compact
Article number: BN323

TFX POWER 3

300W Gold

COMPACT AND SILENT ENERGY

TFX Power 3 300W Gold: the upgraded be quiet! high-efficiency PSU for mini and media PCs with 80 PLUS® Gold certification and PCIe graphics card support.

  • Certified 80 PLUS® Gold efficiency (up to 91.7%)
  • Strong dual 12V-rails for high stability and PCIe graphics card support
  • Two 6+2pin PCIe connectors for powerful GPUs
  • 300W of continuous power
  • High-quality temperature-controlled 80mm fan for low-noise operation of max. 21.7dB(A)
  • Sleeved or flat black cables up to 60cm long
  • Meets the latest safety and efficiency requirements
  • Standby draw less than 0.17 watts
  • Three-year manufacturer’s warranty
  • Product conception, design and quality control in Germany

80 PLUS® GOLD CERTIFICATION

Very high operating efficiency

TFX Power 3 300W Gold is certified 80 PLUS Gold with an efficiency rating of up to 91.7%. With this outstanding energy efficiency, the TFX Power 3 300W Gold ensures low power consumption and by that lower costs alike.

STRONG DUAL 12V RAIL

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.  This makes the TFX Power 3 300W Gold the ideal PSU for all who strive for enough power to support small systems at low noise.

QUIET AND SAFE

Optimized for low-noise operation

The temperature-controlled fan ensures a quiet operation and produces little wasted heat. Since TFX Power 3 300W Gold meets the latest safety requirements, it defends the PC system against overcurrents, over- and undervoltage, short circuit, overloads and comparable failures.

All models at a glance:

Product Series

General data

ModelTFX Power 3 300W Gold
Continuous power (W)300
Peak power (W)350
Form factorTFX12V Version 2.52
Form factor EPS 12VVersion 2.92
Modular Cable management-
Topology-
Wire-free design (DC-side)-
Voltage (Vac)100 - 240
Frequency (Hz)50 - 60
Input current (A)4 / 2
PFCactive
Power factor at 100% load>0.98
Compliant to Intel C6/C7
Power consumption in standby (W)<0.17
Average life time (h / 25°C)100,000
Operating temperature up to (°C)40

Infographics

open all / close all

Output

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 at 100% load (ms)29 (@80%)
Power good signal100 - 150ms

Fan / Cooling technology

Fan typeHigh quality fan
+SilentWings-
Motor technology4-pole fan motor
Bearing technologyRifle
Fan size (mm)80
Max. fan speed (rpm), temperature-dependent1323
Temperature control for case fans-
dB(A) at 20% load9.7
dB(A) at 50% load12.4
dB(A) at 100% load21.7

Protection

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

CE
CB
TÜV
FCC-
cRUus-
cTUVus-
RCM (Australia)-
BSMI-
CU (Russia)
CCC-

Eco / Efficiency

80 PLUS certificationGold
Efficiency (%) at 230V, 20% load88.9
Efficiency (%) at 230V, 50% load91.7
Efficiency (%) at 230V, 100% load90.6

Environmental directives

Energy Star8.0
ErP
WEEE
RoHs

Cables / Connectors

Nvidia® SLI (RTX 3090) ready-
Cable managementFixed
Sleeved cablesSleeved cables
Flat cablesP8 / PCIe / drives
Cable length to mainboard (cm)35
Cable length to first connector (cm)30
Maximum cable length (cm)60
All-in-one cable (SATA/PATA/FDD)-
No. of cables5
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)2
PATA2
SATA3
FDD (Floppy)1
External fan connectors-

Casing

Dimensions without cable (L x W x D), (mm)175 x 85 x 65
Weight (kg)1.1
ColorBlack

Accessories

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

Service

Warranty (Years)3
Express replacement service in first year-
International hotline / free of charge✓ / DE, FR

Logistics data, RRP

Article numberBN323
EAN code4260052188293
Dimensions, package (L x W x H), (mm)80 x 159 x 215
Gross weight, package (kg)1.43
Pieces per packaging unit6
Dimensions, shipping box (L x W x H), (mm)474 x 275 x 195
Gross weight, shipping box (kg)9.39
RRP (€)69.90

TFX POWER 3 | 300W Gold
Article number: BN323

Images