Chieftec GPS-450A power supply unit vs Chieftec GPS-500A power supply unit

Comparison of GPS-450A, GPS-500A

13 specifications	A Chieftec GPS-450A power supply unit Model GPS-450A View product	B Chieftec GPS-500A power supply unit Model GPS-500A View product
Power1 differ
Total powerDiffers	450 W	500 W
AC input voltage	100 - 240 V	100 - 240 V
Input current	5 - 10 A	5 - 10 A
Power protection features	Over current, Over voltage, Overload, Short circuit, Under voltage	Over current, Over voltage, Overload, Short circuit, Under voltage
Ports & interfacesidentical
PCI Express power connectors (6-pin)	1	1
CPU power connector (4+4 pin)	Yes	Yes
ATX power connector (20+4 pin)	Yes	Yes
Cabling type	Non-Modular	Non-Modular
Performanceidentical
Noise level	24.4 dB	24.4 dB
Mean time between failures (MTBF)Known for one	100000 h	—Unknown — not stated by the source
Designidentical
Product colour	White	White
Other featuresidentical
Dimensions (WxDxH)	140 x 87 x 150 mm	140 x 87 x 150 mm
Output voltage note	+5V/+3.3V/+12V1/+12V2/-12V/+5VSB	+5V/+3.3V/+12V1/+12V2/-12V/+5VSB

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.