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be quiet! SFX Power 3 BN320

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be quiet! SFX Power 3 BN320
2021SFX (for compact systems)
300 W
24+4 pin
450 W
24+8 (4+4) pin
Main
Power300 W
Form factorSFX
Specs
PFCactive
Efficiency89 %
Cooling system1 fan
Fan size80 mm
Fan bearingsliding
Certification80+ Bronze
EPS12V version2.92
Power connectors
MB/CPU power supply24+4 pin
SATA3
MOLEX2
PCI-E 8pin (6+2)1
Floppy
Cable systemnon-modular
Cable length
MB350 mm
CPU400 mm
SATA300 mm / 450/600 /
MOLEX300 mm / 450 /
PCI-E400 mm
Max. power
+3.3V16 А
+5V16 А
+12V125 А
-12V0.3 А
+5Vsb2.5 А
+12V300 W
+3.3V +5V85 W
General
Over voltage protection (OVP)
Over power protection (OPP)
Short circuit protection (SCP)
ProtectionOCP, UVP, SIP
Noise level29 dB
Manufacturer's warranty3 years
Dimensions (HxWxD)64x125x100 mm
Weight0.84 kg
Official Websitebequiet.com
Added to E-Catalogjuly 2021
Information in model description is for reference purposes.
Before buying always check characteristics and configuration of product with online store manager
Catalog be quiet! 2025 - new products, best sales and most actual models be quiet!.
How to choose a power supply for a PCBasics of choosing a reliable and balanced power supply for your home, office and gaming computer

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Be Quiet BN320 SFX Power 3 300W

Strong 12V rail with 300W of continuous power 6+2 pin PCIe connector for GPU support High-quality temperature-controlled 80... moremm fan for quiet operation of max. 29.4dB(A) Sleeved or flat black cables up to 60cm 80 PLUS Bronze efficiency (up to 89.2%)
Amazon.co.uk
Delivery: to United Kingdom
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£59.71
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be quiet! SFX POWER 3 - 300W 80+ Bronze Non-Modular Power Supply Unit

Clove.co.uk
Delivery: to United Kingdom
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£73.30
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be quiet! SFX POWER 3 300W power supply unit 20+4 pin ATX Black BN320

Compact and Silent Energy SFX Power 3 300W the first choice compact PSU for mini and media PCs with 80 PLUS&re... moreg; Bronze and PCIe graphics card support. SFX Power 3 300W offers the ideal combination of power quietness and reliability.     - Strong 12V rail with 300W of continuous power - 6+2 pin PCIe connector for GPU support - High-quality temperature-controlled 80mm fan for quiet operation of max. 29.4dB(A) - Sleeved or flat black cables up to 60cm - 80 PLUS® Bronze efficiency (up to 89.2%) - Meets the latest safety and efficiency requirements - Three-year manufacturer’s warranty - Product conception design and quality control in Germany Strong 12V Rail   For a stable PCIe graphics support   A PCIe connector provides power for a demanding graphics card. Safety protections defend against overcurrents over- and undervoltages short circuits and overloads thus keeping your valuable components safe.         300 Watts Continuous Power Output   Ensures a steady and reliable operation   SFX Power 3 can deliver 300W of continuous power. This ensures a steady and reliable operation even when your PC meets an unexpectedly heavy load.       Quiet and Efficient Operation   For mini or media PCs   The high-quality temperature-controlled 80mm fan allows quiet operations of max. 29.4dB(A). The 80 PLUS Bronze certification with an efficiency rating of up to 89.2% is convincing evidence of this PSU’s power saving operation.    
Quzo.co.uk
Delivery: to United Kingdom
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£57.02
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be quiet! SFX Power 3 300W Bronze Wired Power Supply

Scan.co.uk
Delivery: to United Kingdom
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£49.99
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be quiet! SFX POWER 3 300W power supply unit 20+4 pin ATX Black BN320

CoolingFan diameter8 cmNumber of fans1 fan(s)Cooling typeActivePerformanceOn/off switchYesPower supply unit (PSU) form factor... moreSFX80 PLUS certification80 PLUS BronzePurposePCATX version3.42EPS version2.92SafetyCE, CB, TÜV, CUNoise level29.4 dBMean time between failures (MTBF)100000 hBearing technologyRifleHarmonized System (HS) code84733020Design80 PLUS certification80 PLUS BronzeSafetyCE, CB, TÜV, CUProduct colourBlackFan diameter8 cmOn/off switchYesNumber of fans1 fan(s)Cooling typeActivePowerTo
ComputersDeal.com
Delivery: in United Kingdom
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£59.64
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5 more offer(s)
Series be quiet! SFX (for compact systems)Compare using chart →
be quiet! SFX L BN238
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be quiet! SFX Power 3 BN321
from £54.98 
450 W, 24+8 (4+4) pin, 2 х 6+2 pin, SATA 3, Molex 2, SFX, Efficiency 89 %, warranty 3 years
be quiet! SFX Power 3 BN320
from £49.99 
300 W, 24+4 pin, 1 х 6+2 pin, SATA 3, Molex 2, SFX, Efficiency 89 %, warranty 3 years

be quiet! SFX Power 3 configurations

Price for be quiet! SFX Power 3
be quiet! SFX Power 3 BN320from £49.9910 offers
be quiet! SFX Power 3 BN321from £54.989 offers
Video reviews
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PSU be quiet! BN320
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