Product comparison · 2 power supply units

Chieftec SFX-250VS power supply unit vs UNYKAch ATX 300W

23specifications compared
14differ
9identical
27known for one product only

Key differences

Total power
- SFX-250VS power supply unit:250 W
- ATX 300W:300 W
AC input frequency
- SFX-250VS power supply unit:50 Hz
- ATX 300W:50 - 60 Hz
Max output current (+3.3V)
- SFX-250VS power supply unit:14 A
- ATX 300W:3.3 A
Max output current (+12V1)
- SFX-250VS power supply unit:18.5 A
- ATX 300W:21.4 A
Max output current (+5V)
- SFX-250VS power supply unit:15 A
- ATX 300W:3 A
Max output current (+5Vsb)
- SFX-250VS power supply unit:3 A
- ATX 300W:2.5 A
Number of SATA power connectors
- SFX-250VS power supply unit:2
- ATX 300W:3
Purpose
- SFX-250VS power supply unit:PC
- ATX 300W:PC/Server

Side by side

Differences highlightedShow differences only

Comparison of SFX-250VS, ATX 300W
50 specifications	A Chieftec SFX-250VS power supply unit Model SFX-250VS View product	B UNYKAch ATX 300W View product
Power6 differ
Total powerDiffers	250 W	300 W
AC input frequencyDiffers	50 Hz	50 - 60 Hz
Max output current (+3.3V)Differs	14 A	3.3 A
Max output current (+12V1)Differs	18.5 A	21.4 A
Max output current (+5V)Differs	15 A	3 A
Max output current (+5Vsb)Differs	3 A	2.5 A
Power protection featuresKnown for one	Unknown — not stated by the source	Over power, Over voltage, Overcharge, Overheating, Overload, Short circuit, Under voltage
Input currentKnown for one	3 A	Unknown — not stated by the source
Power factorKnown for one	0.9	Unknown — not stated by the source
Combined power (+3.3V)Known for one	80 W	Unknown — not stated by the source
Combined power (+5V)Known for one	80 W	Unknown — not stated by the source
Combined power (-12V)Known for one	3.6 W	Unknown — not stated by the source
Combined power (+5Vsb)Known for one	15 W	Unknown — not stated by the source
Ports & interfaces1 differ
Number of SATA power connectorsDiffers	2	3
SATA power cable lengthKnown for one	Unknown — not stated by the source	350,500 mm
Peripheral (Molex) power cable lengthKnown for one	Unknown — not stated by the source	350,650 mm
PCI Express power connectors (8-pin)Known for one	Unknown — not stated by the source	1
PCI Express power cable lengthKnown for one	Unknown — not stated by the source	42 cm
CPU power connector (4+4 pin)Known for one	Unknown — not stated by the source	Yes
CPU power cable lengthKnown for one	Unknown — not stated by the source	42 cm
Motherboard power connectorKnown for one	20+4 pin ATX	Unknown — not stated by the source
ATX power connector (20+4 pin)Known for one	Yes	Unknown — not stated by the source
Floppy drive power connectorKnown for one	1	Unknown — not stated by the source
Performance2 differ
PurposeDiffers	PC	PC/Server
Power supply unit (PSU) form factorDiffers	SFX	ATX
Supported motherboard form factorsKnown for one	Unknown — not stated by the source	ATX
Noise levelKnown for one	Unknown — not stated by the source	28 dB
Design1 differ
Cooling typeKnown for one	Unknown — not stated by the source	Active
Fan diameterDiffers	8 cm	12 cm
Certificates1 differ
Compliance certificatesKnown for one	Unknown — not stated by the source	RoHS
CertificationDiffers	UVP; OVP; SCP; OPP; AFC;	EUP 2013 / EN60950 / TÜV / CE
Weight & dimensions3 differ
WidthDiffers	100 mm	150 mm
DepthDiffers	125 mm	140 mm
HeightDiffers	64 mm	85 mm
WeightKnown for one	Unknown — not stated by the source	976 g
Packaging dataidentical
Package widthKnown for one	Unknown — not stated by the source	165 mm
Package depthKnown for one	Unknown — not stated by the source	215 mm
Package heightKnown for one	Unknown — not stated by the source	90 mm
Package weightKnown for one	Unknown — not stated by the source	1.14 kg
Package typeKnown for one	Unknown — not stated by the source	Box
Other featuresidentical
Package volumeKnown for one	Unknown — not stated by the source	0.0032 cm³

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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