Article number: BN226



Compact and Silent Energy

SFX Power 2 300W is the be quiet! advanced high-power compact PSU that gives you more for your mini or media PC. It is the perfect upgrade for any PC chassis requiring an SFX form factor PSU. Its efficient design supports Energy Star 5.2 requirements, ErP 2014, and 80PLUS® Bronze efficiency (up to 85%), while providing solid voltages and enough power to support a PCIe graphics card (6+2pin connector included).

For compact PC systems that perform beyond the ordinary, with an ideal combination of features, power, efficiency and be quiet! reliability, choose SFX Power 2 300W .

Product not available in your country.
  • Strong dual 12V-rail design supports high stability and a PCIe connector for peripherals that need more power, like a PCIe graphics card
  • 300 watts of continuous power to ensure steady operation even when your PC meets an unexpectedly heavy load
  • 80PLUS Bronze certification and up to 89% power conversion efficiency let you use the provided energy more efficiently and reduces your power bills
  • Product conception, design and quality control in Germany


Energy Efficiency

  • 80PLUS Bronze certification independently verifies the high operating-efficiency (up to 89%) of this design
  • Higher efficiency means cost savings, because your PC draws less power from the mains. It also means less wasted heat, less cooling required, and an overall quieter operation
  • Standby drain of less than 0.25 watts
  • Meets Energy Star 6.0 guidelines
  • Fulfills ErP 2014 guidelines
  • Zero Load design and support of Intel’s Deep Power Down C6/C7 mode



  • Use of the latest technology ensures premium performance and reliability
  • Supports the latest Intel® and AMD™ CPUs
  • Dual independent 12V-rails improve power signal stability
  • Full suite of top safety protections defends against over-currents, over- and under-voltages, short circuits, and overloads, thus safeguarding your valuable components
  • Low-Noise Operation
  • An automatically temperature-regulated 80 mm high-quality fan
  • Assured balance between cooling performance and quiet operation


Highly Compatible and Convenient

  • Sleeved cable lengths up to 50cm allow for improved cooling and are perfect for mini PC cases
  • System features 9 connectors for flexible system builds
  • Connectors are compatible with older components as well as those still on the drawing board
  • PCIe connector supports discrete graphics card
  • Clearly labeled plugs enable simple installation


Product Conception, Design and Quality Control in Germany

  • 2- year warranty
  • Quick support is available via our international hotline, Mondays to Fridays from 9:00 am to 5:30 pm German local time: +49 (0) 40-736 76 86 - 98


All models at a glance:


General data

Model SFX Power 2 300W
Continuous power (W) 300
Peak power (W) 350
Form factor ATX 12V SFX 12V Version 3.3
Form factor EPS 12V -
Modular cable management -
Topology -
Wire-free design (DC-side) -
Voltage (Vac) 100 - 240
Frequency (Hz) 50 - 60
Input current (A) 4.5 / 2.5
PFC active
Power factor at 100% load >0.97
Compliant to Intel C6/C7
Power consumption in standby (W) <0.18
Average life time (h / 25°C) 100000
Operating temperature up to (°C) 50


open all / close all


12V rails (multi-rail operation) 2
12V single rail operation
Overclocking key -
+3.3V (A) 21
+5V (A) 20
+12V1 (A) 14
+12V2 (A) 16
+12V3 (A) -
+12V4 (A) -
+12V5 (A) -
+12V6 (A) -
-12V (A) 0.5
+5Vsb (A) 2.5
Max. combined power 12V (W) 264
Max. combined power 3.3V + 5V (W) 103
Hold-up time (ms @ 100%) >17

Fan / Cooling technology

Fan type high-quality fan
+SilentWings -
Motor technology 4-pole fan motor
Bearing technology Sleeve
Fan size (mm) 80
Max. fan speed (rpm), temperature-dependent 2,219
Temperature control for case fans -
dB(A) at 20% load 16.6
dB(A) at 50% load 17.2
dB(A) at 100% load 31.4


OCP (over current protection)
OVP (over voltage protection)
UVP (under voltage protection)
SCP (short circuit protection)
OTP (over temperature protection) -
OPP (over power protection) -

Safety certification

Nemko (N) -
Semko (S) -
Fimko (FI) -
Demko (D) -
cRUus -
cTUVus -
RCM (Australia) -
CU (Russia) -

Eco / Efficiency

80PLUS certification Bronze
Efficiency (%) at 230V, 20% load 87.4
Efficiency (%) at 230V, 50% load 89.2
Efficiency (%) at 230V, 100% load 86.9

Environmental directives


Cable management / Connectors

Multi-GPU ready -
Modular cable management -
Fully modular -
Sleeved cables
Flat cables -
Cable length to mainboard (cm) 35
Cable length to first connector (cm) 35
Maximum cable length (cm) 50
All-in-one cable (SATA/PATA/FDD) -
No. of cables 6
ATX-Motherboard (20+4-pin) 1
P8 (CPU) -
P4+4 (CPU) -
P4 (CPU) 1
PCI-E 6-pin (GPU) -
PCI-E 6+2-pin (GPU) 1
PATA 4-pin 1
SATA 15-pin (HDD, Drives) 4
FDD (Floppy) 1
External fan connectors -


Dimensions without cable (L x W x D), (mm) 100 x 125 x 63.5
Weight (kg) 0.93
Color black


Thumb screws -
Cable ties
Velcro cable ties -
Box/Bag for PSU/Cables -
User manual languages DE, EN, FR, PL, ES
OCK slot bracket with switch / OCK jumper -
SFX-to-ATX adapter bracket -


Warranty (Years) 2
Express replacement service in first year -
International hotline / free of charge ✓ / DE, FR

Logistics data, RRP

Article number BN226
EAN code 4260052183717
Dimensions, package (L x W x H), (mm) 199x195x75
Gross weight, package (kg) 1.3
Pieces per packaging unit 6
Dimensions, shipping box (L x W x H), (mm) 430x269x235
Gross weight, shipping box (kg) 8
RRP (€) 63.00

SFX POWER 2 | 300W
Article number: BN226