "The current market conditions are making it increasingly difficult for miners to maintain profitability." - Finanz und Wirtschaft As a result, many miners are facing challenges in sustaining their operations, leading to a potential decline in the overall mining industry. **Key Takeaway:** The profitability of Bitcoin mining is declining, particularly for those using outdated hardware. ## Sealminer A4 Series Debuts with Efficiency Record Bitdeer Technologies Group has launched its Sealminer A4 series, which includes the flagship model, the A4 Ultra Hydro, achieving an energy consumption of 9.45 Joules per Terahash (J/TH). This model is among the most energy-efficient devices announced by a major manufacturer to date, significantly outperforming the previous A3 series, which had an efficiency of 12.5 J/TH. The A4 Ultra Hydro delivers 886 Terahash per second (TH/s) at 9.45 J/TH, while the A4 Pro Hydro and A4 Pro Air models provide 680 TH/s at 10.9 J/TH and 336 TH/s at 10.9 J/TH, respectively. This advancement is crucial for miners struggling with tight margins post-halving. | Model | Hashrate (TH/s) | Power Consumption (W) | Efficiency (J/TH) | | A4 Ultra Hydro | 886 | 8,372.7 | 9.45 | | A4 Pro Hydro | 680 | 7,412 | 10.9 | | A4 Pro Air | 336 | 3,662.4 | 10.9 | Bitdeer aims to compete directly with established hardware manufacturers like Bitmain and MicroBT, marking a significant step in their development of mining hardware. **Key Takeaway:** The Sealminer A4 series introduces highly efficient mining rigs, crucial for miners facing profitability challenges. ## BTQ Technologies: Quantum Mining Debunked A recent analysis by BTQ Technologies reveals that quantum computers do not pose an immediate threat to Bitcoin mining. The study indicates that the physical and economic barriers to such attacks are currently insurmountable, with a competitive operation requiring around 100 million physical qubits and an energy supply of 10,000 megawatts. Instead, BTQ Technologies is focusing on securing digital signatures against future quantum attacks, emphasizing the need for post-quantum cryptography (PQC) to protect blockchain transactions. > "The idea that quantum computers could render Bitcoin mining obsolete is currently more science fiction than reality." - BTQ Technologies BTQ is also advancing its commercial roadmap, with plans to release validated FPGA-IP for early partners by Q2 2026 and developer boards by Q3 2026. **Key Takeaway:** Quantum mining is not a current threat, but BTQ Technologies is proactively addressing potential future vulnerabilities in blockchain security. Sources: - [Bitcoin Mining wird zum unrentablen Business](https://www.fuw.ch/bitcoin-mining-wird-zum-unrentablen-business-623421713034) - [Die Sealminer A4-Serie feiert ihr Debüt, während Bitdeer einen neuen Effizienzrekord beim Bitcoin-Mining aufstellt](https://news.bitcoin.com/de/die-sealminer-a4-serie-feiert-ihr-debuet-waehrend-bitdeer-einen-neuen-effizienzrekord-beim-bitcoin-mining-aufstellt/) - [BTQ Aktie: Quanten-Mining entzaubert](https://www.ad-hoc-news.de/boerse/ueberblick/btq-aktie-quanten-mining-entzaubert/69097266) --- *Dieser Artikel wurde ursprünglich veröffentlicht auf [mining-provider.com](https://mining-provider.com/bitcoin-mining-faces-profitability-crisis-amid-new-efficient-hardware-launches/)* *© 2026 Provimedia GmbH*