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Bitmain Antminer S21j XP Hyd

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BitmainSHA-256BTC

Antminer S21j XP Hyd (495T)

495 TH/s5,940 WHydro-cooled
Profit / day
$3.44/day
after power at $0.08/kWh
Efficiency
12.00J/TH

Availability

Priced 1 Oct 2026
Brand new, 12-month warrantyEverything includedNo setup fees
1
0 units

Profitability · SHA-256 · BTC

Is the Antminer S21j XP Hyd profitable?

Yes. The Bitmain Antminer S21j XP Hyd (495T) mines Bitcoin on the SHA-256 algorithm at 495 TH/s, drawing 5,940 W (12.0 J/TH). At $0.08 per kWh it earns about $14.78 a day, spends $11.40 of that on power, and keeps $3.38. That’s around $101 a month, or $1,232 a year.

It’s #12 of 269 SHA-256 miners on efficiency. It’s a hydro (water-cooled) unit, released in March 2026.

Break-even power price
$0.104/kWh

It makes money below this.

Pays for itself in
~5.5years

At $6,723, if today’s numbers held, so treat this as a rough guide.

Daily profit rank
#32of 533

Across every miner we track.

Antminer S21j XP Hyd specifications

ManufacturerBitmain
ModelAntminer S21j XP Hyd
AlgorithmSHA-256
CoinsBTC
Hashrate495 TH/s
Power consumption5,940 W
Efficiency12.0 J/TH
CoolingHydro (water)
ReleasedMarch 2026

Other coins it can mine

Mine instead

BitcoinBTCRanked on
$14.780.000196 BTC
–
0.000057%
$31.0B
−2.0%
QuaiQUAI
$17.512,436 QUAI
+18%
0.64%
$91kLow liquidity
+14.7%
eCashXEC
$16.172,852,532 XEC
+9%
1.1%Noticeable
$1.6M
−6.2%
DigiByte (SHA-256)DGB
$16.175,315 DGB
+9%
1.9%Noticeable
$2.3M
−3.3%
Bitcoin SVBSV
$14.750.909 BSV
<1%
0.20%
$6.6M
−2.4%
Bitcoin CashBCH
$14.570.0609 BCH
−1%
0.01%
$175.1M
−13.7%

Paid on top

Fractal BitcoinFB
+<$0.010.00255 FB
+<1%
0.000059%
$2.4M
−16.8%Volatile
NamecoinNMC
+<$0.010.000212 NMC
+<1%
0.000059%
$0Illiquid
+0.4%
ElastosELA
+<$0.010.000212 ELA
+<1%
0.000059%
$307k
−43.0%Highly volatile
HathorHTR
+<$0.010.0191 HTR
+<1%
0.000059%
$71kLow liquidity
−17.7%Volatile
Max potential profitUnlikely
+$3.38/day
$3.38 BTC profit + <$0.01 paid on top

How it compares · SHA-256 miners

MinerRankEfficiencyProfit / day
Bitmain Antminer S23 Hyd 3U (1.16 PH)#19.5 J/TH$13.48
Bitdeer SealMiner A4 Ultra Hydro#29.4 J/TH$10.38
Bitmain Antminer S23e Hyd U2H (865T)Newer model#310.0 J/TH$9.22
Bitmain Antminer S23e Hyd 2U (865Th)#410.0 J/TH$9.22
Bitmain Antminer S21j XP Hyd (495T)This miner#1312.0 J/TH$3.38
Bitmain Antminer S21 XP Hyd (473T)#1412.0 J/TH$3.23
Bitmain Antminer S23 Immersion (442Th)Earlier model#1512.0 J/TH$3.01
Bitaxe Gamma 602#5511.5 J/TH$0.01

More from Bitmain

MinerProfit / day
Bitmain Antminer Z15 Pro (860K)Equihash$125.48
Bitmain Antminer Z15 Pro (840K)Equihash$122.43
Bitmain Antminer Z15K (565kh)Equihash$81.17
Bitmain Antminer Z15KEquihash$75.09
Bitmain Antminer Z15Equihash$60.99
All Bitmain minersBest SHA-256 minersFull rankingsHow we calculate profit

Figures updated 00:01 UTC, 10 November 2026, using today’s network difficulty and coin prices. Estimates, not financial advice.