Product comparison · 2 power supply units

be quiet! BN263 power supply unit vs UNYKAch SFX 450W

33specifications compared
25differ
8identical
33known for one product only

Key differences

Total power
- BN263 power supply unit:500 W
- SFX 450W:450 W
AC input voltage
- BN263 power supply unit:100 - 240 V
- SFX 450W:230 V
Max output current (+3.3V)
- BN263 power supply unit:24 A
- SFX 450W:20 A
Max output current (+12V1)
- BN263 power supply unit:28 A
- SFX 450W:23 A
Max output current (+5V)
- BN263 power supply unit:15 A
- SFX 450W:20 A
Max output current (-12V)
- BN263 power supply unit:0.3 A
- SFX 450W:0.5 A
Max output current (+5Vsb)
- BN263 power supply unit:3 A
- SFX 450W:2 A
Efficiency
- BN263 power supply unit:91%
- SFX 450W:78%

Side by side

Differences highlightedShow differences only

Comparison of BN263, SFX 450W
66 specifications	A be quiet! BN263 power supply unit Model BN263 View product	B UNYKAch SFX 450W View product
Power9 differ
Total powerDiffers	500 W	450 W
Peak powerKnown for one	550 W	Unknown — not stated by the source
AC input voltageDiffers	100 - 240 V	230 V
AC input frequency	50 - 60 Hz	50 - 60 Hz
Input currentKnown for one	5 - 8 A	Unknown — not stated by the source
Power Factor Correction (PFC) typeKnown for one	Active	Unknown — not stated by the source
Combined power (+3.3V)Known for one	120 W	Unknown — not stated by the source
Combined power (+12V)Known for one	480 W	Unknown — not stated by the source
Combined power (+5V)Known for one	120 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
Max output current (+3.3V)Differs	24 A	20 A
Max output current (+12V1)Differs	28 A	23 A
Max output current (+12V2)Known for one	20 A	Unknown — not stated by the source
Max output current (+5V)Differs	15 A	20 A
Max output current (-12V)Differs	0.3 A	0.5 A
Max output current (+5Vsb)Differs	3 A	2 A
EfficiencyDiffers	91%	78%
Power protection featuresDiffers	Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage	Over power, Over voltage, Overcharge, Overheating, Overload, Short circuit, Under voltage
Ports & interfaces3 differ
Motherboard power connector	20+4 pin ATX	20+4 pin ATX
Motherboard power cable lengthDiffers	55 cm	32 cm
Number of PATA power connectorsKnown for one	3	Unknown — not stated by the source
Number of SATA power connectorsDiffers	6	2
Peripheral (Molex) power connectors (4-pin)Differs	0	2
PCI Express power connectors (6+2 pin)Known for one	2	Unknown — not stated by the source
CPU power connector (4+4 pin)Known for one	Yes	Unknown — not stated by the source
ATX power connector (20+4 pin)	Yes	Yes
Floppy disk drive connectorKnown for one	Yes	Unknown — not stated by the source
Floppy drive power connectorKnown for one	1	Unknown — not stated by the source
PCI Express connectorKnown for one	Yes	Unknown — not stated by the source
Cabling type	Non-Modular	Non-Modular
SATA power cable lengthKnown for one	Unknown — not stated by the source	330,480 mm
Peripheral (Molex) power cable lengthKnown for one	Unknown — not stated by the source	330,480 mm
CPU P4 connector (4-pin)Known for one	Unknown — not stated by the source	1
CPU power cable lengthKnown for one	Unknown — not stated by the source	43 cm
Performance2 differ
PurposeDiffers	PC	PC/Server
Power supply unit (PSU) form factorDiffers	ATX	SFX
80 PLUS certificationKnown for one	80 PLUS Silver	Unknown — not stated by the source
ATX versionKnown for one	2.4	Unknown — not stated by the source
Bearing technologyKnown for one	Rifle	Unknown — not stated by the source
Mean time between failures (MTBF)Known for one	100000 h	Unknown — not stated by the source
Noise levelKnown for one	Unknown — not stated by the source	28 dB
Design2 differ
Product colourDiffers	Black	Silver
Fan diameterDiffers	12 cm	8 cm
Number of fans	1 fan(s)	1 fan(s)
Fan speedKnown for one	1243	Unknown — not stated by the source
On/off switch	Yes	Yes
Cooling typeKnown for one	Unknown — not stated by the source	Active
Packaging contentidentical
Cables includedKnown for one	AC	Unknown — not stated by the source
Certificates1 differ
Compliance certificates	RoHS	RoHS
CertificationDiffers	CE, CB, TÜV, FCC, cTUVus, RCM (Australia), BSMI, CU (Russia)	EUP 2013 / EN60950 / TÜV / CE
Weight & dimensions4 differ
WidthDiffers	150 mm	125 mm
DepthDiffers	150 mm	100 mm
HeightDiffers	86 mm	65 mm
WeightDiffers	1.96 kg	558 g
Packaging data4 differ
ManualKnown for one	Yes	Unknown — not stated by the source
Package widthDiffers	240 mm	155 mm
Package depthDiffers	210 mm	130 mm
Package heightDiffers	96 mm	75 mm
Package weightDiffers	2.17 kg	718 g
Package type	Box	Box
Technical detailsidentical
Sustainability certificatesKnown for one	ENERGY STAR	Unknown — not stated by the source
Other featuresidentical
Noise level (silent mode, <30%)Known for one	11.4 dB	Unknown — not stated by the source
Noise level (quiet mode, 50%)Known for one	12 dB	Unknown — not stated by the source
Noise level (full-load mode, 100%)Known for one	23.7 dB	Unknown — not stated by the source
Package volumeKnown for one	Unknown — not stated by the source	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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