Product comparison · 2 power supply units

be quiet! Efficient Power F1 vs be quiet! Straight Power E9 CM

44specifications compared
23differ
21identical
18known for one product only

Key differences

Total power
- Efficient Power F1:400 W
- Straight Power E9 CM:680 W
Input current
- Efficient Power F1:3 - 6 A
- Straight Power E9 CM:5 - 10 A
Combined power (+3.3V)
- Efficient Power F1:120 W
- Straight Power E9 CM:160 W
Combined power (+12V)
- Efficient Power F1:384 W
- Straight Power E9 CM:660 W
Combined power (+5V)
- Efficient Power F1:120 W
- Straight Power E9 CM:160 W
Max output current (+12V)
- Efficient Power F1:18 A
- Straight Power E9 CM:55 A
Max output current (+5V)
- Efficient Power F1:22 A
- Straight Power E9 CM:28 A
Max output current (-12V)
- Efficient Power F1:0.3 A
- Straight Power E9 CM:0.5 A

Side by side

Differences highlightedShow differences only

Comparison of Efficient Power F1, Straight Power E9 CM
62 specifications	A be quiet! Efficient Power F1 View product	B be quiet! Straight Power E9 CM View product
Power11 differ
Total powerDiffers	400 W	680 W
Peak powerKnown for one	Unknown — not stated by the source	750 W
Input currentDiffers	3 - 6 A	5 - 10 A
Maximum input current (@110V)Differs	+12V1,+12V2,+3.3V,+5V,+5Vsb,-12V	+12V1,+12V2,+12V3,+12V4,+3.3V,+5V,+5Vsb,-12V
Power factorKnown for one	Unknown — not stated by the source	0.99
Combined power (+3.3V)Differs	120 W	160 W
Combined power (+12V)Differs	384 W	660 W
Combined power (+5V)Differs	120 W	160 W
Max output current (+12V)Differs	18 A	55 A
Max output current (+12V3)Known for one	Unknown — not stated by the source	22 A
Max output current (+12V4)Known for one	Unknown — not stated by the source	22 A
Max output current (+5V)Differs	22 A	28 A
Max output current (-12V)Differs	0.3 A	0.5 A
EfficiencyDiffers	92%	93%
Hold timeDiffers	32 ms	19 ms
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 & interfaces5 differ
Motherboard power connectorDiffers	24-pin ATX	20+4 pin ATX
Number of SATA power connectorsDiffers	5	9
Peripheral (Molex) power connectors (4-pin)Differs	3	6
PCI Express power connectors (6+2 pin)Differs	1	4
CPU P4 connector (4-pin)Known for one	Unknown — not stated by the source	1
Cabling typeDiffers	Non-Modular	Semi-Modular
ATX Power connector (24-pin)Known for one	Yes	Unknown — not stated by the source
Performance2 differ
Noise levelDiffers	30 dB	23.6 dB
Bearing technologyKnown for one	Unknown — not stated by the source	FDB
Mean time between failures (MTBF)Differs	100000 h	300000 h
Design1 differ
Fan diameterDiffers	12 cm	13.5 cm
Fan speedKnown for one	Unknown — not stated by the source	1390
Fan locationKnown for one	Top	Unknown — not stated by the source
Operational conditionsidentical
Operating temperature (T-T)Known for one	Unknown — not stated by the source	0 - 40 °C
Certificates1 differ
CertificationDiffers	CE, CB, TÜV, Semko, ErP, WEEE	CE, CB, TÜV, Semko (S)
Weight & dimensions3 differ
WidthDiffers	140 mm	150 mm
DepthDiffers	150 mm	160 mm
WeightDiffers	1.97 kg	2.66 kg
Packaging dataidentical
Package weightKnown for one	Unknown — not stated by the source	3.08 kg
Other featuresidentical
Noise level (silent mode, <30%)Known for one	Unknown — not stated by the source	13.7 dB
Noise level (quiet mode, 50%)Known for one	Unknown — not stated by the source	13.7 dB
Noise level (full-load mode, 100%)Known for one	Unknown — not stated by the source	23.6 dB
Package dimensions (WxDxH)Known for one	Unknown — not stated by the source	248 x 328 x 102 mm
Power supply typeKnown for one	AC/DC	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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