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be quiet! SFX Power 3 BN321 (SFX POWER 3 450)

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be quiet! SFX Power 3 BN321
SFX (for compact systems)
300 W
24+4 pin
450 W
24+8 (4+4) pin
Main
Power450 W
Form factorSFX
Specs
PFCactive
Efficiency89 %
Cooling systemactive (fan)
Fan size80 mm
Fan bearingsliding
Certification80+ Bronze
EPS12V version2.92
Power connectors
MB/CPU power supply24+8 (4+4) pin
SATA3
MOLEX2
PCI-E 8pin (6+2)2
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
+12V137.5 А
-12V0.3 А
+5Vsb2.5 А
+12V450 W
+3.3V +5V85 W
General
Over voltage protection (OVP)
Over power protection (OPP)
Short circuit protection (SCP)
ProtectionOCP, UVP, SIP
Noise level34 dB
Manufacturer's warranty3 years
Dimensions (HxWxD)64x125x100 mm
Weight0.89 kg
Official Websitebequiet.com
Added to E-CatalogJuly 2021
P/N
SFX POWER 3 450

Compact and quiet small size SFX power supply. This power supply is designed to complete ultra-compact Mini-ITX or Micro ATX computer systems. The model is equipped with an 80 mm fan, controlled by a special controller. The cooler is quiet, even at the maximum power load, the cooling system will not make noise louder than 33.8 dB. In general, such a device will allow you to supply electricity to a very productive PC using modern components with optimized power consumption.

computer power supply be quiet! The SFX Power 3 BN321 has a single 12V power line unit with all 450W of power available. Professional developers have worked hard on the electrical circuit, which is confirmed by the 80+ Bronze certificate. The power supply will not run hot, and idle power consumption is kept to a minimum. This power supply has a good gaming potential. Two PCIe 6 + 2 pin connectors are available for connecting a video card, which will allow you to install a modern graphics adapter with an optimized power supply on your PC.

The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
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BEQUIET BN321 450W SFX Power Supply

BEQUIET BN321 450W SFX Power 3 PSU The BEQUIET BN321 450W SFX Power 3 PSU is the perfect power solution for discerning build... moreers of compact PCs. Designed for mini-ITX systems, media centers, and small form factor gaming rigs, this power supply delivers reliable 450W continuous power with whisper-quiet operation. Its high-efficiency design and robust build quality ensure stability and longevity, making it an ideal choice for tech enthusiasts who demand performance and silence. Features 450W continuous power output for stable system performance. Dedicated 6+2 pin PCIe connector for powering demanding graphics cards. High-quality, temperature-controlled 80mm rifle bearing fan for near-silent operation (max. 29.4dB(A)). 80 PLUS Bronze certified for up to 89.2% efficiency, reducing energy waste and heat generation. Sleeved or flat black cables up to 60cm for clean cable management. Comprehensive safety protections against overcurrent, overvoltage, undervoltage, short circuits, and overloads. Designed and quality-controlled in Germany, ensuring premium build quality and reliability. Three-year manufacturer's warranty for peace of mind. Specifications Brand: BEQUIET Model: BN321 Power Output: 450W Continuous Form Factor: SFX Efficiency Certification: 80 PLUS Bronze Fan: 80mm Temperature-Controlled Rifle Bearing Fan Maximum Noise Level: 29.4dB(A) Cables: Sleeved or flat black, up to 60cm Warranty: 3 Years EAN: 4260052188279
ICPC computers
Delivery: in United Kingdom
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£60.64
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Be Quiet BN321

EU Plug.SFX Power 3 450W, the compact PSU from be quiet that gives you more for your mini or media PC.It provides enough powe... morer to support powerful PCIe graphics cards while offering the ideal combination of power, quietness and reliability.That makes it the perfect choice for compact PC systems that perform beyond the ordinary.Features:- Strong 12V rail with 450W of continuous power.- Two 6+2pin PCIe connectors for powerful GPUs.- High-quality temperature-controlled 80mm fan for quiet operation of max.33.8dB(A).- Sleeved or flat black cables up to 60cm.- 80 PLUS® Bronze efficiency (up to 89.3%).- Meets the latest safety and efficiency requirements.- Standby draw less than 0.11 watts.Specifications:- Total.Power:450 W.- AC input voltage:100.- 240 V.- Peak.Power:500 W.- Motherboard power connector:20+4 pin ATX.- Motherboard power cable length:35 cm.- SATA power cable length:300,450,600 mm.- Purpose:PC, Power supply unit (PSU) form factor:SFX.- 80 PLUS certification:80 PLUS Bronze.- Cooling type:Active.- Fan diameter:8 cm.- Width:125 mm.- Depth:100 mm.- Height:64 mm.
Tradeinn.com
Delivery: in United Kingdom
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£64.99
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be quiet! SFX POWER 3 450W power supply unit 20+4 pin ATX Black BN321

Compact and Silent Energy SFX Power 3 450W the first choice compact PSU for mini and media PCs with 80 PLUS&re... moreg; Bronze and PCIe graphics card support. SFX Power 3 450W offers the ideal combination of power quietness and reliability.     - Strong 12V rail with 450W 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.         450 Watts Continuous Power Output   Ensures a steady and reliable operation   SFX Power 3 can deliver 450W 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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£69.54
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be quiet! SFX POWER 3 450W power supply unit 20+4 pin ATX Black BN321

