Bitmain Antminer S21 (200Th) Antminer S21 200T

200 TH/s SHA-256 at 3,550W wall draw and 17.5 J/TH efficiency on Bitmain's BM1368 5nm chip architecture. ±3 percent hashrate and ±5 percent power tolerance per Bitmain official specification. Released February 2024. This is the base tier of the S21 generation hierarchy that also includes the S21 PRO (234 TH/s), S21+ (235 TH/s), and S21 XP (270 TH/s).

The S21 PRO delivers 234 TH/s at 3,510W and 15 J/TH for $3,083, while the base S21 delivers 200 TH/s at 3,550W and 17.5 J/TH for $1,402 used or $1,755 Plug and Play. The PRO produces 17 percent more hashrate at 17 percent better efficiency for 76 to 120 percent more CapEx. At $0.08 per kWh, the S21 base produces +$0.75 daily profit versus the PRO at +$1.87 daily. The PRO daily profit advantage pays back its CapEx premium over the S21 base in approximately 3.2 to 4.1 years. For shorter deployment horizons or operators with cheap electricity, the base S21 wins on CapEx efficiency. For longer deployments or expensive electricity, the PRO efficiency compounds to meaningful savings.

The S21 XP delivers 270 TH/s at 3,645W and 13.5 J/TH for $4,051, while the base S21 delivers 200 TH/s at 3,550W and 17.5 J/TH for $1,402 used or $1,755 Plug and Play. The XP produces 35 percent more hashrate at 23 percent better efficiency for 131 to 189 percent more CapEx. At $0.08 per kWh, the S21 base produces +$0.75 daily profit versus the XP at +$3.81 daily. The XP is the premium option with substantially better economics at any electricity rate. The base S21 is the budget entry point. Buyers comparing them make an explicit CapEx versus OpEx trade off: save $2,296 to $2,649 per unit acquisition cost on the base S21, but accept approximately $3 less daily profit per unit.

200 to 240V AC single phase at 20A maximum current via P13-C20 power cord. At 3,550W the unit draws approximately 16 amps continuous at 220V. Compatible with 220V residential outlets used for electric dryers and ovens, 240V commercial service, or industrial 220 to 277V service. Requires dedicated 20A circuit. Commercial 220V+ circuits required for deployment. Verify electrical service at the deployment site before purchasing if 220V is not already available.

Used at $1,402.23 is $352 cheaper than Plug and Play Ready at $1,755, a 25 percent premium for the verified configuration. Used units may have cosmetic wear, potentially reduced remaining warranty, and should be inspected before production deployment. Plug and Play Ready units are tested and verified for immediate deployment with the full 365-day Bitmain factory warranty. For buyers with technical expertise willing to inspect hardware, verify hashrate stability, and potentially refurbish components, the Used option produces $7.01 per terahash acquisition cost. For buyers prioritizing immediate deployment with full warranty coverage and minimum technical friction, Plug and Play Ready at $8.78 per terahash is the safer path.

Profitable at industrial and low residential electricity rates, marginal at typical residential rates. MillionMiner calculator at $0.08 per kWh shows +$0.75 daily profit, +$22.50 monthly, +$274 annually. Mining Now at $0.07 per kWh shows +$1.23 daily, +$36.90 monthly, +$448.95 annually. At $0.05 per kWh industrial hosting rates: approximately +$2.78 daily, +$83 monthly, +$1,014 annually. Break even electricity rate at current Bitcoin pricing is approximately $0.085 per kWh. Payback at Used pricing and $0.08 per kWh is approximately 5.1 years; at $0.05 per kWh approximately 1.4 years. The S21 base is positioned for CapEx-efficient deployment at industrial electricity access, not for profit maximization at residential rates.

Yes. BraiinsOS+ supports the full S21 series including the base model. The firmware provides autotuning that automatically optimizes chip voltage and frequency for target efficiency, per-chip performance data, advanced pool management, and comprehensive monitoring. Operators using BraiinsOS+ on S21 hardware typically achieve 2 to 5 percent efficiency improvements over stock Bitmain firmware, pushing the S21 from 17.5 J/TH toward 16.5 to 17 J/TH. Vnish firmware is another third party option. The Antminer firmware ecosystem is the most developed in the ASIC mining industry, with extensive community documentation and support. Note that installing third party firmware may affect manufacturer warranty coverage.

