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be quiet - Straight Power 11 450W 80PLUS Gold

Modular power supply 450W ATX 12V 2.4/EPS 12V

Last price 107€95
Holy Moly!
Overview

Ultimate silence for exceptional efficiency


The be quiet! Straight Power 11 modular power supply offers quiet operation without compromising on quality. It is 80PLUS Gold certified and offers excellent energy efficiency. An ideal choice for quiet configurations, multi-GPU configurations, multimedia systems and systems for 3D photo/video applications.

100% modular cable management


Thanks to fully modular cable management, cables that are not needed in the system are left out. As a result, the system always appears very tidy. Due to the less cluttered layout of the system, the air flow is more fluid, which means less noise and heat inside the housing. In addition, installation is much easier.

SilentWings 3 fan


The high-end SilentWings 3 fan delivers superior airflow with very little noise. Thanks to its unique and optimised blade design, durable dynamic fluid bearing system and 6-pole motor, this fan eliminates operating noise, with the added bonus of minimal energy consumption and a very long service life. In addition, the funnel-shaped fan opening allows for increased airflow resulting in higher cooling performance.

80PLUS Gold Certification


The be quiet! Straight Power 11 450W is 80PLUS Gold certified, with an efficiency of up to 93%. The main advantages are low power consumption and better, quieter cooling.

Wireless design inside the power supply


The Straight Power 11 450W operates wirelessly on the DC side inside the power supply. This results in improved cooling airflow and limited signal disturbance due to the elimination of cables. This innovative design also results in longer component life.

Innovative technologies and maximum compatibility for future systems


The use of LLC and Synchronous Rectifier (SR) technology provides improved operating stability and voltage regulation. The power supply is equipped with a DC/DC converter that significantly improves voltage quality and stability at high loads. These technologies ensure safe operation for the next generation of processors and graphics cards.


Main features:

  • Modular cable management for simplified, customised installation, reducing space requirements and improving ventilation and airflow
  • SilentWings 3 135mm fan with funnel-shaped fan opening in the power supply case
  • Wireless design on the DC side for improved cooling and component longevity
  • 80PLUS Gold certification (up to 93% efficiency)
  • Four high-performance 12V rails
  • Japanese capacitors rated at 105°C for stability and reliability
  • ErP and Energy Star 6.1 compliant
  • 5 year manufacturer's warranty
Specifications
Select your criteria

General information

Product name

be quiet - Straight Power 11 450W 80PLUS Gold

Brand

be quiet!

Model

BN280

Power and Efficiency

Power

450 W

80 PLUS certification

Yes

80 PLUS / Cybenetics certification

80 PLUS Gold

Connectivity

Modular

Yes

Modularity

100% modular

Power connector(s)

1 X +12V (Power supply P8 - 2 x P4)
8 X Serial ATA power supply
1 X ATX 20 + 4 Pin
3 X Molex (4 Pin) Female
2 X PCI Express 6 + 2 Pin

Configurator

PSU-CM compatibility

+12V P4
+12V P8

Cooling

Fan size

135mm

Silent

Yes

Power supply type (PC)

Active

Design

Power format

ATX/EPS

Power supply standard

ATX12V
EPS12V

Multi-GPU

None

Typical use

Desktop computer

Physical characteristics

Color

Black

LED RGB

No

Height

86 mm

Width

150 mm

Length

160 mm

Weight

2.08 kg

Warranties

Commercial warranty

Legal warranty

Product referenced on 23 Jan 2018

Customer reviews
Global rating
9/10
based on 85 reviews Editorial and moderation guide
  • 85%
    72 reviews
  • 9%
    8 reviews
  • 4%
    3 reviews
  • 0%
  • 2%
    2 reviews
  • by Bisounnours
    Posted on 10 Apr 2025
    Bought on 25 Oct 2021 from LDLC
    Number of reviews: 34 Average rating: 9

    Long live modular

    An animated power supply, but before you can saturate the 850w, you're going to have to blow your budget on components and, above all, your electricity bill.

