Dark mode
only psusin all categories
only psus
United Kingdom
Catalog   /   Computing   /   Components   /   PSUs   /   be quiet!

be quiet! Straight Power 11 BN283

Photos - PSU be quiet! Straight Power 11 BN283
Videos 9Photos 6
from £97.16 up to £135.66 
add to listmy lists
be quiet! Straight Power 11 BN283
Straight Power (high efficiency)80+ Gold5 year warranty
450 W
24+8 (4+4) pin
550 W
24+8 (4+4) pin
650 W
24+8 (4+4) pin
750 W
24+8+8(4+4) pin
850 W
24+8+8(4+4) pin
1000 W
24+8+8(4+4) pin
Main
Power750 W
Form factorATX
Specs
PFCactive
Efficiency93 %
Cooling systemactive (fan)
Fan size135 mm
Fan bearinghydrodynamic
Certification80+ Gold
ATX12V version2.4
EPS12V version2.92
Power connectors
MB/CPU power supply24+8+8(4+4) pin
SATA11
MOLEX4
PCI-E 8pin (6+2)4
Cable systemmodular
Braided wires
Cable length
MB600 mm
CPU700 mm
SATA1000 mm
PCI-E600 mm
Max. power
+3.3V25 А
+5V25 А
+12V120 А
+12V220 А
+12V324 А
+12V424 А
-12V0.5 А
+5Vsb3 А
+12V750 W
+3.3V +5V150 W
General
Over voltage protection (OVP)
Over power protection (OPP)
Short circuit protection (SCP)
ProtectionOTP, OCP, SIP, UVP
Noise level21 dB
Manufacturer's warranty5 years
Dimensions (HxWxD)86x150x170 mm
Official Websitebequiet.com
Added to E-Catalogmay 2018
Certificate 80+ Gold. Element base with Japanese capacitors. Modular structure. Length of cables with a margin. Separate power stabilization system.

An exclusive Hi-End class power supply with a rated power of 750 W, which, by the way, is not the limit for this device — the OverLOAD option allows you to increase the peak load, without output voltage drop, up to 875 W! The PSU is certified according to the 80 PLUS GOLD standard, so this model can be trusted to power powerful and expensive components. The efficiency reaches 93%.

The model received 4 independent power lines (12 V), which makes it as reliable as possible. The Be quiet Straight Power 11 Straight Power 11 750W power supply utilizes a fully modular wire connection, allowing you to make the most of modern cable management solutions for advanced system units. One of the main features is the use of boards with a wireless connection of components — the absence of unnecessary wiring has a positive effect on cooling. The circuitry is built using Japanese-made capacitors, which are distinguished by excellent stability and reliability even when operating at a temperature of +105 ˚С. Active cooling is provided by a 135mm fan that is supported by a high quality fluid dynamic bearing. The operation of the fan will not disturb the silence and harmony.

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.
Catalog be quiet! 2025 - new arrivals, bestsellers, and the most relevant 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

Buy be quiet! Straight Power 11 BN283

When you make a purchase through links on our site, we may receive a affiliate commission.

be quiet BN283 Straight Power 11 750W ATX Black power supply unit - power supply units 750 W 100-240 820 W 50-60 Active 150

Virtually inaudible Silent Wings 3 135mm fan Funnel-shaped fan opening of the PSU case for high airflow intake Wire-free inside the PSU on the DC side for enhanced cooling and longevity Full cable management for maximum build flexibility 80PLUS Gold efficiency (up to 93%)
Amazon.co.uk
Delivery: to United Kingdom
Report
£131.81
Buy in shop

