Enermax Triathlor 550W Review & Specs

Enermax Triathlor 550W 80 PLUS Bronze Modular ETA550AWT-M

Enermax Triathlor 550W 80 PLUS Bronze Modular ETA550AWT-M

- Enermax

★ ★ ★ ★ ★
(3 reviews)

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  • ATX12V v2.31 ready! Compliant with the newest standard for desktop power supplies.
  • 82PLUS ready! 82-88% efficiency @ 20-100% load. Compliant with 80PLUS BRONZE efficiency requirements.
  • Stability ready! DC to DC converter design lowers energy loss for higher efficiency and better dynamic response and cross regulation. 12V Synchronous Rectifier design for higher efficiency and greater power density.
  • Zero Load Design Stable voltage output even at 0W load, that supports the energy-saving functions of modern CPU and graphics cards (C6 State/Hybrid Mode) and prevents compatibility issues.
  • T.B. Silence fan inside! Integrated T.B. Silence 12cm fan with patented Twister Bearing to reduce the noise and prolong lifetime.
  • Air Guard, Safeguard, Speed Guard, DXXI , and Power Up ready!

Specifications Overview

Model ETA550AWT-M
Wattage 550W
Type ATX12V
Modular Semi
Efficiency 80+ Bronze
Output +3.3V@24A, +5V@24A, +12V1@25A, +12V2@25A, -12V@0.5A, +5VSB@2.5A
PCI-Express 6+2 Pin Connectors 3
EPS Connectors 1
SATA Connectors 6
Molex Connectors 5


  • Very good 12v voltage regulation
  • Very good ripple suppression
  • Quiet during normal operation


  • A bit loud under heavy load
  • Loose voltage regulation on the minor rails
  • Lower than 16 ms hold-up time
AC Input Voltage 100-240VAC, 50-60Hz
AC Input Current 7.5 - 3A 8.3 - 3.2A
  Rated Combined Rated Combined
3.3V 24A 120W 24A 140W
5V 24A 24A
12V1 25A 540W
30A 648W
12V2 25A 30A
-12V 0.5A 6W 0.5A 6W
5Vsb 2.5A 12.5W 2.5A 12.5W
Total Power 550W 650W
Peak Power* 600W 715W
Over Current Protection DC Rail OCP trigger range
3.3V 30 - 40A
5V 30 - 40A
12V 35 - 45A (ETA550AWT-M) / 40 - 50A (ETA650AWT-M)
Over Voltage Protection DC Rail OVP trigger range
3.3V 3.7 - 4.1V
5V 5.7 - 6.5V
12V 13.1 - 14.5V
(DC) Under Voltage Protection DC Rail UVP trigger range
3.3V 2.0 - 2.4V
5V 3.3 - 3.7V
12V 8.5 - 9.5V
Over Power Protection Activated when output power > 120 ~ 150% of rated max load.
Over Temperature Protection Activated when PSU heat sink > 90 ~ 120 oC.
Short Circuit Protection Activated when any DC rails short-circuited
Temperature Operation ambient: 0~40oC (for full rated output)
Storage ambient: -40oC
Humidity Operation: to 85% relative humidity, non-condensing
Storage: to 95% relative humidity, non-condensing
Cooling One 12cm twist bearing fan, speed auto controlled
MTBF > 100,000 hours at 70% of full rated load, 230Vac/50Hz, 25oC ambient (MIL-HDBK-217F standard)
Dimension 150(w) x 88(h) x 140(d) mm
Weight Around 2kg (without modular cables)
Safety EMC CE / FCC / BSM / GOST

Critic Reviews


Enermax has a good quality power supply in their Triathlor FC 550W unit. Under the hood they are using all Japanese capacitors. It has a nice compact size that will fit in pretty much any case that supports ATX power supplies. There are only two...


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Enermax managed to build affordable and well-performing PSUs without the help of another OEM (unlike the NAXN series), which means they have finally adapted to current times by supplying their own mainstream and mid-end products, since the money...


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Overall the build quality of the Triathlor is good with a decent external design and quality braided cables used. We also get a solid chassis with no noticeable quality issues. Inside the unit is packed with components with plenty of nice touches such as...


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