Product comparison · 2 power supply units

be quiet! Pure Power L8 CM vs be quiet! Straight Power E9

53specifications compared
27differ
26identical
5known for one product only

Key differences

Total power
- Pure Power L8 CM:430 W
- Straight Power E9:400 W
Peak power
- Pure Power L8 CM:480 W
- Straight Power E9:450 W
Input current
- Pure Power L8 CM:4 - 8 A
- Straight Power E9:3 - 6 A
Combined power (+12V)
- Pure Power L8 CM:396 W
- Straight Power E9:384 W
Max output current (+12V)
- Pure Power L8 CM:33 A
- Straight Power E9:32 A
Max output current (+12V1)
- Pure Power L8 CM:22 A
- Straight Power E9:18 A
Max output current (+12V2)
- Pure Power L8 CM:20 A
- Straight Power E9:18 A
Max output current (+5V)
- Pure Power L8 CM:15 A
- Straight Power E9:17 A

Side by side

Differences highlightedShow differences only

Comparison of Pure Power L8 CM, Straight Power E9
58 specifications	A be quiet! Pure Power L8 CM View product	B be quiet! Straight Power E9 View product
Power11 differ
Total powerDiffers	430 W	400 W
Peak powerDiffers	480 W	450 W
Input currentDiffers	4 - 8 A	3 - 6 A
Maximum input current (@110V)Differs	+12V1,+12V2,+3.3V,+5V,+5Vsb,-12V	+12V1,+12V2,+12V3,+3.3V,+5V,+5Vsb,-12V
Combined power (+12V)Differs	396 W	384 W
Max output current (+12V)Differs	33 A	32 A
Max output current (+12V1)Differs	22 A	18 A
Max output current (+12V2)Differs	20 A	18 A
Max output current (+12V3)Known for one	Unknown — not stated by the source	18 A
Max output current (+5V)Differs	15 A	17 A
EfficiencyDiffers	88%	92.9%
Hold timeDiffers	14 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 & interfaces3 differ
Number of SATA power connectorsDiffers	4	5
Peripheral (Molex) power connectors (4-pin)Differs	3	4
CPU P4 connector (4-pin)Known for one	Unknown — not stated by the source	1
Cabling typeDiffers	Semi-Modular	Non-Modular
Performance4 differ
80 PLUS certificationDiffers	80 PLUS Bronze	80 PLUS Gold
ATX versionDiffers	2.3	2.31
Noise levelDiffers	20.1 dB	14.6 dB
Bearing technologyKnown for one	Unknown — not stated by the source	FDB
Mean time between failures (MTBF)Differs	100000 h	300000 h
Design2 differ
Fan diameterDiffers	12 cm	13.5 cm
Fan speedDiffers	1229	800
Certificates1 differ
CertificationDiffers	ErP, WEEE, CE, CB, TUV	CE, CB, TÜV, Semko (S)
Weight & dimensions1 differ
WeightDiffers	1.7 kg	2.24 kg
Packaging data1 differ
Package weightDiffers	2.45 kg	2.65 kg
Other features4 differ
Noise level (silent mode, <30%)Differs	16.2 dB	13.7 dB
Noise level (quiet mode, 50%)Differs	16.8 dB	13.8 dB
Noise level (full-load mode, 100%)Differs	20.1 dB	14.6 dB
Package dimensions (WxDxH)Differs	105 x 230 x 280 mm	248 x 328 x 102 mm

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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