Product comparison · 2 power supply units

be quiet! BN128 power supply unit vs be quiet! TFX-300W power supply unit 20+4 pin ATX ATX Black

27specifications compared
18differ
9identical
32known for one product only

Key differences

Total power
- BN128 power supply unit:650 W
- TFX-300W power supply unit 20+4 pin ATX ATX Black:300 W
Input current
- BN128 power supply unit:9 A
- TFX-300W power supply unit 20+4 pin ATX ATX Black:4.5 A
Max output current (+3.3V)
- BN128 power supply unit:24 A
- TFX-300W power supply unit 20+4 pin ATX ATX Black:20 A
Max output current (+12V)
- BN128 power supply unit:20 A
- TFX-300W power supply unit 20+4 pin ATX ATX Black:20.83 A
Max output current (+5V)
- BN128 power supply unit:30 A
- TFX-300W power supply unit 20+4 pin ATX ATX Black:22 A
Max output current (+5Vsb)
- BN128 power supply unit:3 A
- TFX-300W power supply unit 20+4 pin ATX ATX Black:2 A
Efficiency
- BN128 power supply unit:87%
- TFX-300W power supply unit 20+4 pin ATX ATX Black:83%
Hold time
- BN128 power supply unit:19 ms
- TFX-300W power supply unit 20+4 pin ATX ATX Black:17 ms

Side by side

Differences highlightedShow differences only

Comparison of BN128, TFX-300W
59 specifications	A be quiet! BN128 power supply unit Model BN128 View product	B be quiet! TFX-300W power supply unit 20+4 pin ATX ATX Black Model TFX-300W View product
Power10 differ
Total powerDiffers	650 W	300 W
AC input voltage	100 - 240 V	100 - 240 V
AC input frequency	50 - 60 Hz	50 - 60 Hz
Input currentDiffers	9 A	4.5 A
Maximum input current (@110V)Differs	+12V,+12V1,+12V2,+12V3,+12V4,+3.3V,+5V,+5Vsb,-12V	+12V1,+12V2,+3.3V,+5V,+5Vsb,-12V
Power factorKnown for one	Unknown — not stated by the source	0.9
Combined power (+3.3V)Known for one	Unknown — not stated by the source	110 W
Combined power (+12V)Known for one	Unknown — not stated by the source	250 W
Combined power (+5V)Known for one	Unknown — not stated by the source	110 W
Max output current (+3.3V)Differs	24 A	20 A
Max output current (+12V)Differs	20 A	20.83 A
Max output current (+5V)Differs	30 A	22 A
Max output current (-12V)	0.5 A	0.5 A
Max output current (+5Vsb)Differs	3 A	2 A
EfficiencyDiffers	87%	83%
Hold timeDiffers	19 ms	17 ms
Power protection featuresDiffers	Over current, Over power, Over voltage, Short circuit, Under voltage, Overheating	Over current, Over power, Over voltage, Short circuit, Under voltage
Peak powerKnown for one	750 W	Unknown — not stated by the source
Power Factor Correction (PFC) typeKnown for one	Active	Unknown — not stated by the source
Ports & interfaces2 differ
Motherboard power connectorKnown for one	Unknown — not stated by the source	20+4 pin ATX
Number of SATA power connectorsDiffers	9	2
Peripheral (Molex) power connectors (4-pin)Known for one	Unknown — not stated by the source	3
CPU P4 connector (4-pin)	1	1
Floppy drive power connectorKnown for one	Unknown — not stated by the source	1
Connector(s)Known for one	Unknown — not stated by the source	IEC C14
Cabling typeDiffers	Semi-Modular	Non-Modular
PCI Express power connectors (6-pin)Known for one	2	Unknown — not stated by the source
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
Performance1 differ
Purpose	PC	PC
Power supply unit (PSU) form factor	ATX	ATX
80 PLUS certificationDiffers	80 PLUS Silver	80 PLUS
ATX version	2.3	2.3
Bearing technologyKnown for one	Unknown — not stated by the source	Rifle
Mean time between failures (MTBF)	100000 h	100000 h
Compatible productsKnown for one	Unknown — not stated by the source	Intel C6
EPS versionKnown for one	2.92	Unknown — not stated by the source
Noise levelKnown for one	22 dB	Unknown — not stated by the source
Design2 differ
Product colour	Black	Black
Fan diameterDiffers	12 cm	8 cm
Number of fansKnown for one	Unknown — not stated by the source	1 fan(s)
Fan speedDiffers	2000	3600
Fan locationKnown for one	Unknown — not stated by the source	Side
LED indicatorsKnown for one	Unknown — not stated by the source	No
Operational conditions1 differ
Operating temperature (T-T)Differs	10 - 40 °C	10 - 50 °C
Certificates1 differ
Compliance certificatesKnown for one	Unknown — not stated by the source	RoHS
CertificationDiffers	CE, CB	ENERGY STAR 4.0, ErP, WEEE, RoHS
Safety regulation & standardsidentical
SafetyKnown for one	Unknown — not stated by the source	CE, CB, TUV, N, S, Fl, D
Packaging dataidentical
Package weightKnown for one	Unknown — not stated by the source	1.41 kg
Technical detailsidentical
Sustainability certificatesKnown for one	Unknown — not stated by the source	ENERGY STAR
Other features1 differ
Dimensions (WxDxH)Differs	86 x 200 x 150 mm	70 x 85 x 177 mm
Package dimensions (WxDxH)Known for one	Unknown — not stated by the source	159 x 195 x 80 mm
Parallel processing technology supportKnown for one	Unknown — not stated by the source	Not supported
Power managementKnown for one	Unknown — not stated by the source	Yes
Power over Ethernet (PoE)Known for one	Unknown — not stated by the source	No
Power supply typeKnown for one	Unknown — not stated by the source	AC/DC
Redundant power supply (RPS) supportKnown for one	Unknown — not stated by the source	No
Power rocker switchKnown for one	Unknown — not stated by the source	No
Weight & dimensionsidentical
WeightKnown for one	2 kg	Unknown — not stated by the source

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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