Silfab SIL-430 QD vs Silfab SIL-630 XL
VS
The verdict
630 XL leads on the differences that matter
The largest is rated power: 200 W more power. 8 of 19 comparable parameters are identical.
See all 11 differencesHow alike are they
8
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
11 of 19 parameters
What actually differs
Parameter
430 QD
630 XL
Difference
Rated power
430 Wp
630 Wp
200 W more power
Weight
21.0 kg
29.5 kg
8.5 kg lighter
Module efficiency
22.10 %
22.56 %
0.46 pp more efficient
Open-circuit voltage
38.91 V
57.49 V
18.58 V apart
Module area
1.950 m²
2.793 m²
0.843 m² apart
Power density
220.5 Wp/m²
225.6 Wp/m²
5.1 Wp/m² higher
Voltage at max power
33.25 V
48.47 V
15.22 V apart
Cell count
108
156
48 cells apart
Weight per kWp
48.8 kg/kWp
46.8 kg/kWp
2.0 kg/kWp lighter
Bifacial
No
Yes
No vs Yes
Dimensions
1721x1133x35 mm
2465x1133x35 mm
1721x1133x35 mm vs 2465x1133x35 mm
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.
430 QD
14,497 kWh
630 XL
21,240 kWh
Lifetime gap
6,743 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
430 QD
630 XL
Standard test conditions
25 °C
100.0% of rated power
430 W
630 W
Cool, bright day
40 °C
95.7% of rated power
411 W
603 W
Typical summer roof
55 °C
91.3% of rated power
393 W
575 W
Hot roof
70 °C
87.0% of rated power
374 W
548 W
03
Full specification
Parameter
430 QD
630 XL
Difference
Power and efficiency
Rated power
430 Wp
630 Wp
+200 W for 630 XL
Module efficiency
22.10 %
22.56 %
+0.46 pp for 630 XL
Power density
220.5 Wp/m²
225.6 Wp/m²
+5.1 Wp/m² for 630 XL
Open-circuit voltage
38.91 V
57.49 V
18.58 V apart
Voltage at max power
33.25 V
48.47 V
15.22 V apart
Short-circuit current
13.87 A
13.66 A
Effectively the same
Current at max power
12.93 A
13.00 A
Effectively the same
Temperature
Temperature coefficient
-0.290 %/°C
-0.290 %/°C
Same
Mechanical
Dimensions
1721x1133x35 mm
2465x1133x35 mm
1721x1133x35 mm vs 2465x1133x35 mm
Module area
1.950 m²
2.793 m²
0.843 m² apart
Weight
21.0 kg
29.5 kg
-8.5 kg for 430 QD
Weight per kWp
48.8 kg/kWp
46.8 kg/kWp
-2.0 kg/kWp for 630 XL
Warranty and degradation
Product warranty
25 yrs
25 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.30 %/yr
0.30 %/yr
Same
Technology
Cell technology
N-type
N-type
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
108
156
48 cells apart
Bifacial
No
Yes
No vs Yes
04
14,005 panels
Against the whole database
Efficiency
#6,012
vs
#3,899
630 XL leads by 2,113 places
Power density
#6,191
vs
#3,867
630 XL leads by 2,324 places
Heat behaviour
#2,165
vs
#2,165
Tied - the same position in the database
Weight
#2,492
vs
#1,365
630 XL leads by 1,127 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#7,342
vs
#1,032
630 XL leads by 6,310 places
05
Open the full database
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06
Written summary
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07
Questions about this pairing
Which panel is better: Silfab SIL-430 QD or Silfab SIL-630 XL?
According to our database: Silfab SIL-630 XL has higher module efficiency (22.56% vs 22.10%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Silfab SIL-430 QD and Silfab SIL-630 XL?
Silfab SIL-430 QD has a module efficiency of 22.10%, while Silfab SIL-630 XL is 22.56%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Silfab SIL-430 QD use vs Silfab SIL-630 XL?
Silfab SIL-430 QD uses N-type cells; Silfab SIL-630 XL uses N-type. 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 Silfab SIL-430 QD and Silfab SIL-630 XL?
Silfab SIL-430 QD has a 30 years power warranty; Silfab SIL-630 XL 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.
Are Silfab SIL-430 QD and Silfab SIL-630 XL bifacial panels?
Silfab SIL-630 XL is bifacial (captures light from both faces); Silfab SIL-430 QD is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.
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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.