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Bitmain

Bitmain Antminer S21 PRO (234Th)

Model: Antminer S21 PRO

Nový

Bitmain's efficiency optimized variant of the S21 platform. 234 TH/s SHA-256 at 3,510W and 15 J/TH on 5nm chip architecture. The "PRO" designation reflects premium chip binning: the S21 Pro delivers 17 percent more hashrate than the standard S21 (200 TH/s) at proportionally less power increase, resulting in better per terahash efficiency. Positioned between the S21+ (235 TH/s at 16.5 J/TH, nearly identical hashrate but 10 percent worse efficiency) and the S21 XP (270 TH/s at 13.5 J/TH, more hashrate and better efficiency at higher price). In stock at MillionMiner at $3,083 with positive daily margins at $0.08 per kWh. 220 to 277V. Four fans at 75 dB. 365 day Bitmain warranty. Ships with PSU and free DDP worldwide.

234 TH/s 3550W SHA-256 15.17 J/TH

Vyberte dostupnost

Množství

Celková cena

$3,083.00

Buying 10 or more? Get custom bulk pricing

Pay with: Bankovní převod | BTC | ETH | USDT

Opravdový

Otestovaný hardware

Celosvětově

Celosvětová doprava

Podpora

Odborníci na těžbu

Těžební výkon

234 TH/s

Výkon

3550 W

Účinnost

15.17 J/TH

Hluk

75 dB

Odhadované výnosy z těžby

Na základě aktuální ceny BTC a obtížnosti sítě. Pouze orientační.

Období Denně Týdenní Měsíční
Příjmy
$8.84 $61.88 $265.20
Elektrická energie
-$6.82 -$47.74 -$204.60
Zisk
$2.02 $14.14 $60.60

Using 0.080 $/kWh · Network difficulty as of today. Estimates only.

Adjust rate in the bar above

Updated daily. Last refresh: May 09, 2026. Estimates at $0.08/kWh.

Kompletní specifikace

Těžební výkon 234 TH/s
Spotřeba energie 3550 W
Účinnost 15.17 J/TH
Algoritmus SHA-256
Model Antminer S21 PRO
Rok vydání Moře 2024
Hladina hluku 75 dB
Rozměry 400 x 195 x 290mm
Váha 20 kg
Napětí 100-240V
Rozhraní Ethernet
Provozní teplota 5 - 45 °C
vlhkost 5 - 95 %
Typ chlazení Air

Co je v krabici

Antminer S21 PRO
Zdroj napájení (PSU)
Napájecí kabely
Rychlý průvodce začátkem

Obsah se může lišit podle šarže. Přesné položky jsou uvedeny v potvrzení objednávky.

Rychlá instalace

1

Connect PSU to miner and plug into the outlet

2

Připojte ethernetový kabel k vašemu routeru nebo switchi

3

Najděte IP těžaře prostřednictvím administrace routeru nebo nástroje pro skenování IP

4

Otevřete webové rozhraní, zadejte URL bazénu a peněženku — začněte těžit

Detaily produktu

Bitmain Antminer S21 PRO 234 TH/s SHA-256 Bitcoin Miner: Premium Chip Binning for 15 J/TH Efficiency at $3,083

