Product comparison · 2 power supply units

UNYKAch SFX 300W vs UNYKAch SFX 450W

38specifications compared
16differ
22identical
4known for one product only

Key differences

Total power
- SFX 300W:300 W
- SFX 450W:450 W
AC input frequency
- SFX 300W:47 - 63 Hz
- SFX 450W:50 - 60 Hz
Max output current (+3.3V)
- SFX 300W:3.75 A
- SFX 450W:20 A
Max output current (+12V1)
- SFX 300W:21.4 A
- SFX 450W:23 A
Max output current (+5V)
- SFX 300W:3 A
- SFX 450W:20 A
Max output current (-12V)
- SFX 300W:0.3 A
- SFX 450W:0.5 A
Max output current (+5Vsb)
- SFX 300W:2.5 A
- SFX 450W:2 A
Efficiency
- SFX 300W:85%
- SFX 450W:78%

Side by side

Differences highlightedShow differences only

Comparison of SFX 300W, SFX 450W
42 specifications	A UNYKAch SFX 300W View product	B UNYKAch SFX 450W View product
Power8 differ
Total powerDiffers	300 W	450 W
AC input voltage	230 V	230 V
AC input frequencyDiffers	47 - 63 Hz	50 - 60 Hz
Power Factor Correction (PFC) typeKnown for one	Active	Unknown — not stated by the source
Max output current (+3.3V)Differs	3.75 A	20 A
Max output current (+12V1)Differs	21.4 A	23 A
Max output current (+5V)Differs	3 A	20 A
Max output current (-12V)Differs	0.3 A	0.5 A
Max output current (+5Vsb)Differs	2.5 A	2 A
EfficiencyDiffers	85%	78%
Power protection features	Over power, Over voltage, Overcharge, Overheating, Overload, Short circuit, Under voltage	Over power, Over voltage, Overcharge, Overheating, Overload, Short circuit, Under voltage
Ports & interfaces5 differ
Motherboard power connector	20+4 pin ATX	20+4 pin ATX
Motherboard power cable lengthDiffers	38 cm	32 cm
Number of SATA power connectorsDiffers	3	2
SATA power cable lengthDiffers	530 mm	330,480 mm
Peripheral (Molex) power connectors (4-pin)	2	2
Peripheral (Molex) power cable lengthDiffers	680,380 mm	330,480 mm
CPU power connector (4+4 pin)Known for one	Yes	Unknown — not stated by the source
CPU power cable lengthDiffers	42 cm	43 cm
ATX power connector (20+4 pin)	Yes	Yes
Cabling type	Non-Modular	Non-Modular
CPU P4 connector (4-pin)Known for one	Unknown — not stated by the source	1
Performanceidentical
Purpose	PC/Server	PC/Server
Power supply unit (PSU) form factor	SFX	SFX
Noise level	28 dB	28 dB
Designidentical
Product colour	Silver	Silver
Cooling type	Active	Active
Fan diameter	8 cm	8 cm
Number of fans	1 fan(s)	1 fan(s)
On/off switchKnown for one	Unknown — not stated by the source	Yes
Certificates1 differ
Compliance certificates	RoHS	RoHS
CertificationDiffers	EUP 2013 / ErP 617/2013 / TÜV / CE	EUP 2013 / EN60950 / TÜV / CE
Weight & dimensions1 differ
Width	125 mm	125 mm
Depth	100 mm	100 mm
Height	65 mm	65 mm
WeightDiffers	750 g	558 g
Packaging data1 differ
Package width	155 mm	155 mm
Package depth	130 mm	130 mm
Package height	75 mm	75 mm
Package weightDiffers	844 g	718 g
Package type	Box	Box
Other featuresidentical
Package volume	0.0015 cm³	0.0015 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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