Product comparison · 2 power supply units

be quiet! BN229 power supply unit vs be quiet! SFX Power 2

56specifications compared
32differ
24identical
2known for one product only

Key differences

Total power
- BN229 power supply unit:300 W
- SFX Power 2:400 W
Peak power
- BN229 power supply unit:330 W
- SFX Power 2:450 W
Input current
- BN229 power supply unit:4 A
- SFX Power 2:6 A
Combined power (+3.3V)
- BN229 power supply unit:103 W
- SFX Power 2:120 W
Combined power (+12V)
- BN229 power supply unit:264 W
- SFX Power 2:360 W
Combined power (+5V)
- BN229 power supply unit:103 W
- SFX Power 2:120 W
Combined power (-12V)
- BN229 power supply unit:3.6 W
- SFX Power 2:6 W
Combined power (+5Vsb)
- BN229 power supply unit:15 W
- SFX Power 2:12.5 W

Side by side

Differences highlightedShow differences only

Comparison of BN229, SFX Power 2
58 specifications	A be quiet! BN229 power supply unit Model BN229 View product	B be quiet! SFX Power 2 View product
Power15 differ
Total powerDiffers	300 W	400 W
Peak powerDiffers	330 W	450 W
Input currentDiffers	4 A	6 A
Combined power (+3.3V)Differs	103 W	120 W
Combined power (+12V)Differs	264 W	360 W
Combined power (+5V)Differs	103 W	120 W
Combined power (-12V)Differs	3.6 W	6 W
Combined power (+5Vsb)Differs	15 W	12.5 W
Max output current (+12V1)Differs	13 A	17 A
Max output current (+12V2)Differs	13 A	16 A
Max output current (+5V)Differs	15 A	22 A
Max output current (-12V)Differs	0.3 A	0.5 A
Max output current (+5Vsb)Differs	2 A	2.5 A
EfficiencyDiffers	91.6%	87.5%
Hold timeDiffers	16 ms	24 ms
Ports & interfaces1 differ
Peripheral (Molex) power connectors (4-pin)Differs	2	1
PCI Express power connectors (6+2 pin)Known for one	Unknown — not stated by the source	1
Performance3 differ
Power supply unit (PSU) form factorDiffers	TFX	SFX
80 PLUS certificationDiffers	80 PLUS Gold	80 PLUS Bronze
Noise levelDiffers	26.5 dB	33.9 dB
Design1 differ
Fan speedDiffers	2003	2579
On/off switchKnown for one	Unknown — not stated by the source	Yes
Operational conditions1 differ
Operating temperature (T-T)Differs	0 - 40 °C	10 - 50 °C
Weight & dimensions4 differ
WidthDiffers	85 mm	100 mm
DepthDiffers	185 mm	125 mm
HeightDiffers	65 mm	63.5 mm
WeightDiffers	1.2 kg	950 g
Packaging data4 differ
Package widthDiffers	190 mm	199 mm
Package depthDiffers	85 mm	195 mm
Package heightDiffers	159 mm	75 mm
Package weightDiffers	1.5 kg	1.3 kg
Other features3 differ
Noise level (silent mode, <30%)Differs	12.7 dB	20.7 dB
Noise level (quiet mode, 50%)Differs	14.5 dB	20.9 dB
Noise level (full-load mode, 100%)Differs	26.5 dB	33.9 dB

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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