The Bitmain Antminer S21 PRO produces 234 TH/s of SHA-256 hashrate at 3,510W and 15 J/TH efficiency on Bitmain's 5nm chip architecture. ±3 percent hashrate and ±5 percent power tolerance. Four cooling fans at 75 to 76 dB. 220 to 277V single phase AC input. Ethernet 10/100M connectivity. 450 x 219 x 293 mm at approximately 18.5 kg. 365 day Bitmain manufacturer warranty. In stock at MillionMiner at $3,083. Chip binning explained. All S21 family miners (S21, S21+, S21 PRO, S21 XP) use the same 5nm chip architecture. Manufacturing produces chips with varying quality levels. Chips that achieve higher frequency at lower voltage are "premium bins" reserved for higher tier models. The PRO uses chips that produce 234 TH/s at 3,510W (15 J/TH), which is the same total hashrate tier as the S21+ (235 TH/s at 3,876W, 16.5 J/TH) but achieved at 10 percent better efficiency. The PRO chips run the same hashrate at lower voltage, consuming less power for identical output. This is not a different chip design; it is a better selection from the same production line. S21 family complete hierarchy with economics at $0.08 per kWh. Standard S21 at 200 TH/s, approximately 17.5 J/TH, approximately $1.00 daily profit (entry). S21+ at 235 TH/s, 16.5 J/TH, approximately $1.17 daily profit (mid hashrate). S21 PRO at 234 TH/s, 15 J/TH, approximately $1.87 daily profit (this product, efficiency optimized). S21 XP at 270 TH/s, 13.5 J/TH, approximately $3.81 daily profit (top tier, $4,051). The PRO produces 60 percent more daily profit than the S21+ at the same price ($3,083 for both) because the 10 percent efficiency improvement translates directly into lower electricity cost for the same Bitcoin production. Fleet economics comparison. Ten S21 PRO units: 2,340 TH/s at 35,100W total, $18.70 daily profit. Ten S21+ units: 2,350 TH/s at 38,760W total, $11.70 daily profit. Same hashrate. $7.00 daily more profit from the PRO fleet. $2,555 more profit annually. The power savings alone justify choosing the PRO over the S21+ when both are available at similar pricing. Ten S21 XP units: 2,700 TH/s at 36,450W total, $38.10 daily profit. The XP fleet produces more but costs $9,680 more in acquisition (10 x $968 premium per unit). The XP fleet recovers that premium in approximately 495 days through higher daily profit. Bitmain manufacturer context. Bitmain Technologies is the world's largest ASIC mining hardware manufacturer by market share. Founded in 2013 in Beijing. The Antminer series has been the industry standard since the S7 era. Bitmain's firmware ecosystem is the most developed in the industry: stock firmware, BraiinsOS+ (third party autotuning), Vnish firmware, and other community tools support Antminer hardware. The S21 PRO uses Bitmain's mature firmware with pool management, hashrate monitoring, temperature alerting, and fan control. The 365 day warranty is among the longest in the ASIC mining industry (most manufacturers offer 180 days). Current economics. MillionMiner calculator at $0.08 per kWh: $8.69 daily revenue, $6.82 daily electricity, +$1.87 daily profit. Monthly: +$56.10. At $3,083 acquisition: payback approximately 55 days at current conditions. At $0.07 per kWh: electricity $5.90, profit +$2.79 daily, payback approximately 37 days. At $0.05 per kWh: electricity $4.21, profit +$4.48 daily, payback approximately 23 days. Profitable at any electricity rate below approximately $0.10 per kWh at April 2026 conditions. Physical and infrastructure specifications. 450 x 219 x 293 mm at approximately 18.5 kg per Mining Now and ASIC Marketplace (MM lists 400 x 195 x 290 mm and 20 kg, verify actual dimensions). Four fans at 75 to 76 dB. Standard industrial ASIC noise. 220 to 277V single phase (ASIC Marketplace and CryptoMinerBros confirm 220-277V; MM lists 100-240V which is unlikely at 3,510W). C19 power connector with 20A cable. Ethernet 10/100M. BraiinsOS+ compatible for autotuning and efficiency optimization. Ships with built in PSU, power cables, quick start guide, 365 day Bitmain warranty, and free DDP worldwide delivery from MillionMiner.

