All categories
Phones & WearablesView all 31

Departments

Phones & WearablesComputers & TabletsComponents & StorageNetworkingPrinting & OfficePower & ChargingTV, Audio & VideoGaming, Toys & RobotsKitchen AppliancesHome AppliancesPersonal Care & HealthSmart Home & SecurityCar & MobilityTools & GardenCameras & Photo

Shopping country

Browse

All categoriesCompare products

Product comparison · 2 power supply units

be quiet! System Power 8 vs be quiet! System Power B8

Add a product
  • 43specifications compared
  • 16differ
  • 27identical
  • 17known for one product only

Key differences

  • Total power
    • 500 W
    • 350 W
  • Input current
    • 4 A
    • 3 A
  • Combined power (+3.3V)
    • 110 W
    • 103 W
  • Combined power (+12V)
    • 456 W
    • 324 W
  • Combined power (+5V)
    • 110 W
    • 103 W
  • Max output current (+3.3V)
    • 24 A
    • 19 A
  • Max output current (+12V1)
    • 24 A
    • 20 A
  • Max output current (+12V2)
    • 20 A
    • 16 A

Side by side

Differences highlightedShow differences only
60 specifications
A

be quiet!

System Power 8View product
B

be quiet!

System Power B8View product
Power8 differ
Total powerDiffers500 W350 W
AC input voltage200 - 240 V200 - 240 V
AC input frequency50 Hz50 Hz
Input currentDiffers4 A3 A
Power factor0.980.98
Power Factor Correction (PFC) typeActiveActive
Combined power (+3.3V)Differs110 W103 W
Combined power (+12V)Differs456 W324 W
Combined power (+5V)Differs110 W103 W
Combined power (-12V)Known for one3.6 W
Combined power (+5Vsb)Known for one15 W
Max output current (+3.3V)Differs24 A19 A
Max output current (+12V)Known for one38 A
Max output current (+12V1)Differs24 A20 A
Max output current (+12V2)Differs20 A16 A
Max output current (+5V)15 A15 A
Max output current (-12V)0.3 A0.3 A
Max output current (+5Vsb)Known for one3 A
Efficiency87%87%
Hold time18 ms18 ms
Power protection featuresOver current, Over power, Over voltage, Overheating, Short circuit, Under voltageOver current, Over power, Over voltage, Overheating, Short circuit, Under voltage
Ports & interfaces2 differ
Motherboard power connector20+4 pin ATX20+4 pin ATX
Number of PATA power connectors22
Number of SATA power connectorsDiffers64
Peripheral (Molex) power connectors (4-pin)Known for one0
PCI Express power connectors (6+2 pin)Differs21
CPU power connector (4+4 pin)YesYes
Cabling typeNon-ModularNon-Modular
ATX power connector (20+4 pin)Known for oneYes
Performanceidentical
PurposePCPC
Power supply unit (PSU) form factorATXATX
80 PLUS certification80 PLUS80 PLUS
ATX version2.42.4
Noise levelKnown for one30.1 dB
Bearing technologyKnown for oneSleeve
Mean time between failures (MTBF)Known for one100000 h
Design2 differ
Product colourDiffersBlackGrey
Cooling typeActiveActive
Fan diameter12 cm12 cm
Number of fans1 fan(s)1 fan(s)
Fan speedDiffers21001650
Fan locationTopTop
On/off switchYesYes
Certificates1 differ
Compliance certificatesRoHSRoHS
CertificationDiffersCE, CB, TÜV, RCM, CUErP, WEEE
Weight & dimensions1 differ
Width150 mm150 mm
Depth140 mm140 mm
Height86 mm86 mm
WeightDiffers1.82 kg1.6 kg
Packaging dataidentical
Package widthKnown for one97 mm
Package depthKnown for one195 mm
Package heightKnown for one268 mm
Package weightKnown for one2.17 kg
Package typeKnown for oneBox
Technical detailsidentical
Sustainability certificatesENERGY STARENERGY STAR
Other features2 differ
Noise level (silent mode, <30%)Known for one15.5 dB
Noise level (quiet mode, 50%)Differs16.4 dB12.3 dB
Noise level (full-load mode, 100%)Differs30.1 dB24.9 dB
Operational conditionsidentical
Operating temperature (T-T)Known for one0 - 40 °C
Safety regulation & standardsidentical
SafetyKnown for oneCE, CB, TÜV, RCM, CU

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.

More power supply unit comparisons

All power supply unit comparisons