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ASUS · 550 W · ATX

ASUS ROG Strix 550W Gold

ATX 2.4 · 80 PLUS Gold · Modular

Capability: 71
Cap / price: 89
Wattage value: 55
Amazon: $80

View ASUS ROG Strix 550W Gold Gallery in high resolution

Not currently available Updated Feb 23, 2026

Capability71.2

Capability / price88.9

Wattage value55.0

$80 on Amazon PSU table Compare this PSU

Size this PSU for a complete buildThe Builder unlocks PSU choices after it knows the CPU, GPU, case format, and estimated demand. Calculate build power first

Written analysis

ASUS ROG Strix 550W Gold at a glance

The ASUS ROG Strix 550W Gold is a 550 W ATX power supply built to the ATX 2.4 generation. Efficiency is listed as 80 PLUS Gold. Cables are modular. It supports fan-stop at low load.

The calculated capability score is 71.2, averaging the available wattage, recorded efficiency percentage, and warranty inputs against fixed references. Listed warranty is 10 years. +12V output is 45 A.

Best fit: Mainstream gaming and productivity builds where efficiency and cable management matter.

Platform and cooling

Dimensions are listed as 160 x 150 x 86 mm. Cooling fan size is 135 mm. The unit uses 1 +12V rail at up to 45.00 A per rail. Certifications include 80 PLUS Gold.

Current value

At $80, price per kilowatt is $145.45. Capability / price is 88.9 and wattage value is 55.0. Compare nearby supplies below; wattage alone does not determine value.

Unit data

Full specifications

Wattage, efficiency, platform size, electrical outputs, connectors, cooling, and value in one technical sheet.

General

Manufacturer: ASUS
PSU: ASUS ROG Strix 550W Gold
Launch price: —
Amazon price: $80
Amazon availability: Not currently available
Price updated: Feb 23, 2026

Power & efficiency

Wattage: 550 W
Efficiency: 80 PLUS Gold
Recorded efficiency: 91%
Warranty: 10 years

Value

Amazon price: $80
Price / kW: $145.45
Capability: 71.2
Capability / price: 88.9
Wattage value: 55.0

Platform & size

ATX generation: 2.4
Form factor: ATX
Dimensions: 160 x 150 x 86 mm
Modular: Yes
Fanless: No

Electrical

Input voltage: 100-240
+12V output: 45 A
+5V output: 20 A
+3.3V output: 20 A
+12V rails: 1
Max amps / rail: 45.00 A

Cooling & build

Fan size: 135 mm
Fan stop: Yes
Certifications: 80 PLUS Gold

Additional information

Also listed as: ROG Strix 550W Gold

Amazon

Price history

Nearby capability

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