Bitmain Antminer S21 PRO 234 TH/s: The Efficiency Sweet Spot in the S21

The Bitmain Antminer S21 PRO produces 234 TH/s of SHA-256
hashrate at 3,510W and 15 J/TH efficiency. Released mid 2024 as Bitmain's premium binned
S21 variant. In stock at MillionMiner at $3,083.
The S21 family positioning explains why the PRO exists. Standard S21 at 200 TH/s and
approximately 17.5 J/TH (base model, lowest price). S21+ at 235 TH/s and 16.5 J/TH (higher
hashrate, mid efficiency). S21 PRO at 234 TH/s and 15 J/TH (this product, virtually identical
hashrate to the S21+ at 10 percent better efficiency). S21 XP at 270 TH/s and 13.5 J/TH (top
hashrate and efficiency, highest price at $4,051).
The PRO versus S21+ comparison is the most relevant decision for buyers at this tier. Both
produce effectively the same hashrate (234 versus 235 TH/s, a 0.4 percent difference that is
within tolerance). The PRO draws 3,510W versus the S21+ at 3,876W: 366W less power for the
same output. At $0.08 per kWh, the PRO saves $0.70 daily in electricity versus the S21+ ($6.74
versus $7.44). Over one year that is $256 in electricity savings per unit. Over a 10 unit fleet:
$2,560 annual savings. The PRO is the S21+ with the fat trimmed.
The PRO versus S21 XP trade off is price versus efficiency. The S21 XP costs $4,051 ($968
more than the PRO at $3,083) but delivers 36 TH/s more hashrate at 10 percent better J/TH.
The S21 XP produces approximately $2.44 more daily profit than the PRO at $0.08 per kWh.
The $968 price premium pays for itself in approximately 397 days through higher daily profit. For
operators with shorter deployment horizons, the PRO at lower CapEx may produce better total
return. For longer deployments, the XP's efficiency advantage compounds.
At $3,083 the PRO is the most affordable currently profitable Bitcoin miner in MillionMiner's in
stock inventory that delivers 200+ TH/s with sub-16 J/TH efficiency. The S21+ at $3,083 costs
the same at 1 TH/s more hashrate but 10 percent worse efficiency.
220 to 277V. Four fans at 75 dB. 450 x 219 x 293 mm at approximately 18.5 kg. Ethernet. 365
day Bitmain warranty.

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Bitmain Antminer S21 PRO 234 TH/s SHA-256 Bitcoin Miner

Bitmain's premium binned S21 variant. 234 TH/s SHA-256 at 3,510W and
15 J/TH. 17 percent more hashrate than the standard S21 at better efficiency. Between the
S21+ (235 TH/s, 16.5 J/TH, similar hashrate at worse efficiency) and S21 XP (270 TH/s, 13.5
J/TH, more hashrate at better efficiency and higher price). In stock at $3,083. +$1.87 daily at
$0.08 per kWh. 220 to 277V. 75 dB. 365 day Bitmain warranty. Ships with PSU and free DDP
worldwide.

15 J/TH: S21+ Hashrate at 10% Less Power

Same 234 TH/s as the S21+ at 366W less draw. Saves $256 per unit annually at $0.08/kWh. Premium chip binning, not a different design.

$3,083 In Stock, ~55 Day Payback

Most affordable 200+ TH/s sub-16 J/TH Bitcoin miner in stock. +$1.87 daily at $0.08/kWh. Bitmain 365 day warranty. Free DDP worldwide.

BraiinsOS+ Compatible

Bitmain's mature firmware ecosystem supports third party autotuning. Optimize efficiency further with BraiinsOS+ or Vnish firmware.

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Nejčastější otázky

234 TH/s SHA-256 at 3,510W and 15 J/TH. ±3 percent hashrate and ±5 percent power tolerance. The "PRO" designation means premium chip binning from Bitmain's 5nm production: same chip architecture as the S21 and S21+, but chips selected for higher efficiency. The PRO achieves 234 TH/s at 15 J/TH versus the S21+ at 235 TH/s and 16.5 J/TH, virtually identical hashrate at 10 percent better efficiency.

S21 PRO at 234 TH/s, 3,510W, 15 J/TH, $3,083. S21+ at 235 TH/s, 3,876W, 16.5 J/TH, $3,083. Same price and effectively same hashrate. The PRO draws 366W less power for the same output. At $0.08 per kWh: PRO saves $0.70 daily electricity, producing $1.87 daily profit versus the S21+ at approximately $1.17. The PRO is the better buy at the same price. Over one year, the PRO saves $256 per unit in electricity compared to the S21+.