be quiet! Straight Power 11 power supply unit 750 W 20+4 pin ATX ATX Black BN283

World Class Quiet And Efficency Be Quiet! Straight Power 11 750W Raises The Bar For Systems That Demand Virtually Inaudible Operation Without Power Quality Compromises. Virtually Inaudible Silentwings®; 3 135Mm Fan Funnel-Shaped Fan Opening Of The Psu Case For High Airflow Intake Wire-Free Inside The Psu On The Dc Side For Enha... morenced Cooling And Longevity  Full Cable Management For Maximum Build Flexibility 80Plus® Gold Efficiency (Up To 93%) Powerful Multi-Gpu Support With Four Pci-Express Connectors Japanese 105°C-Rated Capacitors Ensure Stability And Reliability Erp And Energy Star 6.1 Ready 5-Year Manufacturer’S Warranty     Silent Wings® 3 Fan Provides Virtually Inaudible Operation The High-End Silentwings®; 3 Fan Delivers Best-Of-Class Airflow Yet Produces Very Little Noise. This Is Thanks To Its Unique Optimized Fan Blade Design Along With An Advanced Fluid-Dynamic Bearing And 6-Pole Fan Motor That Largely Eliminates Operational Noise Has A Super-Long Life And Minimal Power Consumption.       Funnel-Shaped Fan Opening Higher Cooling Performance The Fan Inlet Of The Straight Power 11 750W Is Funnel-Shaped. It Causes An Increased Throughput Of Air Which Benefits To A Higher Cooling Performance.         Wire-Free Design Inside The Psu   Pushing The Longevity Of Components To A Maximum An Absolute Innovation: The Straight Power 11 750W Is Wire-Free On The Dc Side Inside The Psu Body. This Results In Improved Cooling Airflow And Less Signal Disturbance Simply Because Of A Lack Of Wiring And Ultimately Pushes The Lifetimes Of The Components To A Maximum.       Fully Modular Cable Management Utmost Convenience And Compatibility Thanks To The Fully Modular Cable Management Cables That Serve No Purpose In The System Are Left Out. For This Reason Systems Always Appear Very Tidy. At The Same Time Installation Is Performed Much More Conveniently. A Smoother Airflow Results From The Uncluttered Layout Of The System Which Means Lower Noise And Temperatures Prevail Inside The Case.         80Plus® Gold Certified Impressively High Efficiency Straight Power 11 750W Is Certified With 80Plus® Gold Efficiency Reaching Up To 93%. This Gives Less Power Consumption And A Cooler And Quieter Operation. Truly A Benefit For Any System.     High-Class Technologies Compatibility For The Systems Of Tomorrow The Use Of Llc And Synchronous Rectifier (Sr) Provides Very Stable Operation And Enhanced Voltage Regulation.The Psu Is Equipped With Dc-To-Dc Conversion For Tight Voltage Regulation Even Under Heavy Cross-Loading Conditions. This Ensures Reliable Operation With The Next Generation Of Processors And Graphics Cards.       Japanese
Quzo.co.uk
Delivery: to United Kingdom
Report
£135.66
Buy in shop

be quiet! be quiet! Straight Power 11 power supply unit 750 W 20+4 pin ATX ATX Black BN283

