Product comparison · 2 power supply units

StarTech.com Professional 400 Watt ATX12V 2.01 Computer Power Supply w/ PCIe & SATA vs StarTech.com 300 Watt ATX Replacement Computer PC Power Supply

9specifications compared
6differ
3identical
37known for one product only

Key differences

Total power
- Professional 400 Watt ATX12V 2.01 Computer Power Supply w/ PCIe & SATA:400 W
- 300 Watt ATX Replacement Computer PC Power Supply:300 W
Mean time between failures (MTBF)
- Professional 400 Watt ATX12V 2.01 Computer Power Supply w/ PCIe & SATA:100000 h
- 300 Watt ATX Replacement Computer PC Power Supply:40000 h
Weight
- Professional 400 Watt ATX12V 2.01 Computer Power Supply w/ PCIe & SATA:1.9 kg
- 300 Watt ATX Replacement Computer PC Power Supply:1.86 kg
Package width
- Professional 400 Watt ATX12V 2.01 Computer Power Supply w/ PCIe & SATA:100 mm
- 300 Watt ATX Replacement Computer PC Power Supply:92 mm
Package height
- Professional 400 Watt ATX12V 2.01 Computer Power Supply w/ PCIe & SATA:218 mm
- 300 Watt ATX Replacement Computer PC Power Supply:162 mm
Package weight
- Professional 400 Watt ATX12V 2.01 Computer Power Supply w/ PCIe & SATA:2.3 kg
- 300 Watt ATX Replacement Computer PC Power Supply:1.95 kg

Side by side

Differences highlightedShow differences only

Comparison of ATX2PW400PRO, ATXPOWER300
46 specifications	A StarTech.com Professional 400 Watt ATX12V 2.01 Computer Power Supply w/ PCIe & SATA Model ATX2PW400PRO View product	B StarTech.com 300 Watt ATX Replacement Computer PC Power Supply Model ATXPOWER300 View product
Power1 differ
Total powerDiffers	400 W	300 W
Input currentKnown for one	5.5 - 10 A	Unknown — not stated by the source
Max output current (+3.3V)Known for one	30 A	Unknown — not stated by the source
Max output current (+12V1)Known for one	14 A	Unknown — not stated by the source
Max output current (+12V2)Known for one	15 A	Unknown — not stated by the source
Max output current (+5V)Known for one	28 A	Unknown — not stated by the source
Max output current (-12V)Known for one	1 A	Unknown — not stated by the source
Max output current (+5Vsb)Known for one	2.5 A	Unknown — not stated by the source
EfficiencyKnown for one	68%	Unknown — not stated by the source
AC input frequencyKnown for one	Unknown — not stated by the source	50 - 60 Hz
Ports & interfacesidentical
Motherboard power connectorKnown for one	20+4 pin ATX	Unknown — not stated by the source
Number of SATA power connectorsKnown for one	4	Unknown — not stated by the source
Peripheral (Molex) power connectors (4-pin)Known for one	4	Unknown — not stated by the source
ATX power connector (20+4 pin)Known for one	Yes	Unknown — not stated by the source
Floppy disk drive connectorKnown for one	Yes	Unknown — not stated by the source
Floppy drive power connectorKnown for one	2	Unknown — not stated by the source
PCI Express connectorKnown for one	Yes	Unknown — not stated by the source
I/O portsKnown for one	Unknown — not stated by the source	6 - LP4 F 2 - SP4 F 1 - ATX 20 pin F 1 - SATA Power F 1 - P4 ATX M 12V 1 - AUX 6-pin F
Performance1 differ
PurposeKnown for one	PC	Unknown — not stated by the source
Power supply unit (PSU) form factorKnown for one	ATX	Unknown — not stated by the source
ATX versionKnown for one	2.1	Unknown — not stated by the source
Bearing technologyKnown for one	Ball bearing	Unknown — not stated by the source
Mean time between failures (MTBF)Differs	100000 h	40000 h
Noise levelKnown for one	Unknown — not stated by the source	27.4 dB
Designidentical
Product colourKnown for one	Stainless steel	Unknown — not stated by the source
Fan diameterKnown for one	8 cm	Unknown — not stated by the source
Number of fansKnown for one	1 fan(s)	Unknown — not stated by the source
Fan locationKnown for one	Side	Unknown — not stated by the source
On/off switchKnown for one	Yes	Unknown — not stated by the source
Packaging contentidentical
Cables includedKnown for one	AC	Unknown — not stated by the source
Certificatesidentical
Compliance certificatesKnown for one	RoHS	Unknown — not stated by the source
CertificationKnown for one	UR, FCC	Unknown — not stated by the source
Weight & dimensions1 differ
WidthKnown for one	140 mm	Unknown — not stated by the source
DepthKnown for one	150 mm	Unknown — not stated by the source
HeightKnown for one	86 mm	Unknown — not stated by the source
WeightDiffers	1.9 kg	1.86 kg
Packaging data3 differ
ManualKnown for one	Yes	Unknown — not stated by the source
Package widthDiffers	100 mm	92 mm
Package heightDiffers	218 mm	162 mm
Package weightDiffers	2.3 kg	1.95 kg
Operational conditionsidentical
Operating temperature (T-T)Known for one	Unknown — not stated by the source	0 - 50 °C
Storage temperature (T-T)Known for one	Unknown — not stated by the source	-20 - 80 °C
Other featuresidentical
Dimensions (WxDxH)Known for one	Unknown — not stated by the source	149 x 150 x 85 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.

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