S21 XP at 270 TH/s, 3,645W, 13.5 J/TH, $4,051. S21 PRO at 234 TH/s, 3,510W, 15 J/TH, $3,083. The XP costs $968 more but delivers 36 TH/s more hashrate at 10 percent better efficiency. The XP produces approximately $3.81 daily profit versus the PRO at $1.87. The XP's $968 premium pays for itself in approximately 500 days. For shorter deployment horizons, the PRO at lower CapEx may deliver better total return. For deployments exceeding 18 months, the XP's efficiency advantage compounds.

A3 Pro Air at 290 TH/s, 3,625W, 12.5 J/TH, $4,490. S21 PRO at 234 TH/s, 3,510W, 15 J/TH, $3,083. The A3 Pro Air delivers 24 percent more hashrate at 17 percent better efficiency for $1,407 more. The A3 Pro Air produces approximately $3.81 daily profit versus the PRO at $1.87. The A3 Pro Air's premium pays back in approximately 726 days. The PRO wins on CapEx at $13.17 per TH versus $15.48 per TH for the A3 Pro Air.

Většina zdrojů distributorů potvrzuje rozsah 220 až 277V. MM uvádí 100 až 240V, ale při 3 510W na 110V by zařízení odebíralo přibližně 31,9 ampérů, což přesahuje kapacitu běžného rezidenčního okruhu. Praktické nasazení vyžaduje okruhy s napětím nad 220V. Při 220V odebírá přibližně 16 ampérů. Při 277V odebírá přibližně 12,7 ampérů. Před plánováním nasazení na 110V ověřte skutečný rozsah napětí s MillionMiner.

Yes. MillionMiner calculator at $0.08 per kWh: +$1.87 daily ($8.69 revenue minus $6.82 electricity). Monthly: +$56.10. At $3,083 acquisition: payback approximately 55 days. At $0.07 per kWh: +$2.79 daily, payback approximately 37 days. Profitable at any electricity rate below approximately $0.10 per kWh at April 2026 conditions. Not the most profitable miner available, but profitable at a lower CapEx entry than the S21 XP or A3 Pro Air.

Yes. BraiinsOS+ supports S21 series hardware. BraiinsOS+ provides autotuning (automatically optimizes chip voltage and frequency for best efficiency at your target power), per chip performance data, and pool management. Operators using BraiinsOS+ on S21 hardware typically achieve 2 to 5 percent efficiency improvements over stock firmware, pushing the PRO from 15 J/TH toward 14.3 to 14.7 J/TH range. Vnish firmware is another third party option. The Antminer firmware ecosystem is the most developed in the industry.

75 až 76 dB od čtyř chladicích ventilátorů. Standardní hlučnost průmyslových ASIC. Stejné jako u S21 XP, S23 a většiny současných generací těžařů Bitcoinu. Vyžaduje vyhrazený prostor pro těžbu: sklad, kontejner, garáž s akustickou izolací nebo profesionální hosting. Není vhodné pro sdílené obytné nebo kancelářské prostředí.

ASIC Marketplace and CryptoMinerBros list 450 x 219 x 293 mm. MM lists 400 x 195 x 290 mm. Mining Now lists 18.5 kg. MM lists 20 kg. MM body copy mentions 13.8 kg (contradicts the 20 kg spec). Multiple dimensions and weights in circulation — verify with MillionMiner which specific chassis version ships.

ASIC Marketplace and CryptoMinerBros list -20 to 45 degrees Celsius. MM lists 5 to 45 degrees Celsius. One Miners lists 0 to 40 degrees Celsius. If -20 to 45 is accurate (matching the Bitdeer A3 Pro Air), the S21 PRO supports cold climate container deployment without intake heating. Verify with Bitmain documentation.

