be quiet! BN284 Straight Power 11 Power BN284

World Class Quiet and Efficiency

be quiet! Straight Power 11 850W raises the bar for systems that demand virtually inaudible operation without power quality compromises. This PSU is clearly the best choice for super silent systems.

Design



Fan diameter



13.5 cm


Illumination



No


Number of fans



1 fan(s)


On/off switch



Yes


Product colour



Black


Logistics data



Harmonized System (HS) code



84733020


Other features



Cable management



Yes


Cable ties included



Yes


Noise level (full-load mode, 100%)



24.98 dB


Noise level (quiet mode, 50%)



10.61 dB


Noise level (silent mode, 30%)



9.71 dB


Screws included



Yes


Package dimensions



Depth (package,cm)



32.8 cm


Gross Weight (Package, kg)



2.34 kg


Height (package,cm)



10.2 cm


Width (package,cm)



24.8 cm


Packaging data



Manual



Yes


Performance



80 PLUS certification



80 PLUS Gold


ATX version



2.4


Bearing technology



FDB


Certification



CE, FCC, T�V, cTUVus, RCM, BSMI, CU


EPS version



2.92


Power supply unit (PSU) form factor



ATX


Purpose



PC


Silent mode



Yes


Ports & interfaces



Cabling type



Modular


CPU power cable length



70 cm


CPU power connector (4+4 pin)



Yes


Floppy disk drive connector



Yes


Motherboard power cable length



60 cm


Motherboard power connector



20+4 pin ATX


Number of PATA power connectors



4


Number of SATA power connectors



11


PCI Express power cable length



60 cm


PCI Express power connectors (6+2 pin)



4


SATA power cable length



550


Power



AC input frequency



50 - 60 Hz


AC input voltage



100 - 240 V


Combined power (+12V)



849.6 Watt


Combined power (+3.3V)



150 Watt


Combined power (+5V)



150 Watt


Combined power (+5Vsb)



15 Watt


Combined power (-12V)



6 Watt


Efficiency



93 %


Hold time



21.1 Millisecond


Input current



10 A


Max output current (+12V1)



21 A


Max output current (+12V2)



21 A


Max output current (+12V3)



26 A


Max output current (+12V4)



26 A


Max output current (+3.3V)



25 A


Max output current (+5V)



25 A


Max output current (+5Vsb)



3 A


Max output current (-12V)



0.5 A


Peak power



920 Watt


Power factor



0.99


Power Factor Correction (PFC) type



Active


Power protection features



Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage


Total power



850 Watt


Product dimensions



Net Weight (Product, kg)



1.8 kg


Product Depth



17 cm


Product Height



8.6 cm


Product Width



15 cm


Technical details



Sustainability certificates



RoHS, ENERGY STAR


Vendor information



Brand Name


be quiet!


Warranty



1 Year(s)