{
  "$schema": "https://degreesofsatoshi.com/encyclopedia/schemas/article-v1.json",
  "schemaVersion": "1.0.0",
  "id": "bitcoin-mining-hardware",
  "canonical": "https://degreesofsatoshi.com/encyclopedia/bitcoin-mining-hardware/",
  "collection": "bitcoin",
  "title": "Bitcoin mining hardware: hash rate, power and ASIC efficiency",
  "description": "Read Bitcoin mining hardware specifications: hash rate, wall power, energy efficiency and the practical limits of a rated performance figure.",
  "aliases": [
    "bitcoin mining hardware ASIC",
    "bitcoin mining hardware ASIC explained"
  ],
  "dates": {
    "published": "2026-10-02",
    "modified": "2026-10-02",
    "verified": "2026-10-02T19:29:20.637Z",
    "dataAsOf": "2026-10-02"
  },
  "authorship": {
    "publisher": "Degrees of Satoshi editorial project",
    "process": "AI-assisted research and drafting with a separate automated source-verification pass; no external expert or named human review is implied."
  },
  "quickAnswer": {
    "text": "Bitcoin mining hardware repeatedly hashes candidate block headers. Purpose-built machines, called ASICs, are designed for that work. Compare hash rate, power measured at the wall, efficiency and operating requirements together. A higher hash rate does not by itself establish lower electricity cost per unit of work, and no specification guarantees mining revenue or profit.",
    "claimId": "bitcoin-mining-hardware-quick-answer",
    "sourceIds": [
      "x425-btc-dev-mining",
      "x425-btc-bitmain-s21"
    ]
  },
  "keyFacts": [
    {
      "label": "Hash rate",
      "value": "The rate of candidate hash calculations",
      "sourceIds": [
        "x425-btc-dev-mining"
      ],
      "id": "hash-rate",
      "claimId": "bitcoin-mining-hardware-fact-hash-rate"
    },
    {
      "label": "Wall power",
      "value": "Electrical demand under stated conditions",
      "sourceIds": [
        "x425-btc-bitmain-s21"
      ],
      "id": "wall-power",
      "claimId": "bitcoin-mining-hardware-fact-wall-power"
    },
    {
      "label": "Efficiency",
      "value": "Joules per terahash; lower uses less energy per work",
      "sourceIds": [
        "x425-btc-bitmain-s21"
      ],
      "id": "efficiency",
      "claimId": "bitcoin-mining-hardware-fact-efficiency"
    }
  ],
  "prerequisites": [
    "how-bitcoin-mining-works",
    "bitcoin-hash-rate"
  ],
  "sections": [
    {
      "id": "ratings",
      "heading": "Read the conditions attached to the numbers",
      "sourceIds": [
        "x425-btc-bitmain-s21"
      ],
      "paragraphs": [
        "BITMAIN’s March 2025 S21 guide lists a 200 TH/s variant with typical wall power of 3,500 W and efficiency of 17.5 J/TH at 25°C inlet temperature. This is a dated manufacturer example, not a current buying recommendation.",
        "The guide gives hash-rate variation of ±3% and wall-power and efficiency variation of ±5%. It also specifies electrical and environmental requirements. Do not treat a typical rating as a guaranteed measurement in every installation."
      ]
    },
    {
      "id": "example",
      "heading": "Convert power into energy before pricing electricity",
      "sourceIds": [
        "x425-btc-bitmain-s21"
      ],
      "paragraphs": [
        "At a constant 3,500 W, a hypothetical machine uses 3.5 kW × 24 hours = 84 kWh per day. At an assumed energy price of 0.10 currency units per kWh, that is 8.40 currency units per day for the machine’s electricity.",
        "The example excludes cooling, other equipment, downtime, demand charges and purchase costs. Dividing 3,500 W by 200 TH/s gives 17.5 joules per terahash, matching the stated typical efficiency."
      ]
    },
    {
      "id": "work",
      "heading": "Hardware also needs a valid mining job",
      "sourceIds": [
        "x425-btc-dev-mining",
        "x425-btc-stratum-overview"
      ],
      "paragraphs": [
        "A hashing device needs software to supply candidate work and submit results. It does not independently decide every transaction or guarantee that a successful-looking result will be accepted by the network.",
        "Distinguish local machine performance from accepted work credited by a pool. Connection problems or stale jobs can reduce useful submitted work even while fans run and the device reports a high hash rate."
