ASIC miner comparison

KD-BOX 2 (5TH/s) vs L21 (550MH/s)

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

KD-BOX 2 (5TH/s)
VS
L21 (550MH/s)
Higher hashrate
KD
Better efficiency
L
Estimated net daily
KD
Hosted power rate
$0.060/kWh

Option 1

KD-BOX 2 (5TH/s)

Ask availability
KD-BOX 2 (5TH/s)
Price
N/A
ROI
N/A
Hashrate
5 TH/s
Net daily
-$0.48
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

KD-BOX 2 (5TH/s) leads this comparison

KD-BOX 2 (5TH/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.

KD
6
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.

FeatureKD-BOX 2 (5TH/s)L21 (550MH/s)Advantage
Brand
Goldshell
BW
Contextual
Model
KD
L
Contextual
Hashrate
5 TH/s
Best
550 MH/s
KD-BOX 2 (5TH/s)
Power Consumption
400W
Best
950W
KD-BOX 2 (5TH/s)
Efficiency
80.00 J/TH
1.73 J/MH
Best
L21 (550MH/s)
Daily energy use
9.6 kWh
Best
22.8 kWh
KD-BOX 2 (5TH/s)
Net Daily Profit (Est.)
-$0.48
Best
-$1.16
KD-BOX 2 (5TH/s)
Monthly Profit (Est.)
-$14.28
Best
-$34.74
KD-BOX 2 (5TH/s)
Price
N/A
N/A
Contextual
Estimated ROI
N/A
N/A
Contextual
Cooling
AIR
AIR
Contextual
Dimensions
178 x 84 x 150 mm
130 x 350 x 155 mm
Contextual
Weight
2000 g
Best
5750 g
KD-BOX 2 (5TH/s)

Performance

KD-BOX 2 (5TH/s) has the hashrate edge for raw output potential.

Efficiency

L21 (550MH/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: KD-BOX 2 (5TH/s) or L21 (550MH/s)?

KD-BOX 2 (5TH/s) has a higher hashrate of 5 TH/s compared to L21 (550MH/s)'s 550 MH/s.

Is KD-BOX 2 (5TH/s) more efficient than L21 (550MH/s)?

L21 (550MH/s) is more energy efficient at 1.73 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.