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Product comparison · 2 power supply units

be quiet! POWER ZONE 2 750W vs be quiet! System Power 11 450W

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  • 55specifications compared
  • 25differ
  • 30identical
  • 23known for one product only

Key differences

The be quiet! POWER ZONE 2 750W has 300 W more total power than the be quiet! System Power 11 450W (750 W vs 450 W). The be quiet! System Power 11 450W has 100 - 240 V more AC input voltage than the be quiet! POWER ZONE 2 750W (200 - 240 V vs 100 - 240 V). The be quiet! POWER ZONE 2 750W has 10 W more combined power (+3.3V) than the be quiet! System Power 11 450W (120 W vs 110 W). AC input frequency: 50/60 Hz on the be quiet! POWER ZONE 2 750W, 50 Hz on the be quiet! System Power 11 450W. Cabling type: Fully-Modular on the be quiet! POWER ZONE 2 750W, Non-Modular on the be quiet! System Power 11 450W.

  • Total power
    • 750 W
    • 450 W
  • AC input voltage
    • 100 - 240 V
    • 200 - 240 V
  • AC input frequency
    • 50/60 Hz
    • 50 Hz
  • Combined power (+3.3V)
    • 120 W
    • 110 W
  • Combined power (+12V)
    • 750 W
    • 450 W
  • Combined power (+5V)
    • 120 W
    • 110 W
  • Efficiency
    • 92.5%
    • 89%
  • Hold time
    • 24.5 ms
    • 16.86 ms

Side by side

Differences highlightedShow differences only
78 specifications
A

be quiet!

POWER ZONE 2 750WView product
B

be quiet!

System Power 11 450WView product
Power8 differ
Total powerDiffers750 W450 W
Peak powerKnown for one820 W
AC input voltageDiffers100 - 240 V200 - 240 V
AC input frequencyDiffers50/60 Hz50 Hz
Maximum input current (@110V)Known for one10 A
Maximum input current (@220V)Known for one5 A
Power factor0.980.98
Number of +12V rail(s)11
Combined power (+3.3V)Differs120 W110 W
Combined power (+12V)Differs750 W450 W
Combined power (+5V)Differs120 W110 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 (+12V)Known for one62.5 A
Max output current (+5V)20 A20 A
Max output current (-12V)0.3 A0.3 A
Max output current (+5Vsb)3 A3 A
EfficiencyDiffers92.5%89%
Hold timeDiffers24.5 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
Input currentKnown for one4 A
Max output current (+12V1)Known for one37.5 A
Ports & interfaces3 differ
Motherboard power connector20+4 pin ATX20+4 pin ATX
Motherboard power cable lengthKnown for one60 cm
Number of SATA power connectorsDiffers65
SATA power cable lengthKnown for one550,700,850,1000 mm
Peripheral (Molex) power connectors (4-pin)11
Peripheral (Molex) power cable lengthKnown for one850 mm
EPS power connector (8-pin)Known for oneYes
PCI Express power connectors (6+2 pin)Differs32
PCI Express power connectors (16-pin)Known for one1
PCI Express power cable lengthKnown for one60 cm
CPU P4 connector (4-pin)Known for one1
CPU power connector (4+4 pin)YesYes
CPU power cable lengthKnown for one70 cm
PCI Express connectorYesYes
Cabling typeDiffersFully-ModularNon-Modular
Performance2 differ
PurposePCPC
Power supply unit (PSU) form factorATXATX
80 PLUS certificationDiffers80 PLUS Platinum80 PLUS Bronze
ATX version3.13.1
EPS version2.922.92
Noise levelDiffers15.8 dB19.1 dB
Bearing technologyRifleRifle
Mean time between failures (MTBF)100000 h100000 h
Design1 differ
Product colourBlackBlack
Cooling typeActiveActive
Fan diameterDiffers14 cm12 cm
Number of fans1 fan(s)1 fan(s)
IlluminationNoNo
On/off switchYesYes
Fan speedKnown for one0 - 1800 RPM
Operational conditionsidentical
Operating temperature (T-T)Known for one0 - 40 °C
Storage temperature (T-T)Known for one-40 - 70 °C
Operating relative humidity (H-H)Known for one0 - 85%
Storage relative humidity (H-H)Known for one0 - 95%
Certificates1 differ
Compliance certificatesDiffersBSMI, CB, CCC, CE, Federal Communications Commission (FCC), RCM, RoHS, TÜV mark, UKCA, WEEECB, CE, RoHS, TÜV mark, UKCA, WEEE
Waste Electrical and Electronic Equipment (WEEE) complianceYesYes
Weight & dimensions2 differ
Width150 mm150 mm
DepthDiffers160 mm86 mm
HeightDiffers86 mm140 mm
WeightKnown for one1.7 kg
Packaging data4 differ
ManualKnown for oneYes
Manual languagesKnown for oneGerman, English, Spanish, French, Polish, Russian, Ukrainian
Package widthDiffers248 mm195 mm
Package depthDiffers328 mm268 mm
Package heightDiffers102 mm97 mm
Package weightDiffers3.21 kg2.1 kg
Package typeBoxBox
Logistics data4 differ
Products per shipping (inner) case6 pc(s)6 pc(s)
Shipping (inner) case gross weightDiffers19.3 kg13.6 kg
Shipping (inner) case heightDiffers34.6 cm21.8 cm
Shipping (inner) case lengthDiffers65.1 cm55.6 cm
Shipping (inner) case widthDiffers28.2 cm31.1 cm
Other featuresidentical
Screws includedYesYes
Cable ties includedYesYes
Technical detailsidentical
Sustainability certificatesKnown for oneENERGY STAR, ErP

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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