be quiet! SFX Power 3 300W 80PLUS Bronze

Power supply 300W SFX12V 3.42 / EPS12V 2.92 80PLUS Bronze

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The SFX Power 3 300W 80PLUS Bronze from Be Quiet! has an 80 PLUS Bronze certification and its SFX format makes it suitable for mini PCs and multimedia PCs with PCIe graphics card support. The 12V rail design contributes to high stability.

Power supply 300W SFX12V 3.42 / EPS12V 2.92 80PLUS Bronze

Overview

be quiet! SFX Power 3: Compact and silent 80+ bronze power supply

The SFX Power 3 300W 80PLUS Bronze from Be Quiet! has an 80 PLUS Bronze certification and its SFX format makes it suitable for mini PCs and multimedia PCs with support for PCIe graphics cards. The 12V rail design contributes to high stability as the processor is powered by an independent rail. A PCIe connector is included for demanding peripherals such as graphics cards. This makes the SFX Power 3 300W Bronze the ideal power supply for anyone looking for enough power to support small systems while producing little noise.

Reliability and high efficiency

The temperature-controlled fan ensures quiet operation and produces little waste heat. And because the SFX Power 3 300W Bronze meets the latest safety standards, it protects your PC from overcurrent, overvoltage, undervoltage, short circuits, overloads and similar faults.

  • 80 PLUS Bronze certification (up to 89.2% efficiency)
  • 12V power rail
  • 300W continuous power
  • One PCIe slot for GPU support
  • High quality 80mm temperature controlled fan for quiet operation of up to 29.4dB(A)
Specifications
Select your criteria

General information

Product name

be quiet! SFX Power 3 300W 80PLUS Bronze

Brand

be quiet!

Model

BN320

Power and Efficiency

Power

300 W

80 PLUS certification

Yes

80 PLUS certification

80 PLUS Bronze

Connectivity

Modular

No

Modularity

Non-modular

Power connector(s)

1 X +12V (Power supply P4)
3 X Serial ATA power supply
1 X ATX 20 + 4 Pin
1 X Molex Floppy Disk 4 Pin Female
2 X Molex (4 Pin) Female
1 X PCI Express 6 + 2 Pin

Configurator

PSU-CM compatibility

+12V P4

Cooling

Fan size

80mm

Silent

Yes

Power supply type (PC)

Active

Design

Power format

SFX

Power supply standard

EPS12V
SFX

ATX 3.0

No

ATX 3.1

No

Multi-GPU

None

Typical use

Desktop computer

Physical characteristics

Color

Black

LED RGB

No

Height

63.5 mm

Width

125 mm

Length

100 mm

Warranties

Commercial warranty

Legal warranty

Safety Information

Responsible person

Listan GmbH

Postal address

Wilhelm-Bergner-Str. 11C 21509 Glinde Allemagne

Electronic Address

Product referenced on 27 Apr 2021

Customer reviews
  • 91%
    10 reviews
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  • 9%
    1 review
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  • by SamuelR
    Posted on 10 Jan 2025
    Bought on 28 Dec 2024 from LDLC
    Number of reviews: 9 Average rating: 9

    Very small

    Ideal for small cases, it really does fit everywhere. What's more, its fan makes no noise whatsoever. Perfect

    Model: be quiet! SFX Power 3 450W 80PLUS Bronze
    Review automatically translated
  • by David
    Posted on 17 Sep 2024
    Bought on 1 Apr 2024 from LDLC
    Number of reviews: 17 Average rating: 9

    Practical and inexpensive

    Power supplies under 550W are a rarity.
    This BeQuiet is, as its name suggests, perfectly silent.
    Admittedly, it's non-modular, but I didn't need modularity either. In truth, it does the job and that's all I ask of it.

    Model: be quiet! SFX Power 3 300W 80PLUS Bronze
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  • by Maxime M (streptos)
    Posted on 30 May 2024
    Bought on 30 Apr 2024 from LDLC
    Number of reviews: 16 Average rating: 9

    Lots of cables

    It's been a long time since I bought a non-modular power supply and I remember why. The little Zalman M2 Mini is bursting at the seams. But then, SFX modular power supplies are over 600W and double the price of an equivalent ATX.

    To power a Ryzen 5 3600 and an RTX 3050, 450W is more than enough, and never mind the aesthetics and cable management.

    Model: be quiet! SFX Power 3 450W 80PLUS Bronze
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  • by NicolasC
    Posted on 27 Feb 2024
    Bought on 29 Jan 2024 from LDLC
    Number of reviews: 4 Average rating: 10

    Silent power supply

    Used in a media centre. Quiet, I haven't yet used it to its full potential, but I'll have to wait and see.

    Model: be quiet! SFX Power 3 300W 80PLUS Bronze
    Review automatically translated
  • by Pierre C
    Posted on 9 Jan 2024
    Bought on 16 Aug 2022 from LDLC
    Number of reviews: 55 Average rating: 9

    Food very good

    I was mistaken when I ordered it, thinking I could install it in a conventional box to save space, but I was quite wrong in my understanding of the signs... in short, this 'SFX' is now being used in 'aerial' mode to power my test bench. It's stupid, but it's found its purpose and I'm delighted with it!

    Model: be quiet! SFX Power 3 450W 80PLUS Bronze
    Review automatically translated

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