      ]
    }
  ],
  "faq": [
    {
      "question": "Does twice the hash rate always mean twice the profit?",
      "answer": "No. Hash rate describes work, while profit also depends on electricity and other costs, network conditions and the reward arrangement. Compare actual costs and accepted work rather than extrapolating a profit claim from a device label.",
      "sourceIds": [
        "x425-btc-dev-mining",
        "x425-btc-pool-schemes"
      ]
    },
    {
      "question": "Are watts and kilowatt-hours interchangeable?",
      "answer": "No. Watts measure power; kilowatt-hours measure energy over time. A constant 3.5 kW load consumes 3.5 kWh in one hour and 84 kWh in 24 hours.",
      "sourceIds": [
        "x425-btc-bitmain-s21"
      ]
    }
  ],
  "claims": [
    {
      "id": "bitcoin-mining-hardware-quick-answer",
      "articleSlug": "bitcoin-mining-hardware",
      "statement": "Bitcoin mining hardware repeatedly hashes candidate block headers. Purpose-built machines, called ASICs, are designed for that work. Compare hash rate, power measured at the wall, efficiency and operating requirements together. A higher hash rate does not by itself establish lower electricity cost per unit of work, and no specification guarantees mining revenue or profit.",
      "sourceIds": [
        "source-d5271fde58f8f665",
        "source-030ca0d60e0a17f4"
      ],
      "sourceLocators": [
        {
          "sourceId": "source-d5271fde58f8f665",
          "locator": "Mining; Solo Mining; Pool Mining; Block Prototypes"
        },
        {
          "sourceId": "source-030ca0d60e0a17f4",
          "locator": "Section 1.2 Server Specification, printed pages 4–5: Table 1-1 Product Glance, Table 1-2 Detailed Characteristics of Product and notes"
        }
      ],
      "scope": {
        "collection": "bitcoin",
        "dataAsOf": "2026-10-02",
        "blockHeight": null
      },
      "qualification": "Educational explanation. Product-specific behavior is scoped to the cited documentation, checked 2026-10-02.",
      "evidenceStatus": "documented",
      "verification": {
        "status": "verified",
        "method": "independent automated source review",
        "checkedAt": "2026-10-02T19:29:20.637Z",
        "reviewer": "Independent automated verification — Codex /root/verify_ethereum_100, separate from the Bitcoin drafting agent",
        "notes": [
          "Checked BITMAIN S21 March2025 guide printedpp4–5 table/notes:200TH/s,3500W,17.5J/TH at25°C,±3%hashrate and±5%power/efficiency.84kWh/day and8.40illustrative energy cost checked with exclusions. No buying or profit guarantee is stated."
        ]
      }
    },
    {
      "id": "bitcoin-mining-hardware-fact-hash-rate",
      "articleSlug": "bitcoin-mining-hardware",
      "statement": "Hash rate: The rate of candidate hash calculations",
      "sourceIds": [
        "source-d5271fde58f8f665"
      ],
      "sourceLocators": [
        {
          "sourceId": "source-d5271fde58f8f665",
          "locator": "Mining; Solo Mining; Pool Mining; Block Prototypes"
        }
      ],
      "scope": {
        "collection": "bitcoin",
        "dataAsOf": "2026-10-02",
        "blockHeight": null
      },
      "qualification": "",
      "evidenceStatus": "documented",
      "verification": {
        "status": "verified",
        "method": "independent automated source review",
        "checkedAt": "2026-10-02T19:29:20.637Z",
        "reviewer": "Independent automated verification — Codex /root/verify_ethereum_100, separate from the Bitcoin drafting agent",
        "notes": [
          "Checked BITMAIN S21 March2025 guide printedpp4–5 table/notes:200TH/s,3500W,17.5J/TH at25°C,±3%hashrate and±5%power/efficiency.84kWh/day and8.40illustrative energy cost checked with exclusions. No buying or profit guarantee is stated."
        ]
      }
    },
    {
      "id": "bitcoin-mining-hardware-fact-wall-power",
      "articleSlug": "bitcoin-mining-hardware",
      "statement": "Wall power: Electrical demand under stated conditions",
      "sourceIds": [
        "source-030ca0d60e0a17f4"
      ],
      "sourceLocators": [
        {
          "sourceId": "source-030ca0d60e0a17f4",
          "locator": "Section 1.2 Server Specification, printed pages 4–5: Table 1-1 Product Glance, Table 1-2 Detailed Characteristics of Product and notes"
        }
      ],
      "scope": {
        "collection": "bitcoin",
        "dataAsOf": "2026-10-02",
        "blockHeight": null
      },
      "qualification": "",
      "evidenceStatus": "documented",
      "verification": {
        "status": "verified",
        "method": "independent automated source review",
        "checkedAt": "2026-10-02T19:29:20.637Z",
        "reviewer": "Independent automated verification — Codex /root/verify_ethereum_100, separate from the Bitcoin drafting agent",
        "notes": [
          "Checked BITMAIN S21 March2025 guide printedpp4–5 table/notes:200TH/s,3500W,17.5J/TH at25°C,±3%hashrate and±5%power/efficiency.84kWh/day and8.40illustrative energy cost checked with exclusions. No buying or profit guarantee is stated."