    Model: be quiet! Straight Power 11 850W 80PLUS Platinum
    Review automatically translated
  • by JonathanD
    Posted on 30 Nov 2024
    Bought on 9 Sep 2024 from LDLC
    Number of reviews: 2 Average rating: 10

    very quiet

    Ultra-quiet, high-performance power supply, I really recommend it for a MAO configuration. Ldlc is top notch for delivery tracking.

    Model: be quiet! Straight Power 11 750W 80PLUS Gold
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  • by FabriceM
    Posted on 4 Nov 2024
    Bought on 4 Oct 2024 from LDLC
    Number of reviews: 2 Average rating: 10

    A great product from Be Quiet!

    This Be Quiet! power supply meets all the criteria for a "Very good product" award!
    The first important point is that it's quiet, and the second is that it's powerful and robust, which won me over!
    It's good value for money and I'd recommend it for use in your home.

    Model: be quiet! Straight Power 11 850W 80PLUS Gold
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  • by JeanG
    Posted on 16 Oct 2024
    Bought on 2 Feb 2022 from LDLC
    Number of reviews: 3 Average rating: 8

    At the top

    Quality power supply that's very quiet, no coil whine (no high-pitched noise).
    The cables are good quality, the power supply is stable in terms of electrical voltage and doesn't heat up very much.
    There's nothing to say, it's a quality product that I intend to keep for 8-10 years without any problem.

    Model: be quiet! Straight Power 11 850W 80PLUS Gold
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  • by VincentA
    Posted on 7 Sep 2024
    Bought on 7 Jun 2024 from LDLC
    Number of reviews: 8 Average rating: 10

    Everything you need at the right price

    I wanted to have peace of mind knowing that this well-built power supply had all the connections I needed.
    to power the RTX 4070 SUPER and i5 12600 KF
    will allow me to power the next CPU / GPU upgrade without any worries.

    Model: be quiet! Straight Power 11 850W 80PLUS Gold
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  • by Thomas W
    Posted on 2 Jul 2024
    Bought on 9 Jan 2023 from LDLC
    Number of reviews: 6 Average rating: 10

    Nothing to say

    I took this power supply for my config 5900x and 4070ti 32go of ram 2 nvme with the cable bequiet 12VHPWR and nothing has to say extremely quiet! even by drawing 560 watt on it.

    Model: be quiet! Straight Power 11 750W 80PLUS Gold
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  • by Manuel P
    Posted on 27 Jun 2024
    Bought on 11 May 2024 from LDLC
    Number of reviews: 15 Average rating: 8

    good

    It's silent and offers a certain certified breadth, as well as a full range of connections for the long term.

    Model: be quiet! Straight Power 11 750W 80PLUS Gold
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  • by Sid Maz
    Posted on 7 May 2024
    Bought on 3 Feb 2024 from LDLC
    Number of reviews: 18 Average rating: 9

    Modular, silent and efficient power supply.

    Good power supply, very efficient and quiet, nothing to say about the quality of manufacture and assembly, perfect.

    Model: be quiet! Straight Power 11 750W 80PLUS Gold
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  • by NicolasG
    Posted on 27 Apr 2024
    Bought on 2 Aug 2022 from LDLC
    Number of reviews: 5 Average rating: 9

    POWEREEE

    Very happy with this purchase, the kit is well equipped and the power supply does its job very well with an appreciable silence :D

    Model: be quiet - Straight Power 11 1200W 80PLUS Platinum
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  • by Gnu0nly
    Posted on 7 Mar 2024
    Bought on 4 Feb 2024 from LDLC
    Number of reviews: 3 Average rating: 7

    CLEAR

    It's not human, because it does its job without the slightest noise. What's more, it's modular.

    Model: be quiet! Straight Power 11 750W 80PLUS Gold
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