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REC450AA Pure-RX vs REC455AA Pure-RX 18 of 19 identical Swap Change panels

REC REC450AA Pure-RX vs REC REC455AA Pure-RX

REC REC450AA Pure-RX
REC
REC450AA Pure-RX
450 Wp 21.60 % HJT Bifacial
Open panel page Datasheet PDF
VS
REC REC455AA Pure-RX
REC
REC455AA Pure-RX
455 Wp 21.90 % HJT Bifacial
Open panel page Datasheet PDF
The verdict

REC455AA Pure-RX leads on the differences that matter

The largest is module efficiency: 0.30 pp more efficient. 18 of 19 comparable parameters are identical.

See the one difference
How alike are they
18 of 19 comparable
parameters are identical
identical differs
01

What actually differs

1 of 19 parameters
Parameter REC450AA Pure-RX REC455AA Pure-RX Difference
Module efficiency 21.60 % 21.90 % 0.30 pp more efficient
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
REC455AA Pure-RX
15,459 kWh
Lifetime gap
170 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario REC450AA Pure-RX REC455AA Pure-RX
Standard test conditions 25 °C 100.0% of rated power 450 W 455 W
Cool, bright day 40 °C 96.4% of rated power 434 W 439 W
Typical summer roof 55 °C 92.8% of rated power 418 W 422 W
Hot roof 70 °C 89.2% of rated power 401 W 406 W
03

Full specification

Parameter REC450AA Pure-RX REC455AA Pure-RX Difference
Power and efficiency
Rated power 450 Wp 455 Wp Effectively the same
Module efficiency 21.60 % 21.90 % +0.30 pp for REC455AA Pure-RX
Power density 216.1 Wp/m² 218.5 Wp/m² Effectively the same
Open-circuit voltage 65.60 V 65.60 V Same
Voltage at max power 54.30 V 54.60 V Effectively the same
Short-circuit current 8.81 A 8.84 A Effectively the same
Current at max power 8.29 A 8.34 A Effectively the same
Temperature
Temperature coefficient -0.240 %/°C -0.240 %/°C Same
Mechanical
Dimensions 1728x1205x30 mm 1728x1205x30 mm Same
Module area 2.082 m² 2.082 m² Same
Weight 22.7 kg 22.7 kg Same
Weight per kWp 50.4 kg/kWp 49.9 kg/kWp Effectively the same
Warranty and degradation
Product warranty 20 yrs 20 yrs Same
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 88 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#7,652 vs #6,783
REC455AA Pure-RX leads by 869 places
Power density
#7,622 vs #6,948
REC455AA Pure-RX leads by 674 places
Heat behaviour
#13 vs #13
Tied - the same position in the database
Weight
#3,814 vs #3,272
REC455AA Pure-RX leads by 542 places
Warranty
#9,798 vs #9,798
Tied - the same position in the database
Overall
#9,417 vs #8,984
REC455AA Pure-RX leads by 433 places
05

More useful comparisons

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06

Written summary

07

Questions about this pairing

Which panel is better: REC REC450AA Pure-RX or REC REC455AA Pure-RX?
According to our database: REC REC455AA Pure-RX has higher module efficiency (21.90% 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 REC455AA Pure-RX?
REC REC450AA Pure-RX has a module efficiency of 21.60%, while REC REC455AA Pure-RX is 21.90%. 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 REC455AA Pure-RX?
REC REC450AA Pure-RX uses HJT cells; REC REC455AA Pure-RX 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 REC455AA Pure-RX?
REC REC450AA Pure-RX has a 25 years power warranty; REC REC455AA Pure-RX 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 REC455AA Pure-RX bifacial panels?
Both REC REC450AA Pure-RX and REC REC455AA Pure-RX are bifacial - they capture reflected light from the ground, which can add 5-15% more annual energy on ground-mount or elevated rooftop installations with a light surface beneath.

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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.