ASIC miner comparison

X4-1U (520MH/s) vs L21 (550MH/s)

Compare pricing, hashrate, power draw, efficiency, ROI, and estimated hosted profitability before choosing your next mining setup.

X4-1U (520MH/s)
VS
L21 (550MH/s)
Higher hashrate
L
Better efficiency
X4-1U
Estimated net daily
X4-1U
Hosted power rate
$0.060/kWh

Option 1

X4-1U (520MH/s)

Ask availability
X4-1U (520MH/s)
Price
N/A
ROI
N/A
Hashrate
520 MH/s
Net daily
-$0.07
Open product page

Option 2

L21 (550MH/s)

Ask availability
L21 (550MH/s)
Price
N/A
ROI
N/A
Hashrate
550 MH/s
Net daily
-$1.16
Open product page

X4-1U (520MH/s) leads this comparison

X4-1U (520MH/s) comes out ahead on more buyer-facing signals here. L21 (550MH/s) can still be the better fit when budget, availability, or a specific mining setup matters more.

X4-1U
5
metric wins
L
1
metric wins

Profit estimates use currently available product data and a hosted electricity rate of $0.060/kWh.

Technical comparison

Side-by-side mining, operating, and commercial specs.

FeatureX4-1U (520MH/s)L21 (550MH/s)Advantage
Brand
Jasminer
BW
Contextual
Model
X4-1U
L
Contextual
Hashrate
520 MH/s
550 MH/s
Best
L21 (550MH/s)
Power Consumption
240W
Best
950W
X4-1U (520MH/s)
Efficiency
0.46 J/MH
Best
1.73 J/MH
X4-1U (520MH/s)
Daily energy use
5.8 kWh
Best
22.8 kWh
X4-1U (520MH/s)
Net Daily Profit (Est.)
-$0.07
Best
-$1.16
X4-1U (520MH/s)
Monthly Profit (Est.)
-$1.97
Best
-$34.74
X4-1U (520MH/s)
Price
N/A
N/A
Contextual
Estimated ROI
N/A
N/A
Contextual
Cooling
AIR
AIR
Contextual
Dimensions
450 x 462 x 44 mm
130 x 350 x 155 mm
Contextual
Weight
N/A
5750 g
Contextual

Performance

L21 (550MH/s) has the hashrate edge for raw output potential.

Efficiency

X4-1U (520MH/s) is stronger when comparing joules per hash unit.

Buying decision

Check live stock, delivery schedule, and hosting capacity on the product page before placing an order.

Frequently asked questions

Which is more powerful: X4-1U (520MH/s) or L21 (550MH/s)?

L21 (550MH/s) has a higher hashrate of 550 MH/s compared to X4-1U (520MH/s)'s 520 MH/s.

Is X4-1U (520MH/s) more efficient than L21 (550MH/s)?

Yes, X4-1U (520MH/s) is more energy efficient at 0.46 J/MH.

Which miner has the better estimated ROI?

Estimated ROI is not available because one of the miners is missing current pricing or profit data.

Every Day You Wait is Revenue You Lose

Curious? Let’s connect to answer your questions.