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be quiet! Straight Power 11 BN285

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be quiet! Straight Power 11 BN285
Straight Power (high efficiency)mining80+ 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
Power1000 W
Form factorATX
Specs
PFCactive
Efficiency93 %
Cooling systemactive (fan)
Fan size135 mm
Fan bearinghydrodynamic
Certification80+ Gold
Cybenetics EfficiencyGold
Cybenetics NoiseStandard ++
ATX12V version2.4
EPS12V version2.92
Power connectors
MB/CPU power supply24+8+8(4+4) pin
SATA11
MOLEX4
PCI-E 8pin (6+2)6
Cable systemmodular
Braided wires
Cable length
MB600 mm
CPU700 mm
SATA1000 mm
PCI-E600 mm
Max. power
+3.3V25 А
+5V25 А
+12V122 А
+12V222 А
+12V330 А
+12V430 А
-12V0.5 А
+5Vsb3 А
+12V999 W
+3.3V +5V150 W
General
Over voltage protection (OVP)
Over power protection (OPP)
Short circuit protection (SCP)
ProtectionOTP, OCP, SIP, UVP
Noise level32 dB
Manufacturer's warranty5 years
Dimensions (HxWxD)86x150x170 mm
Official Websitebequiet.com
Added to E-CatalogMay 2018
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!.
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be quiet! Straight Power 11 1000W Fully Modular 80+ Gold Rated Power Supply - BN285 BN285

be quiet! Straight Power 11;1000W;raises the bar for systems that demand virtually inaudible operation without power quality compromises.
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£157.10
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be quiet! Straight Power 11 power supply unit 1000 W 20+4 pin ATX ATX Black BN285

World Class Quiet and EfficiencyN/Abe quiet! Straight Power 11 1000W 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.N/AN/ASILENT WINGS 3 FANN/AProvides virtually inaudible operationN/AThe high-end Silent Wings 3 fan delivers best-of... more-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.N/AN/AFUNNEL-SHAPED FAN OPENINGN/AHigher cooling performanceN/AThe fan inlet of the Straight Power 11 1000W is funnel-shaped. It causes an increased throughput of air which benefits to a higher cooling performance.N/AN/AWIRE-FREE DESIGN INSIDE THE PSUN/APushing the longevity of components to a maximumN/AAn absolute innovation: The Straight Power 11 1000W 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.N/AN/AMODULAR CABLESN/AUtmost convenience and compatibilityN/AThanks to the modular cables all 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.N/AN/A80 PLUS GOLD CERTIFIEDN/AImpressively high efficiencyN/AStraight Power 11 1000W is certified with 80 PLUS Gold efficiency reaching up to 93%. This gives less power consumption and a cooler and quieter operation. Truly a benefit for any system.N/AN/AHIGH-CLASS TECHNOLOGIESN/ACompatibility for the systems of tomorrowN/AThe 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.N/AN/AJAPANESE 105 CAPACITORSN/AA testament to high qualityN/AOnly the best components are used in Straight Power 11 1000W. That is why we have built only high-quality Japanese capacitors into the PSU chassis. They are rated to 105C ensuring stability reliability and a long operating life.N/AN/A
Quzo.co.uk
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Be Quiet BN285