Strong 12V rail with 450W of continuous power. Two 6+2pin PCIe connectors for powerful GPUs. High-quality temperature-control... moreled 80mm fan for quiet operation of max. 33.8dB(A). Sleeved or flat black cables up to 60cm. 80 PLUS® Bronze efficiency (up to 89.3%). Meets the latest safety and efficiency requirements. Standby draw less than 0.11 watts. Product conception, design and quality control in Germany. SFX Power 3 450W, the compact PSU from be quiet! that gives you more for your mini or media PC. It provides enough power to support powerful PCIe graphics cards while offering the ideal combination of power, quietness and reliability. That makes it the perfect choice for compact PC systems that perform beyond the ordinary.. Power. Power protection features. Over current, Over power, Over voltage, Short circuit, Under voltage. Hold time. 21 ms. Efficiency. 85.9%. Max output current (+5Vsb). 2.5 A. Max output current (-12V). 0.3 A. Max output current (+5V). 16 A. Max output current (+12V1). 37.5 A. Max output current (+3.3V). 16 A. Combined power (+5V). 85 W. Combined power (+12V). 450 W. Combined power (+3.3V). 85 W. Power Factor Correction (PFC) type. Active. Power factor. 0.98. Maximum input current (@220V). 2.5 A. Maximum input current (@110V). 6 A. Input current. 6/2.5 A. AC input frequency. 50 - 60 Hz. AC input voltage. 100 - 240 V. Peak power. 500 W. Total power. 450 W. Ports & interfaces. Cabling type. Non-Modular. Floppy drive power connector. 1. Floppy disk drive cable length. 60 cm. PCI Express power cable length. 55 cm. PCI Express power connectors (6+2 pin). 2. EPS power connector (4+4 pin). Yes. Peripheral (Molex) power cable length. 300,450 mm. Peripheral (Molex) power connectors (4-pin). 2. SATA power cable length. 300,450,600 mm. Number of SATA power connectors. 3. Motherboard power cable length. 35 cm. Motherboard power connector. 20+4 pin ATX. Performance. Mean time between failures (MTBF). 100000 h. Bearing technology. Rifle. Noise level. 33.8 dB. EPS version. 2.92. ATX version. 3.42. 80 PLUS certification. 80 PLUS Bronze. Power supply unit (PSU) form factor. SFX. Purpose. PC. Design. On/off switch. Yes. Number of fans. 1 fan(s). Fan diameter. 8 cm. Cooling type. Active. Product colour. Black. Safety regulation & standards. Safety. CE, CB, TÜV, CU. Certificates. Compliance certificates. RoHS, WEEE. Weight & dimensions. Weight. 890 g. Height. 64 mm. Depth. 100 mm. Width. 125 mm. Packaging data. Package type. Box. Package weight. 1.24 kg. Package height. 207 mm. Package depth. 75 mm. Package width. 197 mm. Technical details. Sustainability compliance. Yes. Sustainability certificates. ENERGY STAR, ErP. Logistics data. Harmonized System (HS) code. 84733020. Shipping (inner) case length. 45.7 cm. Shipping (inner) case width. 26.5 cm. Shipping (inner) case height. 23.3 cm. Products per shipping (inner) case. 6 pc(s). Shipping (inner) case gross weight. 8.19 kg. manual pdf. leaflet. Cables
Backtotheoffice.co.uk
Delivery: in United Kingdom
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£71.99
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be quiet SFX Power 3 450W 80 PLUS Bronze efficiency power supply SFX BN321

BN321 Strong 12 V cable with 450 W power Two PCIe ports for powerful GPUs Coated cable or ribbon cable with up to 60 cm le... morength Temperature-controlled 80 mm Qualit fan for quiet system operation of max. 33.8 dB(A)
Amazon.co.uk
Delivery: to United Kingdom
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£77.88
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Series be quiet! SFX (for compact systems)Compare using chart →

be quiet! SFX Power 3 configurations

Price for be quiet! SFX Power 3
be quiet! SFX Power 3 BN320from £49.453 offers
be quiet! SFX Power 3 BN321from £60.646 offers
Video reviews

No force majeure

The be quiet! SFX Power 3 BN321 450W power supply unit attracts attention with its reliable security system, which ensures stable operation of the PC in various conditions. In addition to standard protection systems (OVP, OPP, SCP), the unit is equipped with a voltage stabilizer (SIP), which operates effectively at input parameters from 100 to 240 V. Thanks to a well-thought-out electronic circuit, the power supply eliminates power drops. The +12 V line is capable of providing the declared 450 W, and 85 W is allocated for powering peripheral devices. The manufacturer claims that the unit is capable of withstanding a peak load of up to 500 W, making it an ideal choice for home and office PCs, as well as gaming systems. The SFX form factor is ideal for compact Mini Tower cases, as well as Desktop and Cube Case builds.

80 Plus Bronze Certification

be quiet! SFX Power 3 BN321 is 80 Plus Bronze certified, which confirms its high energy efficiency. Thanks to the use of active PFC, the efficiency of the unit reaches 89%, which contributes to minimal heat generation and requires only a little ventilation. The 80 mm fan runs on a Rifle sleeve bearing and is distinguished by a low noise level (13 dB at 50% load, 34 dB at maximum speed). The unit has an automatic speed control system (AFC). The non-removable cables are equipped with all the necessary connectors for connecting the motherboard, processor (4+4 pin) and mid-range graphics cards (two 6+2 pin lines), allowing you to easily connect graphics cards such as the MSI GeForce RTX 4060 Ti VENTUS 2X BLACK 8G OC.

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