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Product comparison · 2 power supply units

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

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

Key differences

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

Side by side

Differences highlightedShow differences only
58 specifications
A

be quiet!

Pure Power L8 CMView product
B

be quiet!

Straight Power E9View product
Power11 differ
Total powerDiffers430 W400 W
Peak powerDiffers480 W450 W
AC input voltage100 - 240 V100 - 240 V
AC input frequency50 - 60 Hz50 - 60 Hz
Input currentDiffers4 - 8 A3 - 6 A
Maximum input current (@110V)Differs+12V1,+12V2,+3.3V,+5V,+5Vsb,-12V+12V1,+12V2,+12V3,+3.3V,+5V,+5Vsb,-12V
Power factor0.990.99
Power Factor Correction (PFC) typeActiveActive
Combined power (+3.3V)120 W120 W
Combined power (+12V)Differs396 W384 W
Combined power (+5V)120 W120 W
Max output current (+3.3V)24 A24 A
Max output current (+12V)Differs33 A32 A
Max output current (+12V1)Differs22 A18 A
Max output current (+12V2)Differs20 A18 A
Max output current (+12V3)Known for one18 A
Max output current (+5V)Differs15 A17 A
Max output current (-12V)0.3 A0.3 A
Max output current (+5Vsb)3 A3 A
EfficiencyDiffers88%92.9%
Hold timeDiffers14 ms19 ms
Power protection featuresOver current, Over power, Over voltage, Overheating, Short circuit, Under voltageOver current, Over power, Over voltage, Overheating, Short circuit, Under voltage
Combined power (-12V)Known for one3.6 W
Combined power (+5Vsb)Known for one15 W
Ports & interfaces3 differ
Motherboard power connector20+4 pin ATX20+4 pin ATX
Number of SATA power connectorsDiffers45
Peripheral (Molex) power connectors (4-pin)Differs34
PCI Express power connectors (6-pin)11
PCI Express power connectors (6+2 pin)11
CPU P4 connector (4-pin)Known for one1
CPU power connector (4+4 pin)YesYes
Floppy drive power connector11
Cabling typeDiffersSemi-ModularNon-Modular
Performance4 differ
PurposePCPC
Power supply unit (PSU) form factorATXATX
80 PLUS certificationDiffers80 PLUS Bronze80 PLUS Gold
ATX versionDiffers2.32.31
Noise levelDiffers20.1 dB14.6 dB
Bearing technologyKnown for oneFDB
Mean time between failures (MTBF)Differs100000 h300000 h
Design2 differ
Product colourBlackBlack
Cooling typeActiveActive
Fan diameterDiffers12 cm13.5 cm
Number of fans1 fan(s)1 fan(s)
Fan speedDiffers1229800
Operational conditionsidentical
Operating temperature (T-T)0 - 40 °C0 - 40 °C
Certificates1 differ
Compliance certificatesRoHSRoHS
CertificationDiffersErP, WEEE, CE, CB, TUVCE, CB, TÜV, Semko (S)
Weight & dimensions1 differ
Width150 mm150 mm
Depth160 mm160 mm
Height86 mm86 mm
WeightDiffers1.7 kg2.24 kg
Packaging data1 differ
Package weightDiffers2.45 kg2.65 kg
Technical detailsidentical
Sustainability certificatesENERGY STARENERGY STAR
Other features4 differ
Noise level (silent mode, <30%)Differs16.2 dB13.7 dB
Noise level (quiet mode, 50%)Differs16.8 dB13.8 dB
Noise level (full-load mode, 100%)Differs20.1 dB14.6 dB
Package dimensions (WxDxH)Differs105 x 230 x 280 mm248 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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