75 dB from four cooling fans at peak operation. Standard industrial ASIC noise comparable to a vacuum cleaner or busy restaurant. Same noise profile as the S21 PRO, S21 XP, S23, and most current generation air cooled Bitcoin miners. Requires dedicated mining space: warehouse, shipping container, garage with sound isolation, dedicated outbuilding, or professional hosting facility. Not suitable for shared residential spaces, apartments, or offices with neighboring occupants. Fan RPM and therefore noise scales with ambient temperature: deployment in hotter environments produces higher noise as fans work harder to maintain chip temperatures.

400 x 195.5 x 290 mm miner dimensions at 13.5 kg net weight. Standard Antminer chassis format compatible with existing S19 and S21 series rack configurations and mining shelves. Single person handling with appropriate lifting technique. Fits standard 4U rack mount configurations or open mining shelving without specialized hardware. Packaged shipping weight approximately 17 kg including PSU and packaging materials.

5 to 45 degrees Celsius ambient operating range at 5 to 95 percent humidity tolerance per Bitmain official documentation. Operating temperature maximum decreases by 1°C per 300 meter elevation increase above 900 meters per Bitmain's altitude guidance. For deployment in hot climates such as the UAE, Texas summer, Arizona, or tropical regions, ambient cooling infrastructure must hold intake air below approximately 40°C at peak load to maintain consistent hashrate. Fan RPM increases substantially as ambient temperature approaches the 45°C upper limit, raising noise and reducing component lifespan.

All SHA-256 proof of work cryptocurrencies. Bitcoin (BTC) is the primary target. Bitcoin Cash (BCH), Bitcoin SV (BSV), eCash (XEC), Fractal Bitcoin (FB), and other SHA-256 chains are also mineable. AuxPoW merged mining is available through compatible pools such as RSK (Rootstock) alongside Bitcoin, providing supplementary rewards at zero additional hashrate cost. Most operators mine Bitcoin directly at major pools for maximum revenue stability. Alternative SHA-256 chains occasionally deliver higher per-hashrate revenue during specific market conditions, making pool-switching strategies viable for operators with flexible configurations.

نعم. يأتي جهاز S21 مزودًا بوحدة طاقة مرفقة تتناسب مع حمولة مصنفة تبلغ 3550 واط، بالإضافة إلى سلك الكهرباء P13-C20. محتويات العلبة حسب MillionMiner: وحدة أنتمينر S21، وحدة تزويد الطاقة (PSU)، كابلات الطاقة، ودليل البدء السريع. قد تختلف المحتويات حسب الدفعة، مع ذكر العناصر الدقيقة في تأكيد الطلب. تزيل وحدة تزويد الطاقة المرفقة قرار اختيار وحدة طاقة خارجية ومشاكل توافق الموديلات. قد يختلف تضمين وحدة تزويد الطاقة بين تكوينات الاستخدام المستعمل وجاهزية التوصيل والتشغيل؛ تحقق عند الشراء إذا كنت تخطط لنشر أجهزة متعددة.

Standard Antminer setup. Step one: verify 220 to 240V electrical circuit with 20A capacity at the deployment location. Step two: connect the included P13-C20 power cord to the integrated PSU and plug into the 220V+ outlet. Step three: connect Ethernet cable to the router or network switch. Step four: find miner IP through Bitmain IP Reporter software, router DHCP assignment table, or network scanning tool. Step five: open the Antminer web interface in a browser, login with default root/root credentials (change immediately for security), configure SHA-256 pool URL and BTC wallet address. Step six: verify hashrate stabilizes at approximately 200 TH/s within 10 to 15 minutes of startup.

Every major SHA-256 mining pool supports the S21: Foundry USA, AntPool, F2Pool, ViaBTC, Braiins Pool, Luxor, OCEAN, SpiderPool, EMCD, and all other SHA-256 compatible pools. Standard Stratum protocol with no hardware restrictions on pool selection. Pool fees typically range from 0 to 3 percent of revenue depending on pool business model. NiceHash supports the S21 for hashrate rental marketplace sellers who prefer rental income over direct mining rewards. Verify pool specifics before deployment including minimum payout thresholds, hashrate reporting accuracy, and any minimum hashrate requirements.

365-day Bitmain factory warranty on brand new Plug and Play Ready units, among the longest warranties in the ASIC mining industry. Most competing manufacturers offer 180 days. Warranty covers manufacturing defects and hardware failures under normal operating conditions. Tampering with the warranty seal, use of incompatible PSU, exceeding rated voltage input, or physical damage from shipping voids coverage. Used configuration warranty terms vary depending on the unit's remaining factory warranty period and distributor policies; verify at purchase with MillionMiner. Warranty claims processed through MillionMiner support with direct Bitmain channel escalation as needed.

