be quiet!
Straight Power 11 650W 80 Plus Gold Modular Power Supply

  • be quiet! Straight Power 11 650W 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.

10+ In stock

£114.95 *
pay with credit card pay with amazon payments pay with bitcoin Pay by Finance with Hitachi Personal Finance

Stock Code: CA-128-BQ

EAN: 4260052185773

MPN: BN282

Manufacturer: be quiet!

tech communitySupported by the biggest tech community
Direct Service Hotline
+44 (0)1782 44 44 55
What our customers say about us
4.8 Google Customer Reviews
Product information:

Straight Power 11 650W 80 Plus Gold Modular Power Supply

The power supply and fan specialists at Be Quiet! have managed a small stroke of genius. Finally, with the latest Extension Stage 11 of the Straight Power Series, a power supply unit has been presented that is more than just a new revision with minor improvements in detail. Be Quiet! has again launched a product on the market that has been significantly enhanced in terms of efficiency, layout and connectivity - and that once again runs whisper-quiet.

The Features of the Straight Power 11 650W at a Glance:

  • Fully modular cable management
  • New half-bridges with LLC resonance transducers for higher performance
  • Higher efficiency thanks to 105-degree Celsius electrolytic capacitors and solid capacitors
  • 50 Watts more performance
  • Ultraleiser 135 mm SilentWings 3 Lüfter
  • 80 Plus Gold zertifiziert

Superb Power Supply with Incredible Efficiency

The Straight Power series stands as always for high quality. They represent the broad middle-class of Be Quiet's! range and are available in a range of performance levels as will as with and without cable management. This means there is the right model for almost any challenge. All of them use a common PSU casing that comes with an impressive anthracite look and unusual fan grids that make it very visually appealing.

All performance versions of the Straight Power 11 are equipped with 135 mm fans from the Silent Wings 3 range, and these additionally come with an advanced frame design. De-coupling and lower fan speeds together move plenty of hair while ensuring the Straight Power 11 series functions at even lower noise levels than its predecessors. This model produces a maximum 17,5 dB(A) which for the average ear is virtually inaudible once installed.

Increased Performance Thanks to Premium Components

When it comes to efficiency the Straight Power 11 series leaves no stone unturned and comes with 80 Plus Gold certification. These means the power supply is up to 93 percent effective (!) - something which not many manufacturers achieve, at least not in the mid-range segment. Stand-by power usage has been decreased once again and amounts to around 0,12 Watts. Not only are the Straight Power PSUs fantastic in performance terms, but also in terms of their impact on the environment.

The great specs on offer with the Straight Power 11, along with many other positives, are thanks in no small part to the use of Japanese 105-degree Celsius electrolytic capacitors and solid capacitors. Additionally, new half-bridges with LLC resonance transducers are used. The fully modular cable management provides improved airflow for the power supply and, as a result, an increased lifespan. These improvements allowed Be Quiet! to increase performance by 50 Watts and even offer this version with a full 650 Watts.

With 650 Watts this represents one of the top models in the series. Correspondingly it comes with four independent 12 Volt rails which combine to offer 54,1 Amps and 649,2 Watts. This is supplied to the motherboard by means of a 20+4-pin ATX connector and a 4+4-pin EPS. The graphics cards can be supplied power via four 6+2-pin PCIe connectors and nine SATA- as well as three Molex connectors for powering peripherals.


  • Dimensions: 150 x 86 x 160 mm (W x H x D)
  • Fans: 135 mm (automatically controlled Silent Wings, 8,9 - 17,5 dB(A))
  • Efficiency: max. 93 % (50 % load), incl. 80 Plus Gold Certification
  • Active PFC
  • Form Factor: ATX12V 2.4 / EPS12V 2.92
  • Performance: 650 W
    +3,3V: 24 A
    +5V: 24 A
    +12V1: 18 A
    +12V2: 18 A
    +12V3: 22 A
    +12V4: 22 A
    +12V (total): 649,2 W / 54,1 A
    -12V: 3,6 W/ 0,3 A
    +5Vsb: 15 W/ 3 A
  • Connectors:
    1x 20+4-Pin (ATX12V)
    1x 4+4-Pin (ATX12V / EPS12V)
    4x 6+2-Pin PCIe
    9x SATA
    3x 4-Pin Molex
  • Cable Length: 55 - 70 cm
  • Life Expectancy: 100.000 h
  • Manufacturer's Guarantee: 5 Years

Be Quiet PSU Calculator


More links for "Straight Power 11 650W 80 Plus Gold Modular Power Supply"


Customer review

100% (1)
0% (0)
0% (0)
0% (0)
0% (0)

Lives up to Its Name

I was kindly sent this power supply to review a few weeks back, which was great timing as i'd recently been experiencing intermittent issues with my existing PSU, a ModXStream 600w power supply. The first thing that was evident was the build excellent packaging, and sheer number of cables that were provided in the box. All nice and neatly wrapped up, each individually braided. The other positive for me was the fact that it's fully modular. Even the power cables to the motherboard.
The finish on the PSU, braiding of the cables, as well as the PSU itself portrays quality even before it's installed.
Once installed i wasn't even sure that my computer was powering up, the PSU was so quiet! Luckily it was, and it's just that he PSU lives up to its name in that regard! So far, so good! No performance issues with the power supply itself, the product seems to delivery quality, and as an added bonus it's very quiet. It's certainly opened my eyes up to be quiet! as a brand.

Jack 2018-07-13

Write a review

Reviews will be active after verification

* Required field

 Recently Viewed
    Stock level indicator

    Pre Order

    Place an order before stock is available and book your place in the queue. You will be charged at the time of ordering.

    Bought to order

    Items that are bought by us when a purchase is made, this generally is for highly expensive items, items with a very slow run rate or speciality items

    In stock

    The item is in stock.

    Due today

    The item is out of stock and expected to arrive today.

    ETA: XX.XX

    The item is out of stock and estimated to arrive on the date provided.

    Built To Order

    The Item is built to order. As you change the options, the stock status will automatically update depending on your selection.

    Out of stock

    The item is out of stock and estimated delivery date is not known at this time.