All SHA-256 proof of work cryptocurrencies. Bitcoin (BTC) primary. Bitcoin Cash (BCH), Bitcoin SV (BSV), eCash (XEC), and other SHA-256 chains. AuxPoW merged mining through compatible pools. QUAI (SHA-256 chain) is noted by Kryptex as potentially the most profitable SHA-256 coin at certain conditions.

Yes. The S21 PRO ships with a built in PSU. C19 power connector with 20A cable. Connect directly to 220 to 277V outlet. No external PSU to source.

Standard Antminer setup. Connect power cable to 220V+ outlet. Connect Ethernet cable to router or switch. Find miner IP through Bitmain IP reporter, router DHCP, or network scanning. Open Antminer web interface, configure SHA-256 pool URL and BTC wallet address. Verify hashrate stabilizes at approximately 234 TH/s within 10 to 15 minutes.

Every major SHA-256 pool: Foundry USA, AntPool, F2Pool, ViaBTC, Braiins Pool, Luxor, OCEAN, and all SHA-256 compatible pools. Standard Stratum protocol. No restrictions.

365 day Bitmain manufacturer warranty per ASIC Marketplace and CryptoMinerBros. This is among the longest warranties in the ASIC industry. Covers manufacturing defects and hardware failures under normal operating conditions. BT-Miners lists 6 months which may reflect distributor specific terms rather than manufacturer warranty. Verify warranty duration through MillionMiner as the selling distributor.

Standard air cooled Antminer maintenance. Quarterly dust cleaning of four fan intake and exhaust. Annual fan bearing inspection. Monitor hashrate through Antminer web interface or BraiinsOS+ dashboard. Bitmain's S21 platform is well established with years of field reliability data across the S21 family.

Ano. Hostingové zařízení MillionMiner přijímají hardware série S21. Při ceně 0,07 USD za kWh se denní náklady na elektřinu sníží na 5,90 USD, zisk vzroste na +2,79 USD denně. Při ceně 0,05 USD za kWh (některé zařízení): +4,48 USD denně, návratnost do méně než 25 dní. Hosting odstraní správu zařízení, hluku a infrastruktury pro provozovatele.

For first time miners with access to 220V+ circuits and dedicated mining space, the S21 PRO is an excellent entry at $3,083. Lowest CapEx among currently profitable 200+ TH/s miners in stock. Bitmain's Antminer firmware is the most documented in the industry with extensive community guides. The 365 day warranty provides new buyer protection. For first timers without dedicated space or 220V circuits, professional hosting through MillionMiner eliminates infrastructure complexity.

The S21 PRO is the best value in MillionMiner's in stock Bitcoin mining lineup for buyers who prioritize low CapEx over maximum efficiency. At $3,083 with +$1.87 daily profit and approximately 55 day payback at $0.08 per kWh, the economics are solid. Buy the PRO if: you want the most affordable currently profitable Bitcoin miner with sub-16 J/TH efficiency, you value Bitmain's firmware ecosystem and BraiinsOS+ compatibility, or you are building a fleet where per unit CapEx matters more than per unit efficiency. Consider the S21 XP ($4,051) if you want 10 percent better efficiency and 15 percent more hashrate at higher CapEx. Consider the Bitdeer A3 Pro Air ($4,490) if you want 12.5 J/TH efficiency with cold climate deployment capability.

Within S21 family upgrades: S21 XP (270 TH/s, 13.5 J/TH, $4,051), S21 XP Hydro (473 TH/s, liquid cooled, $6,899), S21+ Hyd (319 TH/s, liquid cooled, $3,137). Next generation: Bitmain S23 (318 TH/s, 11 J/TH, $8,103). Competing manufacturers: Bitdeer A3 Pro Air (290 TH/s, 12.5 J/TH, $4,490). For fleet diversification: Bitmain KS7 (45 TH/s Kaspa, $2,123), Bitmain L9 (17 GH/s Scrypt, $3,990).

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