Solar Panel Comparison
JA Solar Deep Blue 4.0 N-Type Full Black 450W vs REC Alpha Pure-RX 470W
The Alpha Pure-RX 470W delivers 470W, 20W more than the Deep Blue 4.0 N-Type Full Black 450W at 450W.
Alpha Pure-RX 470W has a higher efficiency of 22.6% versus 22% for the Deep Blue 4.0 N-Type Full Black 450W.
They use different cell technologies: Deep Blue 4.0 N-Type Full Black 450W uses N-type TOPCon MBB Half-Cell, while Alpha Pure-RX 470W uses N-type HJT (Heterojunction).
On price, the Deep Blue 4.0 N-Type Full Black 450W is cheaper by £79.95.
Here's how they compare across all key specifications.
Spec
JA Solar
Deep Blue 4.0 N-Type Full Black 450W
450W
22% efficiency
REC
Alpha Pure-RX 470W
470W
22.6% efficiency
Full Specification Comparison
| Spec | Deep Blue 4.0 N-Type Full Black 450W | Alpha Pure-RX 470W |
|---|---|---|
| Performance | ||
| Power Output | 450 W | 470 W |
| Efficiency | 22% | 22.6% |
| Cell Type | N-type TOPCon MBB Half-Cell | N-type HJT (Heterojunction) |
| Temp. Coeff. | -0.3 %/°C | -0.24 %/°C |
| Number of Cells | 108 | 88 |
| Bifacial | Yes | Yes |
| Electrical | ||
| Voc | 39.3 V | 47 V |
| Vmp | 32.82 V | 39.5 V |
| Isc | 14.48 A | 12.85 A |
| Imp | 13.71 A | 11.9 A |
| Max System Voltage | 1500 V | 1000 V |
| Operating Temp | -40 to +85 °C | -40 to +85 °C |
| Physical | ||
| Dimensions | 1762x1134x30 mm | 1728x1205x30 mm |
| Weight | 22 kg | 22.7 kg |
| Frame Colour | Black | Black |
| Connector Type | Staubli MC4-EVO2 | — |
| Junction Box IP | IP68 | — |
| Warranty & Certification | ||
| Product Warranty | 25 years | 20 years |
| Power Warranty | 30 years linear | 25 years (0.25%/yr degradation) |
| MCS Certified | Yes | No |
| Certifications | IEC 61215, IEC 61730, ISO 9001, ISO 14001, ISO 45001 | IEC 61215, IEC 61730 |
| Pricing (UK) | ||
| Retail Price | £72.00 | £151.95 |
| Price per Watt | £0.160/W | £0.323/W |
Frequently Asked Questions
Which is more efficient, the Deep Blue 4.0 N-Type Full Black 450W or the Alpha Pure-RX 470W?
The Alpha Pure-RX 470W is more efficient at 22.6%, compared to 22% for the Deep Blue 4.0 N-Type Full Black 450W. 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 Alpha Pure-RX 470W?
The Alpha Pure-RX 470W has a higher rated output at 470W. This means fewer panels would be needed to reach the same system size compared to the Deep Blue 4.0 N-Type Full Black 450W.
Is the Deep Blue 4.0 N-Type Full Black 450W or Alpha Pure-RX 470W better value for money?
The Deep Blue 4.0 N-Type Full Black 450W is priced lower at £72.00 per panel, saving £79.95 per panel. However, value depends on the full system cost, efficiency, and warranty — use our solar cost calculator to compare total installation costs.
Which solar panel should I choose for my home — the Deep Blue 4.0 N-Type Full Black 450W or the Alpha Pure-RX 470W?
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 →REC
Alpha Pure-RX 470W
470W · 22.6% efficiency · N-type HJT (Heterojunction)
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.