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420 vs 455 12 of 19 identical Swap Change panels

Sun Earth DXM8-54HBG-420 vs Sun Earth DXM8-54HBG-455

Sun Earth
DXM8-54HBG-420
420 Wp 21.50 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Sun Earth
DXM8-54HBG-455
455 Wp 23.30 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

455 leads on the differences that matter

The largest is module efficiency: 1.80 pp more efficient. 12 of 19 comparable parameters are identical.

See all 7 differences
How alike are they
12 of 19 comparable
parameters are identical
identical differs
01

What actually differs

7 of 19 parameters
Parameter 420 455 Difference
Module efficiency 21.50 % 23.30 % 1.80 pp more efficient
Power density 215.1 Wp/m² 233.0 Wp/m² 17.9 Wp/m² higher
Rated power 420 Wp 455 Wp 35 W more power
Weight per kWp 58.3 kg/kWp 53.8 kg/kWp 4.5 kg/kWp lighter
Open-circuit voltage 37.90 V 39.30 V 1.40 V apart
Short-circuit current 14.10 A 14.70 A 0.60 A apart
Current at max power 13.29 A 14.09 A 0.80 A apart
02

What it means on a roof

Thirty years of production
Each panel's own declared degradation curve, at 1,200 kWh/kWp a year
Same temp coeff. for both panels (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
420
14,092 kWh
455
15,266 kWh
Lifetime gap
1,174 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 420 455
Standard test conditions 25 °C 100.0% of rated power 420 W 455 W
Cool, bright day 40 °C 95.7% of rated power 402 W 435 W
Typical summer roof 55 °C 91.3% of rated power 383 W 415 W
Hot roof 70 °C 87.0% of rated power 365 W 396 W
03

Full specification

Parameter 420 455 Difference
Power and efficiency
Rated power 420 Wp 455 Wp +35 W for 455
Module efficiency 21.50 % 23.30 % +1.80 pp for 455
Power density 215.1 Wp/m² 233.0 Wp/m² +17.9 Wp/m² for 455
Open-circuit voltage 37.90 V 39.30 V 1.40 V apart
Voltage at max power 31.60 V 32.30 V Effectively the same
Short-circuit current 14.10 A 14.70 A 0.60 A apart
Current at max power 13.29 A 14.09 A 0.80 A apart
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 1722x1134x30 mm 1722x1134x30 mm Same
Module area 1.953 m² 1.953 m² Same
Weight 24.5 kg 24.5 kg Same
Weight per kWp 58.3 kg/kWp 53.8 kg/kWp -4.5 kg/kWp for 455
Warranty and degradation
Product warranty 40 yrs 40 yrs Same
Performance warranty 40 yrs 40 yrs Same
Annual degradation 0.40 %/yr 0.40 %/yr Same
Technology
Cell technology TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 108 108 Same
Bifacial Yes Yes Same
04

Against the whole database

14,129 panels
Efficiency
#8,022 vs #1,057
455 leads by 6,965 places
Power density
#7,946 vs #1,139
455 leads by 6,807 places
Heat behaviour
#2,220 vs #2,220
Tied - the same position in the database
Weight
#11,757 vs #7,974
455 leads by 3,783 places
Warranty
#1 vs #1
Tied - the same position in the database
Overall
#3,345 vs #1,119
455 leads by 2,226 places
05

More useful comparisons

Open the full database
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Sun Earth DXM8-54HBG-420 vs Sun Earth DXM8-54HBG-450
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Sun Earth DXM8-54HBG-420 vs Sun Earth DXM8-54HBG-435
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3 differences, the largest is module efficiency
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Sun Earth DXM8-54HBG-420 vs Sun Earth DXM8-72HBG 610W
14 differences, the largest is module efficiency
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Sun Earth DXM8-54HBG-420 vs Sun Earth DXM8-72H-610
14 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Sun Earth DXM8-54HBG-420 or Sun Earth DXM8-54HBG-455?
According to our database: Sun Earth DXM8-54HBG-455 has higher module efficiency (23.30% vs 21.50%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Sun Earth DXM8-54HBG-420 and Sun Earth DXM8-54HBG-455?
Sun Earth DXM8-54HBG-420 has a module efficiency of 21.50%, while Sun Earth DXM8-54HBG-455 is 23.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Sun Earth DXM8-54HBG-420 use vs Sun Earth DXM8-54HBG-455?
Sun Earth DXM8-54HBG-420 uses TOPCon cells; Sun Earth DXM8-54HBG-455 uses TOPCon. Modern n-type technologies (TOPCon, HJT, BC) typically deliver higher efficiency and lower degradation compared to older PERC (p-type) cells.
What is the warranty on Sun Earth DXM8-54HBG-420 and Sun Earth DXM8-54HBG-455?
Sun Earth DXM8-54HBG-420 has a 40 years power warranty; Sun Earth DXM8-54HBG-455 has a 40 years power warranty. The power warranty guarantees a minimum percentage of rated output at the end of the warranty period (typically 80-87%). Product (materials) warranties are usually shorter.
Are Sun Earth DXM8-54HBG-420 and Sun Earth DXM8-54HBG-455 bifacial panels?
Both Sun Earth DXM8-54HBG-420 and Sun Earth DXM8-54HBG-455 are bifacial - they capture reflected light from the ground, which can add 5-15% more annual energy on ground-mount or elevated rooftop installations with a light surface beneath.

Shop prices: See 17 Sun Earth offers

Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate. The thirty-year projection and the temperature scenarios are calculations from those figures, and each states its assumption above.