Virtually inaudible operation thanks to a SilentWings® 3 135mm fan Big funnel-shaped fan opening of the PSU case for high airflow intake Wire-free on the DC side inside the PSU for enhanced cooling and longevity Full cable management for maximum build flexibility 80PLUS® Gold certification with an efficiency of up to 93% Advanced stability and volt... moreage regulation thanks to LLC, SR and DC-to-DC Four high-performance 12V-rails Powerful multi-GPU support with two PCI-Express connectors Japanese 105°C-rated capacitors ensure stability and reliability Power signal stability unmatched in its class ErP and Energy Star 6.1 ready Product conception, design and quality control in Germany World Class Quiet and Efficiencybe quiet! Straight Power 11 750W 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. Power Power protection features Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage Hold time 19.6 ms Efficiency 93% Max output current (+5Vsb) 3 A Max output current (-12V) 0.5 A Max output current (+5V) 25 A Max output current (+12V3) 24 A Max output current (+12V4) 24 A Max output current (+12V2) 20 A Max output current (+12V1) 20 A Max output current (+3.3V) 25 A Combined power (+5Vsb) 15 W Combined power (-12V) 6 W Combined power (+5V) 150 W Combined power (+12V) 750 W Combined power (+3.3V) 150 W Power Factor Correction (PFC) type Active Power factor 0.99 Input current 10 A AC input frequency 50 - 60 Hz AC input voltage 100 - 240 V Peak power 820 W Total power 750 W Ports & interfaces Cabling type Fully-Modular Floppy disk drive connector Yes CPU power cable length 70 cm CPU power connector (4+4 pin) Yes PCI Express power cable length 60 cm PCI Express power connectors (6+2 pin) 4 SATA power cable length 550 mm Number of PATA power connectors 4 Number of SATA power connectors 11 Motherboard power cable length 60 cm Motherboard power connector 20+4 pin ATX Performance Bearing technology FDB Silent mode Yes EPS version 2.92 ATX version 2.4 80 PLUS certification 80 PLUS Gold Power supply unit (PSU) form factor ATX Purpose PC Design On/off switch Yes Illumination No Number of fans 1 fan(s) Fan diameter 13.5 cm Product colour Black Certificates Certification CE, FCC, TÜV, cTUVus, RCM, BSMI, CU Compliance certificates RoHS Weight & dimensions Weight 1.78 kg Height 86 mm Depth 170 mm Width 150 mm Packaging data Package weight 3.34 kg Package height 102 mm Package depth 328 mm Package width 248 mm Manual Yes Technical details Sustainability certificates ENERGY STAR Logistics data Harmonized System (HS) code 84733020 Other features Cable management Yes Noise level (full-load mode, 100%) 21.23 dB Noise level (quiet mode, 50%) 9.01 dB Noise level (silent mode, 8.4 dB Cable ties included Yes Screws included Yes manual pdf leaflet Straight Power 11
Backtotheoffice.co.uk
Delivery: in United Kingdom
Report
£123.99
Buy in shop

