Product comparison · 2 power supply units

be quiet! Straight Power E7 vs Zalman ZM500-ST power supply unit

Key differences

Total power
- Straight Power E7:580 W
- ZM500-ST power supply unit:500 W
Cabling type
- Straight Power E7:Semi-Modular
- ZM500-ST power supply unit:Non-Modular

Differences highlightedShow differences only

Comparison of Straight Power E7, ZM500-ST
20 specifications	A be quiet! Straight Power E7 View product	B Zalman ZM500-ST power supply unit Model ZM500-ST View product
Power1 differ
Total powerDiffers	580 W	500 W
Input currentKnown for one	Unknown — not stated by the source	5 - 10 A
EfficiencyKnown for one	Unknown — not stated by the source	86%
Power protection featuresKnown for one	Unknown — not stated by the source	Overload, Short circuit
AC input frequencyKnown for one	50 - 60 Hz	Unknown — not stated by the source
Ports & interfaces1 differ
Cabling typeDiffers	Semi-Modular	Non-Modular
I/O portsKnown for one	1 x ATX 12V 24-Pin1x 5 x 4-Pin Molex (HDD) 5x 2 x 4-Pin Floppy (FDD) 2x 6 x S-ATA6x 1 x 4-Pin 12V 1x 1 x P8 Connector 1x 2 x 6-Pin PCI-Express 2x 1 x 6+2-Pin PCI-Express 1x 2 x 3-Pin Fan Connector 2x 2 x 4-Pin Fan Connector 2x	Unknown — not stated by the source
Performanceidentical
Power supply unit (PSU) form factorKnown for one	Unknown — not stated by the source	ATX
Operational conditionsidentical
Operating temperature (T-T)Known for one	Unknown — not stated by the source	0 - 40 °C
Storage temperature (T-T)Known for one	Unknown — not stated by the source	-20 - 80 °C
Operating relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 95%
Storage relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 95%
Other featuresidentical
Dimensions (WxDxH)Known for one	Unknown — not stated by the source	150 x 140 x 86 mm
Designidentical
Product colourKnown for one	Black	Unknown — not stated by the source

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.