COUGAR CGR ST-550

550 W · Fully modular

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Wattage 550 W
Modular Fully modular

COUGAR CGR ST-550 is a 550 W power supply (fully modular). Pick one with some headroom above your build's draw. It came out in 2025.

Released: 2025-10-16

Specifications

Key specs

Wattage: 550 W
Modular: Fully modular
Released: 2025-10-16
Part number: CGR-ST-550

Power

Total power: 550 W
AC input voltage: 200 - 240 V
AC input frequency: 50 Hz
Input current: 6.3 A
Power Factor Correction (PFC) type: Active
Combined power (+3.3V): 110 W
Combined power (+12V): 504 W
Combined power (+5V): 110 W
Combined power (-12V): 3.6 W
Combined power (+5Vsb): 12.5 W
Max output current (+3.3V): 16 A
Max output current (+12V): 42 A
Max output current (+5V): 18 A
Max output current (-12V): 0.3 A
Max output current (+5Vsb): 2.5 A
Efficiency: 99%
Power protection features: Over current, Over power, Over voltage, Short circuit, Under voltage

Ports & interfaces

Motherboard power connector: 20+4 pin ATX
Motherboard power cable length: 45 cm
Number of SATA power connectors: 5
Number of PATA power connectors: 2
SATA power cable length: 450 mm
Peripheral (Molex) power connectors (4-pin): 1
Peripheral (Molex) power cable length: 450 mm
PCI Express power connectors (6+2 pin): 2
PCI Express power cable length: 45 cm
CPU power connector (4+4 pin): Yes
CPU power cable length: 60 cm
Cabling type: Fully-Modular

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Performance

Purpose: PC

Design

Product colour: Black
Cooling type: Active
Fan diameter: 12 cm
Number of fans: 1 fan(s)
Fan location: Top
On/off switch: Yes

Weight & dimensions

Width: 150 mm
Depth: 140 mm
Height: 86 mm
Weight: 1.35 kg

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About this product

Power Conversion Efficiency Up to 86% efficiency under 230V. A guaranteed highly reliable power supply. Active Power Factor Correction High power conversion efficiency. PF value up to 99%, provides clean and reliable power 120mm Extreme Temperature Control Using COUGAR’s exclusive 120mm silent fan, the advanced frame increase the concentration of air-flow and its fan curvature has been fine-tuned to reduce vibration at any loads, helping you enjoy a quieter gaming experience. Assigned Japanese Components XTC includes 105ºC Japanese standby capacitor will keep providing the stable PSU for a long time. The Japanese polypropylene capacitor minimize the noise during the voltage transition. Massive Single +12V DC Output Tight voltage regulation and extreme stability for powerful graphic systems.

Datasheet (PDF)