Key Highlights
550W Continuous Power
Provides 550W of rated continuous output for compatible everyday desktop and entry-level gaming configurations.
Bronze Efficiency
80 PLUS Bronze certification with manufacturer-listed efficiency of up to 88% under applicable test conditions.
120mm Cooling Fan
A thermally controlled fan adjusts its speed according to operating conditions to balance cooling and noise.
Compact 125mm Design
The short 125mm chassis helps provide easier installation in a wide range of compatible ATX cases.
Introduction
The Corsair CX550 is a 550W ATX power supply designed for dependable everyday desktop operation and compatible entry-level gaming PCs. It combines 80 PLUS Bronze efficiency with a straightforward non-modular cable design, making it a practical option for standard desktop configurations.
Its 120mm thermally controlled sleeve-bearing fan adjusts cooling according to load, while the compact 125mm-long chassis supports installation in many modern PC cases. The CX550 provides one 24-pin motherboard connector, one 4+4-pin EPS CPU connector, two PCIe 6+2-pin connectors and three SATA power connectors.
The power supply uses an ATX 12V v2.31 design and supports 100–240V AC input. Corsair lists a five-year warranty and a 100,000-hour MTBF specification. Product model: CP-9020277-IN.
Features
550W Continuous Output
Delivers up to 550W of continuous rated power, including up to 528W on the +12V rail, for compatible system configurations.
80 PLUS Bronze Efficiency
Bronze certification indicates efficient power conversion under applicable certification conditions, with efficiency specified up to 88%.
120mm Thermally Controlled Fan
The cooling fan adjusts its speed to operating conditions, helping balance airflow and acoustic performance.
Compact 125mm Chassis
The short 125mm chassis helps simplify installation in compatible ATX cases and leaves room for cable routing.
Dedicated PCIe Power Connections
Two PCIe 6+2-pin connectors support compatible graphics cards. Check the graphics card manufacturer's recommended PSU wattage and connector requirements.
Five-Year Warranty
Corsair lists a five-year warranty for this model, subject to the applicable warranty terms and conditions.
Technology and Design
80 PLUS Bronze Power Conversion
The CX550 carries 80 PLUS Bronze certification, indicating power-conversion efficiency under the applicable certification testing conditions. Actual efficiency varies with load and input conditions.
Thermally Controlled Cooling
A 120mm sleeve-bearing fan provides cooling and varies its speed according to PSU operating conditions. The fan is designed to run more slowly at lighter loads and increase cooling when needed.
ATX 12V v2.31 Platform
The CX550 uses the ATX form factor and ATX 12V v2.31 specification. It is suited to compatible systems that do not require a newer ATX 3.x power supply or a native 12V-2x6 GPU connection.
Straightforward Non-Modular Cabling
All power cables are permanently attached to the PSU. This keeps the design simple, although unused connectors must be tucked away during installation. The 125mm chassis helps with fitment in compatible cases.
Technical Specifications
Recommended Use Cases
Everyday Desktop PCs
A practical option for compatible office desktops, home computers and general-purpose systems.
Entry-Level Gaming PCs
Suitable for compatible gaming systems using graphics cards whose power requirements fit within the PSU's capabilities.
Budget PC Builds
The non-modular design offers a straightforward installation for cost-conscious desktop configurations.
Compact ATX Builds
The 125mm chassis can help with installation in compatible cases where PSU length and cable clearance matter.
Before You Build
- Check the combined power requirements of the CPU, graphics card, storage and other components before choosing a 550W PSU.
- Verify that your graphics card's recommended PSU wattage and power connectors are compatible with this unit.
- This PSU has two PCIe 6+2-pin connectors; it does not include a native 12V-2x6 GPU power connection.
- Confirm that your case supports an ATX power supply and has sufficient clearance for the cables.
- Because the PSU is non-modular, unused power connectors must be routed and secured neatly inside the case.
- Check the motherboard's CPU EPS connector requirements before installation.
- Confirm the applicable five-year warranty terms for SKU CP-9020277-IN with the seller before purchase.
Frequently Asked Questions
1. What is the rated wattage of the Corsair CX550?
The Corsair CX550 is rated for 550W of continuous power output, with up to 528W available on its +12V rail.
2. Is the Corsair CX550 80 PLUS Bronze certified?
Yes. It carries 80 PLUS Bronze certification, with manufacturer-listed efficiency of up to 88% under applicable conditions.
3. Is this power supply fully modular?
No. The CX550 is non-modular, meaning its power cables are permanently attached to the PSU.
4. How many PCIe power connectors are available?
The specifications list two PCIe 6+2-pin connectors on one cable run. Check your graphics card's power requirements before installation.
5. What type of cooling fan does the CX550 use?
It uses a 120mm sleeve-bearing fan with thermally controlled speed for cooling according to operating conditions.
6. Will the CX550 fit in a standard ATX case?
It uses the ATX PSU form factor and has a compact 125mm length. Check your case's PSU compatibility and cable-clearance requirements.
7. Does it have a native 12V-2x6 GPU connector?
No native 12V-2x6 connector is listed. The CX550 provides two PCIe 6+2-pin connectors. Follow your graphics card manufacturer's power-supply and cable recommendations.
8. What is the warranty period?
Corsair lists a five-year warranty for the CX550. Confirm the applicable regional terms and conditions with the seller.
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