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REC450AA Pure-RX vs REC Alpha Pure-RX 470 10 of 18 identical Swap Change panels

REC REC450AA Pure-RX vs REC REC Alpha Pure-RX 470

REC REC450AA Pure-RX
REC
REC450AA Pure-RX
450 Wp 21.60 % HJT Bifacial
Open panel page Datasheet PDF
VS
REC REC Alpha Pure-RX 470
REC
REC Alpha Pure-RX 470
470 Wp 22.60 % HJT
Open panel page Datasheet PDF
The verdict

REC Alpha Pure-RX 470 leads on the differences that matter

The largest is module efficiency: 1.00 pp more efficient. 10 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 8 differences
How alike are they
10 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

8 of 18 parameters
Parameter REC450AA Pure-RX REC Alpha Pure-RX 470 Difference
Module efficiency 21.60 % 22.60 % 1.00 pp more efficient
Power density 216.1 Wp/m² 225.7 Wp/m² 9.6 Wp/m² higher
Product warranty 20 yrs 25 yrs 5 yrs longer
Rated power 450 Wp 470 Wp 20 W more power
Weight per kWp 50.4 kg/kWp 48.3 kg/kWp 2.1 kg/kWp lighter
Bifacial Yes No Yes vs No
Dimensions 1728x1205x30 mm 1728x1205 mm 1728x1205x30 mm vs 1728x1205 mm
Voltage at max power 54.30 V 55.40 V 1.10 V 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 (-0.240 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
REC450AA Pure-RX
15,289 kWh
REC Alpha Pure-RX 470
15,968 kWh
Lifetime gap
679 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario REC450AA Pure-RX REC Alpha Pure-RX 470
Standard test conditions 25 °C 100.0% of rated power 450 W 470 W
Cool, bright day 40 °C 96.4% of rated power 434 W 453 W
Typical summer roof 55 °C 92.8% of rated power 418 W 436 W
Hot roof 70 °C 89.2% of rated power 401 W 419 W
03

Full specification

Parameter REC450AA Pure-RX REC Alpha Pure-RX 470 Difference
Power and efficiency
Rated power 450 Wp 470 Wp +20 W for REC Alpha Pure-RX 470
Module efficiency 21.60 % 22.60 % +1.00 pp for REC Alpha Pure-RX 470
Power density 216.1 Wp/m² 225.7 Wp/m² +9.6 Wp/m² for REC Alpha Pure-RX 470
Open-circuit voltage 65.60 V 65.70 V Effectively the same
Voltage at max power 54.30 V 55.40 V 1.10 V apart
Short-circuit current 8.81 A 8.95 A Effectively the same
Current at max power 8.29 A 8.49 A Effectively the same
Temperature
Temperature coefficient -0.240 %/°C -0.240 %/°C Same
Mechanical
Dimensions 1728x1205x30 mm 1728x1205 mm 1728x1205x30 mm vs 1728x1205 mm
Module area 2.082 m² 2.082 m² Same
Weight 22.7 kg 22.7 kg Same
Weight per kWp 50.4 kg/kWp 48.3 kg/kWp -2.1 kg/kWp for REC Alpha Pure-RX 470
Warranty and degradation
Product warranty 20 yrs 25 yrs +5 yrs for REC Alpha Pure-RX 470
Performance warranty 25 yrs 25 yrs Same
Annual degradation 0.25 %/yr 0.25 %/yr Same
Technology
Cell technology HJT HJT Same
Cell type Monocrystalline Monocrystalline Same
Cell count 88 - Not published by REC
Bifacial Yes No Yes vs No
04

Against the whole database

14,005 panels
Efficiency
#7,652 vs #3,658
REC Alpha Pure-RX 470 leads by 3,994 places
Power density
#7,622 vs #3,843
REC Alpha Pure-RX 470 leads by 3,779 places
Heat behaviour
#13 vs #13
Tied - the same position in the database
Weight
#3,814 vs #2,187
REC Alpha Pure-RX 470 leads by 1,627 places
Warranty
#9,798 vs #9,798
Tied - the same position in the database
Overall
#9,417 vs #6,389
REC Alpha Pure-RX 470 leads by 3,028 places
05

More useful comparisons

Open the full database
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REC REC450AA Pure-RX vs REC REC470AA Pure-RX
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One difference: module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: REC REC450AA Pure-RX or REC REC Alpha Pure-RX 470?
According to our database: REC REC Alpha Pure-RX 470 has higher module efficiency (22.60% vs 21.60%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of REC REC450AA Pure-RX and REC REC Alpha Pure-RX 470?
REC REC450AA Pure-RX has a module efficiency of 21.60%, while REC REC Alpha Pure-RX 470 is 22.60%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does REC REC450AA Pure-RX use vs REC REC Alpha Pure-RX 470?
REC REC450AA Pure-RX uses HJT cells; REC REC Alpha Pure-RX 470 uses HJT. 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 REC REC450AA Pure-RX and REC REC Alpha Pure-RX 470?
REC REC450AA Pure-RX has a 25 years power warranty; REC REC Alpha Pure-RX 470 has a 25 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 REC REC450AA Pure-RX and REC REC Alpha Pure-RX 470 bifacial panels?
REC REC450AA Pure-RX is bifacial (captures light from both faces); REC REC Alpha Pure-RX 470 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.