Product comparison · 2 power supply units

StarTech.com ATX2POWR400E power supply unit vs StarTech.com WattSmart EPS12V Ver 2.91 80 PLUS

Key differences

Total power
- ATX2POWR400E power supply unit:400 W
- WattSmart EPS12V Ver 2.91 80 PLUS:850 W
Operating temperature (T-T)
- ATX2POWR400E power supply unit:10 - 50 °C
- WattSmart EPS12V Ver 2.91 80 PLUS:0 - 50 °C
Weight
- ATX2POWR400E power supply unit:1.52 kg
- WattSmart EPS12V Ver 2.91 80 PLUS:3.15 kg
Package weight
- ATX2POWR400E power supply unit:1.88 kg
- WattSmart EPS12V Ver 2.91 80 PLUS:3.6 kg

Differences highlightedShow differences only

Comparison of ATX2POWR400E, WattSmart EPS12V Ver 2.91 80 PLUS
17 specifications	A StarTech.com ATX2POWR400E power supply unit Model ATX2POWR400E View product	B StarTech.com WattSmart EPS12V Ver 2.91 80 PLUS View product
Power1 differ
Total powerDiffers	400 W	850 W
AC input frequency	50 - 60 Hz	50 - 60 Hz
EfficiencyKnown for one	70%	Unknown — not stated by the source
AC input voltageKnown for one	Unknown — not stated by the source	115 - 230 V
Ports & interfacesidentical
PCI Express power connectors (6-pin)Known for one	Yes	Unknown — not stated by the source
ATX Power connector (24-pin)Known for one	Yes	Unknown — not stated by the source
Cabling typeKnown for one	Non-Modular	Unknown — not stated by the source
I/O portsKnown for one	Unknown — not stated by the source	1 - Split 24/20 pin 1 - EPS Power (8-pin) 4 - PCI E Power 1 - ATX P4 Power F 6 - SATA Power F 6 - LP4 F 2 - SP4 F
Performanceidentical
Mean time between failures (MTBF)	100000 h	100000 h
Operational conditions1 differ
Operating temperature (T-T)Differs	10 - 50 °C	0 - 50 °C
Storage temperature (T-T)Known for one	Unknown — not stated by the source	-20 - 80 °C
Weight & dimensions1 differ
WidthKnown for one	150 mm	Unknown — not stated by the source
HeightKnown for one	86 mm	Unknown — not stated by the source
WeightDiffers	1.52 kg	3.15 kg
Packaging data1 differ
Package weightDiffers	1.88 kg	3.6 kg
Designidentical
Product colourKnown for one	Unknown — not stated by the source	Black
Other featuresidentical
Dimensions (WxDxH)Known for one	Unknown — not stated by the source	150 x 190 x 86 mm

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.