be quiet! Straight Power 11 750W Modular 80 Plus Gold Power Supply - BN283 BN283

be quiet! Straight Power 11 750W;raises the bar for systems that demand virtually inaudible operation without power quality compromises.
Awd-it.co.uk
Delivery: to United Kingdom
Report
£97.16
Buy in shop
Series be quiet! Straight Power (high efficiency)Compare using chart →
be quiet! Straight Power 12 BN338
from £167.99 
1000 W, 24+8+8(4+4) pin, 4 х 6+2 pin, 1 x 16 pin, SATA 9, Molex 2, ATX, modular, Efficiency 93 %, certificate 80+ Platinum, warranty 10 years
be quiet! Straight Power 12 BN337
from £147.99 
850 W, 24+8+8(4+4) pin, 4 х 6+2 pin, 1 x 16 pin, SATA 9, Molex 2, ATX, modular, Efficiency 93 %, certificate 80+ Platinum, warranty 10 years
be quiet! Straight Power 12 BN339
from £169.99 
1200 W, 24+8+8(4+4) pin, 4 х 6+2 pin, 2 x 16 pin, SATA 9, Molex 2, ATX, modular, Efficiency 93 %, certificate 80+ Platinum, warranty 10 years
be quiet! Straight Power 12 BN336
from £121.43 
750 W, 24+8+8(4+4) pin, 4 х 6+2 pin, 1 x 16 pin, SATA 9, Molex 2, ATX, modular, Efficiency 93 %, certificate 80+ Platinum, warranty 10 years
be quiet! Straight Power 11 BN283
from £97.16 
750 W, 24+8+8(4+4) pin, 4 х 6+2 pin, SATA 11, Molex 4, ATX, modular, Efficiency 93 %, certificate 80+ Gold, warranty 5 years
be quiet! Straight Power 12 BN340
from £208.99 
1500 W, 24+8+8(4+4) pin, 4 х 6+2 pin, 2 x 16 pin, SATA 9, Molex 2, ATX, modular, Efficiency 93 %, certificate 80+ Platinum, warranty 10 years
be quiet! Straight Power 11 BN284
from £143.03 
850 W, 24+8+8(4+4) pin, 4 х 6+2 pin, SATA 11, Molex 4, ATX, modular, Efficiency 93 %, certificate 80+ Gold, warranty 5 years
be quiet! Straight Power 11 BN285
from £148.99 
1000 W, 24+8+8(4+4) pin, 6 х 6+2 pin, SATA 11, Molex 4, ATX, modular, Efficiency 93 %, mining, certificate 80+ Gold, warranty 5 years
be quiet! Straight Power 11 BN282
from £109.18 
650 W, 24+8 (4+4) pin, 4 х 6+2 pin, SATA 9, Molex 3, ATX, modular, Efficiency 93 %, certificate 80+ Gold, warranty 5 years
be quiet! Straight Power 11 Platinum BN308
from £184.64 
850 W, 24+8+8(4+4) pin, 4 х 6+2 pin, SATA 11, Molex 4, ATX, modular, Efficiency 94 %, certificate 80+ Platinum, warranty 5 years
be quiet! Straight Power 11 BN280
from £91.60 
450 W, 24+8 (4+4) pin, 2 х 6+2 pin, SATA 8, Molex 3, ATX, modular, Efficiency 93 %, certificate 80+ Gold, warranty 5 years
be quiet! Straight Power 11 BN281
from £95.36 
550 W, 24+8 (4+4) pin, 2 х 6+2 pin, SATA 9, Molex 3, ATX, modular, Efficiency 93 %, certificate 80+ Gold, warranty 5 years
be quiet! Straight Power 11 Platinum BN305
from £112.96 
500 W, 24+8 (4+4) pin, 2 х 6+2 pin, SATA 9, Molex 3, ATX, modular, Efficiency 94 %, certificate 80+ Platinum, warranty 5 years
be quiet! Straight Power 11 Platinum BN306
from £134.47 
650 W, 24+8+8(4+4) pin, 4 х 6+2 pin, SATA 9, Molex 3, ATX, modular, Efficiency 94 %, certificate 80+ Platinum, warranty 5 years
be quiet! Straight Power 10 BN231
from £131.58 
500 W, 24+8 (4+4) pin, 2 х 6+2 pin, SATA 9, Molex 3, ATX, Efficiency 93 %, certificate 80+ Gold, warranty 5 years

be quiet! Straight Power 11 configurations

Price for be quiet! Straight Power 11
be quiet! Straight Power 11 BN280from £91.603 offers
be quiet! Straight Power 11 BN281from £95.362 offers
be quiet! Straight Power 11 BN282from £109.182 offers
be quiet! Straight Power 11 BN283from £97.165 offers
be quiet! Straight Power 11 BN284from £143.032 offers
be quiet! Straight Power 11 BN285from £148.994 offers
Video reviews
Best Quiet Power Supply | be quiet! Straight Power 11 Platinum 1200W Unboxing
12 July 2023915 view
Cable Management inside bequiet! Straight Power 11 1000Watt Power supply
13 June 2018200 view
Be Quiet Straight Power 11 850w PSU Unboxing
31 December 20221 946 view
Unboxing & overview of the bequiet! Straight Power 11 1000Watt Power Supply
8 June 2018604 view
Be Quiet! Straight Power 11 550W PSU *REAL* Unboxing in English
24 May 2020764 view
Straight Power 11 Platinum | be quiet | multi-language
21 January 20207 885 view
BeQuiet Straight Power 11 PSU - Overview
4 May 20186 741 view
ASMR Unboxing - be quiet! Straight Power 11 650W (Silent)
31 January 2020214 view
Be Quiet Straight Power 11 Unboxing and Install
31 August 202050 063 view

Can you be quieter?

