Refresh the page

Be quiet! PURE POWER 11 300W

We are sorry, but this sale is over
Show alternatives
Manufacturer website

Don't like the alternatives?

Choose from the full offer

Be quiet! PURE POWER 11 300W

No computer, workstation, or server can operate without a good PSU. When building a new PC, make sure to take your time when choosing this particular component as well. Aside from supplying the electricity to the computer, it also affects the service life of other components and the overall power consumption. The Be quiet! PURE POWER 11 300W ensures reliable conduction of electricity from the mains to singular circuits, which power the needed components. The ATX power source with a 300 W performance is ideal for low-end and budget PCs. The PSU features a 120mm fan, which reduces the temperature and extends its lifespan. Those who want a quiet PC will be thrilled by its noise level of mere 13,2 dB. You can cut the power supply using a switch. Every PC power supply unit has a special label that tells you how effective it is at using the power from the mains. The 80 PLUS Bronze certification indicates its efficiency reaches 87 %.

Be quiet! PURE POWER 11 300W PSU Key Features

  • Active Power Factor Correction (PFC)
  • ATX format is one of the most popular formats at present
  • The PSU is 80 PLUS Bronze certified, which ensures a 87 % efficiency
  • The 120mm fan keeps the noise level under 13,2 dB
  • Thermal speed control safeguards the PSU from harmful temperature spikes
  • The PSU features a 1 × PCI Express connector for powering high-end graphics cards
  • It also includes a 4 × serial ATA connector that lets you connect a hard drive, SSD, or a DVD drive
  • Power supply unit protection type: undervoltage protection (UVP), overcurrent protection (OCP), over-power protection (OPP) , short-circuit protection (SCP) and over-temperature protection (OTP)


UK Localisation Message

Performance and format

Performance 300 W
Format ATX
ATX version 2.4


Features and functions Active PFC, Thermal speed control, Power switch
Type of protection Undervoltage protection (UVP), Overcurrent protection (OCP), Over-power protection (OPP) , Short-circuit protection (SCP), Over-temperature protection (OTP)


Certification 80 PLUS Bronze
Performance 87 %


Connectors ATX 24 pin, CPU 8pin / 4+4pin, Floppy 4pin, Molex 4pin, PCI-E 8pin / 6+2pin, SATA 15pin
Number of PCI express 8-pin
Number of serial ATA 15-pin
Number of molex HDD 4-pin
Number of molex FDD 4-pin

Cooling system

Fan size 120 mm
Maximum loudness 13.2 dB


Width 150 mm (15 cm)
Height 150 mm (15 cm)
Depth 86 mm (8.6 cm)
Weight 1.76 kg (1,760 g)
Code:  BN290
Warranty: 60 months
Product Number:  BN290
Links: Manufacturer's Website: