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Product comparison · 2 power supply units

be quiet! BN639 power supply unit vs be quiet! DARK POWER 12 850W

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  • 20specifications compared
  • 11differ
  • 9identical
  • 56known for one product only

Key differences

The be quiet! DARK POWER 12 850W has 250 W more total power than the be quiet! BN639 power supply unit (850 W vs 600 W). The be quiet! DARK POWER 12 850W has 300 W more peak power than the be quiet! BN639 power supply unit (950 W vs 650 W). The be quiet! BN639 power supply unit has 0.02 more power factor than the be quiet! DARK POWER 12 850W (0.99 vs 0.97). Input current: 10 A on the be quiet! BN639 power supply unit, 13 - 7 A on the be quiet! DARK POWER 12 850W. 80 PLUS certification: 80 PLUS Gold on the be quiet! BN639 power supply unit, 80 PLUS Titanium on the be quiet! DARK POWER 12 850W.

  • Total power
    • 600 W
    • 850 W
  • Peak power
    • 650 W
    • 950 W
  • Input current
    • 10 A
    • 13 - 7 A
  • Power factor
    • 0.99
    • 0.97
  • PCI Express power connectors (6+2 pin)
    • 4
    • 6
  • 80 PLUS certification
    • 80 PLUS Gold
    • 80 PLUS Titanium
  • Mean time between failures (MTBF)
    • 100000 h
    • 200000 h
  • Width
    • 125 mm
    • 150 mm

Side by side

Differences highlightedShow differences only
76 specifications
A

be quiet!

BN639 power supply unit

Model BN639

View product
B

be quiet!

DARK POWER 12 850WView product
Power5 differ
Total powerDiffers600 W850 W
Peak powerDiffers650 W950 W
AC input voltage100 - 240 V100 - 240 V
AC input frequency50 - 60 Hz50 - 60 Hz
Input currentDiffers10 A13 - 7 A
Maximum input current (@110V)Known for one13 A
Maximum input current (@220V)Known for one7 A
Power factorDiffers0.990.97
Power Factor Correction (PFC) typeActiveActive
Combined power (+3.3V)Known for one120 W
Combined power (+12V)Known for one840 W
Combined power (+5V)Known for one120 W
Combined power (-12V)Known for one6 W
Combined power (+5Vsb)Known for one15 W
Max output current (+3.3V)Known for one24 A
Max output current (+12V)Known for one70 A
Max output current (+12V1)Known for one30 A
Max output current (+12V2)Known for one30 A
Max output current (+12V3)Known for one35 A
Max output current (+12V4)Known for one35 A
Max output current (+5V)Known for one24 A
Max output current (-12V)Known for one0.5 A
Max output current (+5Vsb)Known for one3 A
EfficiencyKnown for one93.2%
Hold timeKnown for one21 ms
Power protection featuresDiffersOver current, Over power, Over voltage, Short circuit, Under voltageOver current, Over power, Over voltage, Overheating, Short circuit, Under voltage
Ports & interfaces1 differ
Motherboard power connector20+4 pin ATX20+4 pin ATX
Motherboard power cable lengthKnown for one60 cm
Number of SATA power connectorsKnown for one12
SATA power cable lengthKnown for one600,750,900,1050 mm
Peripheral (Molex) power connectors (4-pin)Known for one5
Peripheral (Molex) power cable lengthKnown for one1050,600,750,900 mm
EPS power connector (8-pin)Known for oneYes
EPS power connector (4+4 pin)Known for oneYes
PCI Express power connectors (6+2 pin)Differs46
PCI Express power cable lengthKnown for one60 cm
ATX power connector (20+4 pin)Known for oneYes
Floppy disk drive cable lengthKnown for one120 cm
Floppy disk drive connectorKnown for oneYes
PCI Express connectorKnown for oneYes
Cabling typeFully-ModularFully-Modular
Performance2 differ
PurposePCPC
Power supply unit (PSU) form factorATXATX
80 PLUS certificationDiffers80 PLUS Gold80 PLUS Titanium
ATX versionKnown for one2.52
EPS versionKnown for one2.92
Noise levelKnown for one20 dB
Bearing technologyKnown for oneFDB
Mean time between failures (MTBF)Differs100000 h200000 h
Designidentical
Product colourBlackBlack
Cooling typeActiveActive
Fan diameterKnown for one13.5 cm
Number of fansKnown for one1 fan(s)
On/off switchKnown for oneYes
Operational conditionsidentical
Operating temperature (T-T)Known for one0 - 40 °C
Packaging contentidentical
Cables includedKnown for oneCPU, DC, PCIe, Peripheral (Molex), SATA
Certificatesidentical
Compliance certificatesKnown for oneRoHS
CertificationKnown for oneWEEE
Safety regulation & standardsidentical
SafetyKnown for oneCE, CB, TÜV, FCC, cTUVus, RCM, BSMI, CU, CCC
Weight & dimensions3 differ
WidthDiffers125 mm150 mm
DepthDiffers130 mm175 mm
HeightDiffers64 mm86 mm
WeightKnown for one1.97 kg
Packaging dataidentical
Package widthKnown for one350 mm
Package depthKnown for one270 mm
Package heightKnown for one120 mm
Package weightKnown for one4.2 kg
Package typeKnown for oneBox
Technical detailsidentical
Sustainability certificatesKnown for oneENERGY STAR, ErP
Sustainability complianceKnown for oneYes
Logistics dataidentical
Products per shipping (inner) caseKnown for one4 pc(s)
Shipping (inner) case gross weightKnown for one18.1 kg
Shipping (inner) case heightKnown for one36.8 cm
Shipping (inner) case lengthKnown for one50.4 cm
Shipping (inner) case widthKnown for one30.5 cm
Harmonized System (HS) codeKnown for one84733020

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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