By creating the Be quiet brand, the German company Listan GmbH decided to occupy an interesting niche of elite and almost silent power supplies. With a combination of premium circuitry and acoustic comfort, their products are equally in demand among gamers-enthusiasts and pros working with audio and video content. So the Straight Power 11 model became a hit for a reason, because it is one of the quietest computer power supplies with an 80+ Gold certificate and a power reserve of 750 watts. Its proprietary 14 cm Silent Wings 3 fan with hydrodynamic bearing barely emits 9 dB of noise that is indistinguishable to the ear at idle, and at peak load it starts to barely noticeably rustle (less than 21 dB).

Japanese capacitors and maximum protection

The advantages of this model also include high stability of output voltages, the presence of all types of protection and a completely changed circuitry compared to Straight Power 10. If earlier Taiwanese capacitors were used, then this time we see durable Japanese Nippon and Rubycon capacitors. An interesting feature was the division of the main 12-volt line into four sub-lines: the first feeds the motherboard and peripherals (disks, fans), the second processor, the third and fourth — video cards. On the one hand, this made it possible to achieve better voltage stabilization, on the other hand, it will not allow installing a couple of very “gluttonous” video cards into the system.

This is Love

On other fronts, Straight Power 11 also claims a medal and declarations of love: it has a fully modular structure, all cables are braided and with such a margin of length that it is enough for any case, there are four 6 + 2-pin connectors for video cards and a whole pack SATA and Molex connectors for connecting any peripherals. Well, the five-year warranty sets in a positive way. Of course, the price for this stuff will be higher than for 750-watt models from the conditional Chieftec, but it seems to us that talking about overpayment is not appropriate here. Still, this is a slightly different level, and the quality of Straight Power 11 speaks for itself.

