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be quiet! Straight Power 11 850W Modular 80 Plus Gold Power Supply - BN284
be quiet! Straight Power 11 850W raises the bar for systems that demand virtually inaudible operation without power quality compromises.
Features


General
SKU | B54-7CF-BE5 |
Features
Brand | Be Quiet |
Model Number | BN284 |
Wattage | 850W |
Efficiency Rating | 80 PLUS Gold |
Modular? | Fully Modular |
PSU Form Factor | ATX |
Colour | Black |
Description
be quiet! Straight Power 11 850W Modular 80 Plus Gold Power Supply - BN284
be quiet! Straight Power 11 850W 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
- Modular cables for maximum build flexibility
- 80 PLUS® Gold efficiency (up to 93%)
- 4 PCIe connectors for overclocked high-end GPUs
- Japanese 105°C-rated capacitors ensure stability and reliability
- ErP and Energy Star 6.1 ready
- 5-year manufacturer’s warranty
Provides virtually inaudible operation
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.
Higher cooling performance
The fan inlet of the Straight Power 11 850W is funnel-shaped. It causes an increased throughput of air which benefits to a higher cooling performance.
Pushing the longevity of components to a maximum
An absolute innovation: The Straight Power 11 850W 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.
Utmost convenience and compatibility
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.
Impressively high efficiency
Straight Power 11 850W 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.
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.
A testament to high quality
Only the best components are used in Straight Power 11 850W. 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.
Specification
General Data
Model: Straight Power 11 850W
Continuous power (W): 850
Peak power (W): 920
Form factor: Version 2.4
Form factor EPS 12V: Version 2.92
Topology: LLC + SR + DC/DC
Digitally controlled: -
Voltage (Vac): 100 - 240
Frequency (Hz): 50 - 60
Input current (A): 10 / 5
Power factor at 100% load: >0.99
Modern standby: -
Power consumption in standby (W): <0.12
Average life time (h / 25°C): 100,000
Operating temperature up to (°C): 40
Efficiency
80 PLUS certification: Gold
Efficiency (%) at 230V, 2% load: -
Efficiency (%) at 230V, 10% load: 89.5
Efficiency (%) at 230V, 20% load: 92.5
Efficiency (%) at 230V, 50% load: 93.4
Efficiency (%) at 230V, 100% load: 91.2
Fan and Cooling Technology
Fan: Silent Wings 3
Fan size (mm): 135
Bearing technology: FDB
Motor technology: 6-pole fan motor
Max. fan speed (rpm): 2100
dB(A) at 10% load: 9.6
dB(A) at 20% load: 9.7
dB(A) at 50% load: 10.6
dB(A) at 100% load: 25
Output
Multi-rail operation (12V rails): 4
12V single rail operation: -
Overclocking key: -
+3.3V (A): 25
+5V (A): 25
+12V1 (A): 21
+12V2 (A): 21
+12V3 (A): 26
+12V4 (A): 26
+12V5 (A): -
+12V6 (A): -
-12V (A): 0.5
+5Vsb (A): 3
Max. combined power 12V (W): 849.6
Max. combined power 12VHPWR (W): 0
Max. combined power 3.3V + 5V (W): 150
Hold-up time at 100% load (ms): 21
Power good signal (ms): 100 - 500
Cables and Connectors
Modular cables: ✓
Sleeved cables: all
Flat cables: -
Maximum cable length (cm): 115
Cable length to motherboard (cm): 60
No. of cables: 11
ATX-Motherboard (20+4-pin): 1
P4+4 (CPU): 1
P8 (CPU): 1
P4 (CPU): -
12VHPWR cables: 0
PCI-e 6+2-pin (GPU): 4
PCI-e 6-pin (GPU): -
SATA: 11
PATA: 4
FDD (Floppy): 1