Solar Panel Comparison
JA Solar Deep Blue 4.0 N-Type Full Black 450W vs JA Solar DeepBlue 4.0 GB 430W N-Type TOPCon GFI Bifacial Dual Glass 25yr
The Deep Blue 4.0 N-Type Full Black 450W delivers 450W, 20W more than the DeepBlue 4.0 GB 430W N-Type TOPCon GFI Bifacial Dual Glass 25yr at 430W.
Deep Blue 4.0 N-Type Full Black 450W has a higher efficiency of 22% versus 21.6% for the DeepBlue 4.0 GB 430W N-Type TOPCon GFI Bifacial Dual Glass 25yr.
They use different cell technologies: Deep Blue 4.0 N-Type Full Black 450W uses N-type TOPCon MBB Half-Cell, while DeepBlue 4.0 GB 430W N-Type TOPCon GFI Bifacial Dual Glass 25yr uses N-type TOPCon GFI (Gapless) Bifacial Half-Cut.
Here's how they compare across all key specifications.
Spec
JA Solar
Deep Blue 4.0 N-Type Full Black 450W
450W
22% efficiency
JA Solar
DeepBlue 4.0 GB 430W N-Type TOPCon GFI Bifacial Dual Glass 25yr
430W
21.6% efficiency
Full Specification Comparison
| Spec | Deep Blue 4.0 N-Type Full Black 450W | DeepBlue 4.0 GB 430W N-Type TOPCon GFI Bifacial Dual Glass 25yr |
|---|---|---|
| Performance | ||
| Power Output | 450 W | 430 W |
| Efficiency | 22% | 21.6% |
| Cell Type | N-type TOPCon MBB Half-Cell | N-type TOPCon GFI (Gapless) Bifacial Half-Cut |
| Temp. Coeff. | -0.3 %/°C | -0.29 %/°C |
| Number of Cells | 108 | 108 |
| Bifacial | Yes | Yes |
| Electrical | ||
| Voc | 39.3 V | 39.68 V |
| Vmp | 32.82 V | 33.53 V |
| Isc | 14.48 A | 13.74 A |
| Imp | 13.71 A | 12.83 A |
| Max System Voltage | 1500 V | 1500 V |
| Operating Temp | -40 to +85 °C | -40 to +85 °C |
| Physical | ||
| Dimensions | 1762x1134x30 mm | 1722x1134x30 mm |
| Weight | 22 kg | 21 kg |
| Frame Colour | Black | Black |
| Connector Type | Staubli MC4-EVO2 | MC4-EVO2 |
| Junction Box IP | IP68 | IP68 |
| Warranty & Certification | ||
| Product Warranty | 25 years | 25 |
| Power Warranty | 30 years linear | 30 years linear (0.4%/yr) |
| MCS Certified | Yes | Yes |
| Certifications | IEC 61215, IEC 61730, ISO 9001, ISO 14001, ISO 45001 | IEC 61215, IEC 61730, UL 61215, UL 61730, ISO 9001, ISO 14001 |
| Pricing (UK) | ||
| Retail Price | £72.00 | — |
| Price per Watt | £0.160/W | — |
Frequently Asked Questions
Which is more efficient, the Deep Blue 4.0 N-Type Full Black 450W or the DeepBlue 4.0 GB 430W N-Type TOPCon GFI Bifacial Dual Glass 25yr?
The Deep Blue 4.0 N-Type Full Black 450W is more efficient at 22%, compared to 21.6% for the DeepBlue 4.0 GB 430W N-Type TOPCon GFI Bifacial Dual Glass 25yr. Higher efficiency means more power generated per square metre of roof space.
Which panel produces more power, the Deep Blue 4.0 N-Type Full Black 450W or the DeepBlue 4.0 GB 430W N-Type TOPCon GFI Bifacial Dual Glass 25yr?
The Deep Blue 4.0 N-Type Full Black 450W has a higher rated output at 450W. This means fewer panels would be needed to reach the same system size compared to the DeepBlue 4.0 GB 430W N-Type TOPCon GFI Bifacial Dual Glass 25yr.
Which solar panel should I choose for my home — the Deep Blue 4.0 N-Type Full Black 450W or the DeepBlue 4.0 GB 430W N-Type TOPCon GFI Bifacial Dual Glass 25yr?
The right choice depends on your priorities. If maximising energy generation per panel is key, consider efficiency and wattage. If budget is your main concern, compare price per watt. Both panels have their merits — use our Solar Estimator to see how each would perform in your specific home setup.
JA Solar
Deep Blue 4.0 N-Type Full Black 450W
450W · 22% efficiency · N-type TOPCon MBB Half-Cell
View full specs →JA Solar
DeepBlue 4.0 GB 430W N-Type TOPCon GFI Bifacial Dual Glass 25yr
430W · 21.6% efficiency · N-type TOPCon GFI (Gapless) Bifacial Half-Cut
View full specs →More Comparisons
See how these panels perform in your home
Use our Solar Estimator to calculate system size, installation cost, and payback period — with either of these panels as a starting point.