We recommendCompare using chart →
Cooler Master MWE Gold V2 ATX 3.1 MPE-7501-AFAAG-3E
from £86.49 
750 W, 24+8+8(4+4) pin, 4 х 6+2 pin, 1 x 16 pin, SATA 12, Molex 4, ATX, modular, Efficiency 90 %, certificate 80+ Gold, warranty 5 years
Cooler Master V SFX Gold MPY-7501-SFHAGV
from £62.99 
750 W, 24+8+8(4+4) pin, 4 х 6+2 pin, SATA 8, Molex 4, SFX, modular, Efficiency 90 %, certificate 80+ Gold, warranty 10 years
Corsair RMx Series New CP-9020199-EU
from £92.59 
750 W, 24+8+8(4+4) pin, 4 х 6+2 pin, SATA 10, Molex 4, ATX, modular, Efficiency 90 %, semi-passive СО, certificate 80+ Gold, warranty 10 years
Gigabyte Aorus Elite GP-AE850PM PG5
from £118.63 
850 W, 24+8+8(4+4) pin, 6 х 6+2 pin, 1 x 16 pin, SATA 8, Molex 4, ATX, modular, Efficiency 92 %, semi-passive СО, mining, certificate 80+ Platinum, warranty 10 years
Cooler Master V Gold V2 MPY-850V-AFBAG
from £123.49 
850 W, 24+8+8(4+4) pin, 6 х 6+2 pin, SATA 12, Molex 4, ATX, modular, Efficiency 90 %, semi-passive СО, mining, certificate 80+ Gold, warranty 10 years
Seasonic FOCUS GX ATX 3.0 GX-750 3.0
from £116.99 
750 W, 24+8+8(4+4) pin, 2 х 6+2 pin, 1 x 16 pin, SATA 10, Molex 3, ATX, modular, Efficiency 90 %, semi-passive СО, certificate 80+ Gold, warranty 10 years
SilverStone Decathlon DA850R-GMA-WWW
from £105.47 
850 W, 24+8+8(4+4) pin, 4 х 6+2 pin, 1 x 16 pin, SATA 8, Molex 4, ATX, modular, Efficiency 87 %, semi-passive СО, certificate 80+ Gold
MSI MAG GL PCIE5 A850GL
from £95.99 
850 W, 24+8+8(4+4) pin, 4 х 6+2 pin, 1 x 16 pin, SATA 8, Molex 4, ATX, modular, Efficiency 90 %, certificate 80+ Gold, warranty 10 years
Gigabyte Aorus GM GP-AP750GM
from £119.97 
750 W, 24+8+8(4+4) pin, 4 х 6+2 pin, SATA 6, Molex 5, ATX, modular, Efficiency 90 %, semi-passive СО, certificate 80+ Gold, warranty 10 years
Seasonic Connect SSR-750FA
from £127.85 
750 W, 24+8+8(4+4) pin, 4 х 6+2 pin, SATA 8, Molex 5, ATX, modular, Efficiency 90 %, certificate 80+ Gold, warranty 10 years
Thermaltake Toughpower GF3 GF3 750W
from £109.99 
750 W, 24+8+8(4+4) pin, 4 х 6+2 pin, 1 x 16 pin, SATA 12, Molex 4, ATX, modular, Efficiency 90 %, semi-passive СО, certificate 80+ Gold, warranty 10 years
Cooler Master MWE Gold V2 FM MPE-8501-AFAAG
from £89.99 
850 W, 24+8+8(4+4) pin, 4 х 6+2 pin, SATA 12, Molex 4, ATX, modular, Efficiency 90 %, certificate 80+ Gold, warranty 5 years
Filters
Models
be quiet! Straight Power 11 often compared
Super Flower Leadex II Gold
be quiet! Straight Power 11
[BN283]
vs
Super Flower Leadex II Gold
[SF-750F14EG]
Corsair TX-M Series
be quiet! Straight Power 11
[BN283]
vs
Corsair TX-M Series
[TX750M]
Seasonic FOCUS GX
be quiet! Straight Power 11
[BN283]
vs
Seasonic FOCUS GX
[FOCUS GX-750]
Seasonic X-series
be quiet! Straight Power 11
[BN283]
vs
Seasonic X-series
[SS-750KM3]
be quiet! Dark Power Pro 11
be quiet! Straight Power 11
[BN283]
vs
be quiet! Dark Power Pro 11
[BN252]
Corsair RMx Series
be quiet! Straight Power 11
[BN283]
vs
Corsair RMx Series
[CP-9020179-EU]
Thermaltake Smart DPS G
be quiet! Straight Power 11
[BN283]
vs
Thermaltake Smart DPS G
[DPS G 750W]
Gigabyte Value Modular
be quiet! Straight Power 11
[BN283]
vs
Gigabyte Value Modular
[G750H]
be quiet! Pure Power 11 CM
be quiet! Straight Power 11
[BN283]
vs
be quiet! Pure Power 11 CM
[BN298]
be quiet! Straight Power 11 Platinum
be quiet! Straight Power 11
[BN283]
vs
be quiet! Straight Power 11 Platinum
[BN307]
MSI MPG GF
be quiet! Straight Power 11
[BN283]
vs
MSI MPG GF
[A750GF]
be quiet! Pure Power 12 M
be quiet! Straight Power 11
[BN283]
vs
be quiet! Pure Power 12 M
[BN343]
Catalog
  /  
PSUs
  /  
be quiet!
  /  
PSU be quiet! BN283
E-Catalog — catalog of descriptions and prices for household and computer equipment, electronics, goods for home and office. We know where to find buy psus be quiet! BN283 at the best price in online stores. Reprinting of any materials is only permitted with the written consent of the editorial office.
About us
Other countries
Did you find an error on this page? Highlight it and click Ctrl+Enter.
Or use the "Report an error in the description" feature under the table with the specifications of the specific model.
Your Region
  • United Kingdom, en
  • United Kingdom
ID
© E-Catalog, 2001—2025
Dark mode