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Product comparison · 2 power supply units

be quiet! System Power 11 450W vs be quiet! System Power 11 550W

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  • 60specifications compared
  • 10differ
  • 50identical
  • 2known for one product only

Key differences

The be quiet! System Power 11 550W has 100 W more total power than the be quiet! System Power 11 450W (550 W vs 450 W). The be quiet! System Power 11 550W has 10 W more combined power (+3.3V) than the be quiet! System Power 11 450W (120 W vs 110 W). The be quiet! System Power 11 550W has 100 W more combined power (+12V) than the be quiet! System Power 11 450W (550 W vs 450 W).

  • Total power
    • 450 W
    • 550 W
  • Combined power (+3.3V)
    • 110 W
    • 120 W
  • Combined power (+12V)
    • 450 W
    • 550 W
  • Combined power (+5V)
    • 110 W
    • 120 W
  • Max output current (+12V1)
    • 37.5 A
    • 45.83 A
  • Efficiency
    • 89%
    • 89.7%
  • Noise level
    • 19.1 dB
    • 24.2 dB
  • Weight
    • 1.7 kg
    • 1.92 kg

Side by side

Differences highlightedShow differences only
62 specifications
A

be quiet!

System Power 11 450WView product
B

be quiet!

System Power 11 550WView product
Power6 differ
Total powerDiffers450 W550 W
AC input voltage200 - 240 V200 - 240 V
AC input frequency50 Hz50 Hz
Input current4 A4 A
Power factor0.980.98
Number of +12V rail(s)11
Combined power (+3.3V)Differs110 W120 W
Combined power (+12V)Differs450 W550 W
Combined power (+5V)Differs110 W120 W
Combined power (-12V)3.6 W3.6 W
Combined power (+5Vsb)15 W15 W
Max output current (+3.3V)20 A20 A
Max output current (+12V1)Differs37.5 A45.83 A
Max output current (+5V)20 A20 A
Max output current (-12V)0.3 A0.3 A
Max output current (+5Vsb)3 A3 A
EfficiencyDiffers89%89.7%
Hold time16.86 ms16.86 ms
Power protection featuresOver current, Over power, Over voltage, Overheating, Short circuit, Surge & inrush, Under voltageOver current, Over power, Over voltage, Overheating, Short circuit, Surge & inrush, Under voltage
Ports & interfacesidentical
Motherboard power connector20+4 pin ATX20+4 pin ATX
Number of SATA power connectors55
Peripheral (Molex) power connectors (4-pin)11
PCI Express power connectors (6+2 pin)22
PCI Express power connectors (12-pin)Known for one1
CPU P4 connector (4-pin)Known for one1
CPU power connector (4+4 pin)YesYes
PCI Express connectorYesYes
Cabling typeNon-ModularNon-Modular
Performance1 differ
PurposePCPC
Power supply unit (PSU) form factorATXATX
80 PLUS certification80 PLUS Bronze80 PLUS Bronze
ATX version3.13.1
EPS version2.922.92
Noise levelDiffers19.1 dB24.2 dB
Bearing technologyRifleRifle
Mean time between failures (MTBF)100000 h100000 h
Designidentical
Product colourBlackBlack
Cooling typeActiveActive
Fan diameter12 cm12 cm
Number of fans1 fan(s)1 fan(s)
Fan speed0 - 1800 RPM0 - 1800 RPM
IlluminationNoNo
On/off switchYesYes
Certificatesidentical
Compliance certificatesCB, CE, RoHS, TÜV mark, UKCA, WEEECB, CE, RoHS, TÜV mark, UKCA, WEEE
Waste Electrical and Electronic Equipment (WEEE) complianceYesYes
Weight & dimensions1 differ
Width150 mm150 mm
Depth86 mm86 mm
Height140 mm140 mm
WeightDiffers1.7 kg1.92 kg
Packaging data1 differ
Package width195 mm195 mm
Package depth268 mm268 mm
Package height97 mm97 mm
Package weightDiffers2.1 kg2.3 kg
Package typeBoxBox
Technical detailsidentical
Sustainability certificatesENERGY STAR, ErPENERGY STAR, ErP
Logistics data1 differ
Products per shipping (inner) case6 pc(s)6 pc(s)
Shipping (inner) case gross weightDiffers13.6 kg14.9 kg
Shipping (inner) case height21.8 cm21.8 cm
Shipping (inner) case length55.6 cm55.6 cm
Shipping (inner) case width31.1 cm31.1 cm
Other featuresidentical
Screws includedYesYes
Cable ties includedYesYes

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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