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REC475AA Pure-RX vs REC450AA Pure-RX 14 of 19 identical Swap Change panels

REC REC475AA Pure-RX vs REC REC450AA Pure-RX

REC REC475AA Pure-RX
REC
REC475AA Pure-RX
475 Wp 22.80 % HJT Bifacial
Open panel page Datasheet PDF
VS
REC REC450AA Pure-RX
REC
REC450AA Pure-RX
450 Wp 21.60 % HJT Bifacial
Open panel page Datasheet PDF
The verdict

REC475AA Pure-RX leads on the differences that matter

The largest is module efficiency: 1.20 pp more efficient. 14 of 19 comparable parameters are identical.

See all 5 differences
How alike are they
14 of 19 comparable
parameters are identical
identical differs
01

What actually differs

5 of 19 parameters
Parameter REC475AA Pure-RX REC450AA Pure-RX Difference
Module efficiency 22.80 % 21.60 % 1.20 pp more efficient
Power density 228.1 Wp/m² 216.1 Wp/m² 12.0 Wp/m² higher
Rated power 475 Wp 450 Wp 25 W more power
Weight per kWp 47.8 kg/kWp 50.4 kg/kWp 2.7 kg/kWp lighter
Voltage at max power 55.50 V 54.30 V 1.20 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.
REC475AA Pure-RX
16,138 kWh
REC450AA Pure-RX
15,289 kWh
Lifetime gap
849 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario REC475AA Pure-RX REC450AA Pure-RX
Standard test conditions 25 °C 100.0% of rated power 475 W 450 W
Cool, bright day 40 °C 96.4% of rated power 458 W 434 W
Typical summer roof 55 °C 92.8% of rated power 441 W 418 W
Hot roof 70 °C 89.2% of rated power 424 W 401 W
03

Full specification

Parameter REC475AA Pure-RX REC450AA Pure-RX Difference
Power and efficiency
Rated power 475 Wp 450 Wp +25 W for REC475AA Pure-RX
Module efficiency 22.80 % 21.60 % +1.20 pp for REC475AA Pure-RX
Power density 228.1 Wp/m² 216.1 Wp/m² +12.0 Wp/m² for REC475AA Pure-RX
Open-circuit voltage 65.70 V 65.60 V Effectively the same
Voltage at max power 55.50 V 54.30 V 1.20 V apart
Short-circuit current 9.00 A 8.81 A Effectively the same
Current at max power 8.56 A 8.29 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 47.8 kg/kWp 50.4 kg/kWp -2.7 kg/kWp for REC475AA Pure-RX
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
#2,714 vs #7,652
REC475AA Pure-RX leads by 4,938 places
Power density
#2,760 vs #7,622
REC475AA Pure-RX leads by 4,862 places
Heat behaviour
#13 vs #13
Tied - the same position in the database
Weight
#1,913 vs #3,814
REC475AA Pure-RX leads by 1,901 places
Warranty
#9,798 vs #9,798
Tied - the same position in the database
Overall
#7,034 vs #9,417
REC475AA Pure-RX leads by 2,383 places
05

More useful comparisons

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REC REC475AA Pure-RX vs REC REC Alpha Pure-RX 470 Wp
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REC REC475AA Pure-RX vs REC REC470AA Pure-RX
One difference: module efficiency
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REC REC475AA Pure-RX vs REC REC Alpha Pure-RX 470
4 differences, the largest is product warranty
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REC REC475AA Pure-RX vs REC REC465AA Pure-RX
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REC REC475AA Pure-RX vs REC REC460AA Pure-RX
3 differences, the largest is module efficiency
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REC REC475AA Pure-RX vs REC REC455AA Pure-RX
4 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: REC REC475AA Pure-RX or REC REC450AA Pure-RX?
According to our database: REC REC475AA Pure-RX has higher module efficiency (22.80% vs 21.60%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of REC REC475AA Pure-RX and REC REC450AA Pure-RX?
REC REC475AA Pure-RX has a module efficiency of 22.80%, while REC REC450AA Pure-RX is 21.60%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does REC REC475AA Pure-RX use vs REC REC450AA Pure-RX?
REC REC475AA Pure-RX uses HJT cells; REC REC450AA 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 REC475AA Pure-RX and REC REC450AA Pure-RX?
REC REC475AA Pure-RX has a 25 years power warranty; REC REC450AA 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 REC475AA Pure-RX and REC REC450AA Pure-RX bifacial panels?
Both REC REC475AA Pure-RX and REC REC450AA 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.