Article number: BN229


300W Gold

Compact and Silent Energy

TFX Power 2 300W Gold, the advanced and compact be quiet! PSU, gives you more for your mini or media PC. It is the perfect upgrade for any PC chassis demanding a TFX form factor PSU. Designed for higher efficiency, it supports Energy Star 5.2 requirements, ErP 2014, and 80 PLUS Gold (up to 91%), while providing solid voltages and power to support a PCIe graphics card (6-pin connector included).

For compact PC systems that perform beyond the ordinary, with the best combination of features, power, high efficiency , be quiet! reliability and quietness, choose TFX Power 2 300W Gold .


Very high operating efficiency

TFX Power 2 300W is certified 80 PLUS Gold with an efficiency rating of up to 91% – a truly outstanding achievement in this PSU class! The most compelling benefits: lower power consumption, lower costs, and cooler, quieter operation.


For a stable operation

The dual 12V rail design supports high stability as the CPU receives its power through an independent rail. For demanding peripherals like a graphics card, a PCIe connector is included. Safety protections defend against overcurrents, over- and undervoltages, short circuits and overloads, thus keeping your valuable components safe.

All models at a glance:


General data

Model TFX Power 2 300W Gold
Continuous power (W) 300
Peak power (W) 330
Form factor ATX 12V TFX 12V Version 2.4
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 / 2
PFC active
Power factor at 100% load >0.99
Compliant to Intel C6/C7
Power consumption in standby (W) <0.11
Average life time (h / 25°C) 100,000
Operating temperature up to (°C) 40


open all / close all


12V rails (multi-rail operation) 2
12V single rail operation -
Overclocking key -
+3.3V (A) 18
+5V (A) 18
+12V1 (A) 13
+12V2 (A) 13
+12V3 (A) -
+12V4 (A) -
+12V5 (A) -
+12V6 (A) -
-12V (A) 0.3
+5Vsb (A) 3
Max. combined power 12V (W) 288
Max. combined power 3.3V + 5V (W) 103
Hold-up time (ms @ 100%) >16
Power good signal 100 - 500ms

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 1815
Temperature control for case fans
dB(A) at 20% load 12.7
dB(A) at 50% load 14.5
dB(A) at 100% load 26.5


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

80 PLUS certification Gold
Efficiency (%) at 230V, 20% load 88.6
Efficiency (%) at 230V, 50% load 91.6
Efficiency (%) at 230V, 100% load 89.7

Environmental directives

Energy Star 6.0

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) 65
All-in-one cable (SATA/PATA/FDD) -
No. of cables 5
ATX-Motherboard (20+4-pin) 1
P8 (CPU) -
P4+4 (CPU) -
P4 (CPU) 1
PCI-e 6-pin (GPU) 1 (via adapter)
PCI-e 6+2-pin (GPU) -
PATA 4-pin 2
SATA 15-pin (HDD, Drives) 4
FDD (Floppy) 1
External fan connectors -


Dimensions without cable (L x W x D), (mm) 175 x 85 x 65
Weight (kg) 1.08
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 BN229
EAN code 4260052183748
Dimensions, package (L x W x H), (mm) 195 x 80 x 159
Gross weight, package (kg) 1.4
Pieces per packaging unit 6
Dimensions, shipping box (L x W x H), (mm) 430 x 275 x 195
Gross weight, shipping box (kg) 9
RRP (€) 77.00

TFX POWER 2 | 300W Gold
Article number: BN229