Gokin GK-3-54HGF-490M vs Gokin GK-3-54HGb-490M
VS
The verdict
Identical on every published parameter
All 19 comparable parameters agree. Two records this alike are usually one panel sold under two names, or two bins of the same production line - decide on price and on who you would rather buy from.
How alike are they
19
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
0 of 19 parameters
What actually differs
Every comparable parameter agrees. The full specification is below.
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 (-0.260 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
54HGF-490M
16,568 kWh
54HGb-490M
16,568 kWh
Lifetime gap
No difference
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
54HGF-490M
54HGb-490M
Standard test conditions
25 °C
100.0% of rated power
490 W
490 W
Cool, bright day
40 °C
96.1% of rated power
471 W
471 W
Typical summer roof
55 °C
92.2% of rated power
452 W
452 W
Hot roof
70 °C
88.3% of rated power
433 W
433 W
03
Full specification
Parameter
54HGF-490M
54HGb-490M
Difference
Power and efficiency
Rated power
490 Wp
490 Wp
Same
Module efficiency
24.00 %
24.00 %
Same
Power density
240.1 Wp/m²
240.1 Wp/m²
Same
Open-circuit voltage
40.47 V
40.93 V
Effectively the same
Voltage at max power
33.99 V
33.88 V
Effectively the same
Short-circuit current
15.15 A
15.14 A
Effectively the same
Current at max power
14.42 A
14.47 A
Effectively the same
Temperature
Temperature coefficient
-0.260 %/°C
-0.260 %/°C
Same
Mechanical
Dimensions
1800x1134x30 mm
1800x1134x30 mm
Same
Module area
2.041 m²
2.041 m²
Same
Weight
21.4 kg
21.4 kg
Same
Weight per kWp
43.7 kg/kWp
43.7 kg/kWp
Same
Warranty and degradation
Product warranty
15 yrs
15 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.35 %/yr
0.35 %/yr
Same
Technology
Cell technology
Back Contact
Back Contact
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
108
108
Same
Bifacial
No
No
Same
04
14,129 panels
Against the whole database
Efficiency
#329
vs
#329
Tied - the same position in the database
Power density
#339
vs
#339
Tied - the same position in the database
Heat behaviour
#515
vs
#515
Tied - the same position in the database
Weight
#323
vs
#323
Tied - the same position in the database
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#5,072
vs
#5,072
Tied - the same position in the database
05
Open the full database
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06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Gokin GK-3-54HGF-490M or Gokin GK-3-54HGb-490M?
According to our database: both panels are closely matched on key specs - the decision often comes down to price and local availability. See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Gokin GK-3-54HGF-490M and Gokin GK-3-54HGb-490M?
Gokin GK-3-54HGF-490M has a module efficiency of 24.00%, while Gokin GK-3-54HGb-490M is 24.00%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Gokin GK-3-54HGF-490M use vs Gokin GK-3-54HGb-490M?
Gokin GK-3-54HGF-490M uses Back Contact cells; Gokin GK-3-54HGb-490M uses Back Contact. 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 Gokin GK-3-54HGF-490M and Gokin GK-3-54HGb-490M?
Gokin GK-3-54HGF-490M has a 30 years power warranty; Gokin GK-3-54HGb-490M has a 30 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.
Shop prices: See 6 Gokin 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.