Product comparison · 2 power supply units

Zalman ZM500-ST power supply unit vs Zalman ZM660-XT power supply unit

Key differences

Total power
- ZM500-ST power supply unit:500 W
- ZM660-XT power supply unit:660 W
Efficiency
- ZM500-ST power supply unit:86%
- ZM660-XT power supply unit:88%
Number of SATA power connectors
- ZM500-ST power supply unit:6
- ZM660-XT power supply unit:4
Cabling type
- ZM500-ST power supply unit:Non-Modular
- ZM660-XT power supply unit:Semi-Modular
Dimensions (WxDxH)
- ZM500-ST power supply unit:150 x 140 x 86 mm
- ZM660-XT power supply unit:150 x 180 x 86 mm

Differences highlightedShow differences only

Comparison of ZM500-ST, ZM660-XT
21 specifications	A Zalman ZM500-ST power supply unit Model ZM500-ST View product	B Zalman ZM660-XT power supply unit Model ZM660-XT View product
Power2 differ
Total powerDiffers	500 W	660 W
AC input voltageKnown for one	100 - 240 V	Unknown — not stated by the source
Input currentKnown for one	5 - 10 A	Unknown — not stated by the source
EfficiencyDiffers	86%	88%
Power protection features	Overload, Short circuit	Overload, Short circuit
Ports & interfaces2 differ
Number of SATA power connectorsDiffers	6	4
Peripheral (Molex) power connectors (4-pin)Known for one	Yes	Unknown — not stated by the source
PCI Express power connectors (6-pin)	Yes	Yes
ATX Power connector (24-pin)	Yes	Yes
Floppy drive power connectorKnown for one	1	Unknown — not stated by the source
Cabling typeDiffers	Non-Modular	Semi-Modular
Performanceidentical
Power supply unit (PSU) form factorKnown for one	ATX	Unknown — not stated by the source
Operational conditionsidentical
Operating temperature (T-T)	0 - 40 °C	0 - 40 °C
Storage temperature (T-T)	-20 - 80 °C	-20 - 80 °C
Operating relative humidity (H-H)	5 - 95%	5 - 95%
Storage relative humidity (H-H)	5 - 95%	5 - 95%
Other features1 differ
Dimensions (WxDxH)Differs	150 x 140 x 86 mm	150 x 180 x 86 mm
Ports quantityKnown for one	Unknown — not stated by the source	6
Power requirementsKnown for one	Unknown — not stated by the source	100 - 240VAC, 50-60Hz
Designidentical
Product colourKnown for one	Unknown — not stated by the source	Black
Fan diameterKnown for one	Unknown — not stated by the source	14 cm

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.