EU Plug.Be quiet Straight Power 11 1000W raises the bar for systems that demand virtually inaudible operation without power quality compromises.Features:- 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.- Mod... moreular cables for maximum build flexibility.- 80 PLUS® Gold efficiency (up to 93%).- Six PCIe connectors for overclocked high-end GPUs.- Japanese 105°C-rated capacitors ensure stability and reliability.- ErP and Energy Star 6.1 ready Silent wings 3 fan The high-end Silent Wings 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 The fan inlet of the Straight Power 11 1000W is funnel-shaped.It causes an increased throughput of air which benefits to a higher cooling performance.Wire-free design inside the psu An absolute innovation:The Straight Power 11 1000W 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.Modular cables Thanks to the modular cables, all 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.80 Plus® gold certified Straight Power 11 1000W is certified with 80 PLUS 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 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 105° capacitors Only the best components are used in Straight Power 11 1000W.That is why we have built only high-quality Japanese capacitors into the PSU chassis.They are rated to 105°C, ensuring stability, reliability and a long operating life.Specifications:General data:- Model:Straight Power 11 1000W.- Continuous power (W):1000.- Peak power (W):1070.- Form factor:Version 2.4.- Form factor EPS 12V:Version 2.92.- Modular Cable management:Yes.- Topology:LLC + SR + DC/DC.- Wire-free design (DC-side):Yes.- Voltage (Vac):100.- 240.- Frequency (Hz):50.- 60.- Input current (A):13 / 6.5.- PFC:active.- Power factor at 100% load:>0.99.- Compliant to Intel C6/C7:Yes.- Power consumption in
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Series be quiet! Straight Power (high efficiency)Compare using chart →
be quiet! Straight Power 12 BN339
from £197.14 
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 BN337
from £149.99 
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 BN338
from £169.99 
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 BN336
from £118.58 
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 BN284
from £147.99 
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 BN282
from £118.99 
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 BN283
from £129.99 
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 11 BN285
from £157.10 
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 Platinum BN305
from £118.99 
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 £137.99 
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 11 Platinum BN308
from £203.99 
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 12 BN340
from £212.99 
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 10 BN231
from £108.82 
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 BN280
from £97.99 
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 £101.99 
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
Model overview based on user reviews  
The "be quiet! Straight Power 11" power supply unit is highly praised for its exceptional silence and quality build. Users appreciate its fully modular design and long cables, allowing for flexible and tidy installations. Despite some minor issues like stiff wires and unclear instructions, the PSU is considered reliable, with stable voltage lines under load. However, there are isolated reports of defective units and unexpected shutdowns, though these were swiftly addressed by the service center with replacements. Overall, the PSU is valued for its quiet operation and durability, making it a recommended choice for those seeking a high-quality power supply.
Pros

Cons

User reviews 5
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Ask to check (or check immediately) the power supplies in the store!
15 May 2020 
Bought this power supply hoping for quiet operation. Upon connection, a squeal appeared. Got a defective unit, was very surprised and upset by this. The next day, took it back to the store.
- Truly quiet operation
- Modular
- Long cables
- Stiff wires
- Loud sound of the switch when turning the computer on or off.
Viktor: use be quiet! BN282 less than month
Comments 1
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So far, it costs its 3500 UAH. We will see further.
3 March 2020 
Ordered on F.ua. 750 watts[283].
Everything is fine, it came new in sealed packaging via NP.
Quiet, the relay click is inaudible in the room (it is very quiet on its own). Haven't given it a proper load yet, don't have the means, it's in a PC with a load up to 350 watts. The 12V, 5V, and 3V lines do not sag, the values are stable with a margin.
I'll add a comment later after installing in a new computer.
Quality, modularity+-, it weighs normally :)),
Completeness+-, length and number of cables. Power around 700 watts. I was ready to pay this money for it, the most important part in a PC.
The instructions are not clear. All the sockets are marked in their own way, but there is no clear information on them in the instructions, I had to google ... in fact, nothing complicated. Why the metal braid is unclear, tight.
K10: use be quiet! BN283 less than month
Comments 5
Discuss
 Show Original
I recommend for purchase
30 July 2019 
I bought a Gigabyte G750H to replace it for my assembly and went nuts from the level of silence that this power supply shows. Well done Germans, they did everything very high quality inside and out. Long connection wires allowed me to lay cables in a way that the previous PSU did not work out.
Long-awaited silence, long cables, fully modular
-
Alex Chugaev: use be quiet! BN283 less than month
Comments 3
Discuss
 Show Original
3 out of 5 user review(s) shown
2 more user review(s)

be quiet! Straight Power 11 configurations

Price for be quiet! Straight Power 11
be quiet! Straight Power 11 BN280from £97.996 offers
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be quiet! Straight Power 11 BN285from £157.103 offers
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