Standard air cooled Antminer maintenance. Quarterly dust cleaning of the four fan intakes and rear exhaust prevents thermal throttling and premature fan bearing wear. Annual fan bearing inspection with replacement if bearing noise develops. Monitor hashrate continuously through the Antminer web interface or BraiinsOS+ dashboard. Bitmain's S21 platform has two years of field reliability data as of April 2026 with no known systemic reliability issues. For Used unit operators, add initial inspection of chassis for signs of thermal stress, verify PSU capacitor health if possible, run 24-hour burn-in at rated load before production deployment, and test all four fans under load to confirm functional cooling.

Yes. MillionMiner hosting services accept S21 series hardware at managed facilities with 220V+ electrical infrastructure. At $0.07 per kWh hosted electricity: +$1.23 daily profit at current Bitcoin pricing. At $0.05 per kWh industrial hosting rates: approximately +$2.78 daily profit. Hosting eliminates facility CapEx, noise management, thermal infrastructure, and day-to-day operational overhead. For first time Bitcoin mining buyers without 220V circuits, dedicated deployment space, or 75 dB-tolerant mining location, hosting through MillionMiner is often the practical path to operational Bitcoin mining. Contact MillionMiner for current hosting rates, power tier options, and facility availability.

Yes, for buyers with 220V+ circuits and dedicated deployment space. The S21 base is the lowest CapEx current generation Bitcoin miner available at MillionMiner, with Bitmain's mature firmware ecosystem, extensive community support, and proven two-year field reliability. At Used pricing $1,402.23, it is the cheapest entry to current generation Bitcoin mining in the MillionMiner inventory. For first time buyers without 220V circuits or dedicated mining space, consider MillionMiner hosting instead of home deployment. For buyers wanting better efficiency who can accept higher CapEx, the S21 PRO at $3,083 produces 60 percent more daily profit. For minimum-CapEx experimentation with real Bitcoin mining before committing to a 200 TH/s industrial ASIC, the Bitaxe Touch ($199, 1.6 TH/s) is a lower-risk starting point.

The S21 base is the lowest CapEx route to S21 generation Bitcoin mining. Buy it if you want the cheapest per terahash entry to current generation hardware, you have access to 220V+ commercial circuits and dedicated mining space, you are building a fleet where per unit CapEx matters more than per unit efficiency, you prefer Bitmain's mature firmware ecosystem and BraiinsOS+ compatibility, or you are opportunistically scaling with uncertain electricity contract terms. Consider the S21 PRO at $3,083 if you want 17 percent better efficiency and more daily profit at higher CapEx. Consider the S21 XP at $4,051 if you want maximum hashrate and efficiency. Consider the Bitdeer SealMiner A3 Pro Air at $4,490 (290 TH/s, 12.5 J/TH) if you want the best air cooled efficiency available in the MillionMiner inventory.

مسارات ترقية عائلة S21: S21 PRO بسرعة 234 تيرا هاش وتيار 15 جول/تيرا للسعر 3,083 دولار، S21+ بسرعة 235 تيرا هاش، S21 XP بسرعة 270 تيرا هاش وتيار 13.5 جول/تيرا للسعر 4,051 دولار، S21+ Hyd بتردد 319 تيرا هاش مبرد بالمائع مقابل 3,137 دولار، وS21 XP Hydro بسرعة 473 تيرا هاش مقابل 6,899 دولار. الخطوة الجيل التالي: بيتماين S23 بسرعة 318 تيرا هاش وتيار 11 جول/تيرا مقابل 8,103 دولارات. الشركات المصنعة المنافسة بكفاءة مماثلة أو أفضل: بيتديير SealMiner A3 Pro Air بسرعة 290 تيرا هاش وتيار 12.5 جول/تيرا مقابل 4,490 دولار، ميكرو بي تي Whatsminer M79 مبرد مائياً بسرعة 920 تيرا هاش. لتنويع الأسطول عبر الخوارزميات: بيتماين KS7 بسرعة 45 تيرا هاش لعملة كاسبا مقابل 2,123 دولار، بيتماين L9 بسرعة 17 جيجاهاش لعملة سكرابت، بيتماين D9 بسرعة 1.77 تيرا هاش لعملة داش. للدخول الأدنى من حيث رأس المال الثابت للتعدين الحقيقي للعملة الرقمية كتجربة أولية: بيتاكس Touch بسرعة 1.6 تيرا هاش مقابل 199 دولار.