        ]
      }
    },
    {
      "id": "bitcoin-mining-hardware-fact-efficiency",
      "articleSlug": "bitcoin-mining-hardware",
      "statement": "Efficiency: Joules per terahash; lower uses less energy per work",
      "sourceIds": [
        "source-030ca0d60e0a17f4"
      ],
      "sourceLocators": [
        {
          "sourceId": "source-030ca0d60e0a17f4",
          "locator": "Section 1.2 Server Specification, printed pages 4–5: Table 1-1 Product Glance, Table 1-2 Detailed Characteristics of Product and notes"
        }
      ],
      "scope": {
        "collection": "bitcoin",
        "dataAsOf": "2026-10-02",
        "blockHeight": null
      },
      "qualification": "",
      "evidenceStatus": "documented",
      "verification": {
        "status": "verified",
        "method": "independent automated source review",
        "checkedAt": "2026-10-02T19:29:20.637Z",
        "reviewer": "Independent automated verification — Codex /root/verify_ethereum_100, separate from the Bitcoin drafting agent",
        "notes": [
          "Checked BITMAIN S21 March2025 guide printedpp4–5 table/notes:200TH/s,3500W,17.5J/TH at25°C,±3%hashrate and±5%power/efficiency.84kWh/day and8.40illustrative energy cost checked with exclusions. No buying or profit guarantee is stated."
        ]
      }
    }
  ],
  "sources": [
    {
      "id": "x425-btc-dev-mining",
      "label": "Mining",
      "publisher": "Bitcoin developer documentation",
      "url": "https://developer.bitcoin.org/devguide/mining.html",
      "locator": "Mining; Solo Mining; Pool Mining; Block Prototypes",
      "note": "Hardware work, candidate blocks and pool shares; historical examples are not current equipment recommendations.",
      "version": "Developer guide; historical implementation details require qualification",
      "checkedAt": "2026-10-02T18:53:53.955Z",
      "contentSha256": "543e25621d1ef8d36da57d86b94ee8196b156ff4c0c3a6e3d071933f1a632b17",
      "recordId": "source-d5271fde58f8f665"
    },
    {
      "id": "x425-btc-bitmain-s21",
      "label": "S21 User Guide",
      "publisher": "BITMAIN",
      "url": "https://assets-product.bitmain.com.cn/shop-product-s3/firmware/c17a60d7-51c8-41a3-8365-b7e5d1506caa/2025/04/10/14/S21%20User%20Guide-V1.2.5.pdf",
      "locator": "Section 1.2 Server Specification, printed pages 4–5: Table 1-1 Product Glance, Table 1-2 Detailed Characteristics of Product and notes",
      "note": "Manufacturer-rated SHA-256 hash rate, wall power, efficiency and conditions; used as a dated equipment example.",
      "version": "S21 User Guide V1.2.5; not a buying recommendation",
      "checkedAt": "2026-10-02T18:55:07.160Z",
      "contentSha256": "16549666a187600b51001e7244fbb5da3e5961fa9ae88a939d2e5d694188d019",
      "recordId": "source-030ca0d60e0a17f4"
    },
    {
      "id": "x425-btc-stratum-overview",
      "label": "Protocol Overview",
      "publisher": "Stratum V2 specification",
      "url": "https://stratumprotocol.org/specification/03-protocol-overview/",
      "locator": "3. Protocol Overview: Mining Protocol, Job Declaration Protocol, Template Distribution Protocol and roles",
      "note": "Separate mining, job declaration and template distribution protocols.",
      "checkedAt": "2026-10-02T18:53:58.669Z",
      "contentSha256": "bf6115d24c6c10b56043a8d16fb482ea744496889e6fb36916800e6262af14fe",
      "recordId": "source-394deea2671f4cfb",
      "version": null
    },
    {
      "id": "x425-btc-pool-schemes",
      "label": "Can you make money as a Bitcoin miner?",
      "publisher": "f2pool",
      "url": "https://f2pool.io/mining/insights/20200903-make-money-bitcoin-miner/",
      "locator": "Mining pool selection: PPS, PPLNS, FPPS and PPS+ definitions; mining economics and cost qualifications",
      "note": "Historical 2020 account of payout method mechanics. Historical prices, subsidies, pool fees and product recommendations are not current facts.",
      "version": "Published 2020-09-03; historical payout-method mechanics and mining cost categories only",
      "checkedAt": "2026-10-02T19:11:55.963Z",
      "contentSha256": "32faccb360b8cf033ab0d1d405880f49565770aac343f1af2721a703d5be7c1e",
      "recordId": "source-3ad0f31ed0474c29"
    }
  ],
  "related": {
    "articles": [
      "how-bitcoin-mining-works",
      "bitcoin-hash-rate",
      "bitcoin-energy-consumption",
      "bitcoin-pool-payout-methods"
    ],
    "dossiers": [],
    "wallets": []
  },
  "revisionHistory": [
    {
      "date": "2026-10-02",
      "kind": "published",
      "summary": "First publication after primary-source research and separate automated verification."
    }
  ],
  "citation": "Degrees of Satoshi editorial project. “Bitcoin mining hardware: hash rate, power and ASIC efficiency.” Published 2026-10-02; updated 2026-10-02. https://degreesofsatoshi.com/encyclopedia/bitcoin-mining-hardware/"
}