The Corsair CX550 ATX 3.1 550W power supply delivers reliable power, efficient operation and low noise cooling for modern desktop and gaming PC builds. Compliant with the ATX 3.1 power supply standard, it provides 550W of continuous power with a robust +12V output rated at 45.8A, supporting stable power delivery for compatible processors and graphics cards. Its Cybenetics Bronze efficiency certification offers up to 85 percent overall efficiency, helping reduce energy waste and operating temperatures. A custom tuned 120mm cooling fan uses an optimised fan curve to maintain quiet operation, while the distinctive Y-pattern fan grille promotes airflow through the compact chassis. Measuring just 125mm in length, the CX550 is designed for straightforward installation in compatible ATX cases, with its fixed, hardwired cables providing secure plug-and-play connections. Connectivity includes a 24-pin ATX motherboard connector, 4+4-pin EPS12V CPU connector, two 6+2-pin PCIe connectors, three SATA power connectors and two PATA connectors. Built with robust LLC topology and capacitors rated for operation at up to 105 degrees Celsius, it is designed for dependable performance over extended use. The Corsair CX550 ATX 3.1 is a compact and practical 550W power supply for reliable everyday computing and gaming systems.
Features
Corsair CX550 ATX 3.1 Cybenetics Bronze 550W Power Supply
The CX ATX 3.1 550W power supply is perfect for any PC build and offers reliable power delivery, low-noise operation, and modern features. It is ATX 3.1 certified and features a plug-and-play design, so it is future proof and easy to connect. Its super compact 125mm design gives you with plenty of room for cable management. It offers Cybenetics Bronze efficiency and its 120mm fan is custom-tuned for quiet computing and low temperatures. It’s available in both black and white and a striking Y-pattern fan grill complements any PC build.
ATX 3.1 Certified
Meets the latest ATX 3.1 power delivery standards, providing a stable and reliable foundation for modern PC builds.
Five-Year Warranty
Backed by a five-year warranty, providing reliable power and peace of mind through future system upgrades.
Super Compact Size
Measuring just 125mm in length, the CX550 is easy to install in compatible ATX cases while leaving additional room for cable management.
Plug-and-Play Design
Hardwired cables provide secure connections and simplify installation by ensuring the required power connectors are ready to use.
Cybenetics Bronze Certified
Cybenetics Bronze certification delivers up to 85% overall efficiency for efficient power delivery.
Low-Noise 120mm Fan
A custom-tuned 120mm cooling fan with an optimised fan curve helps maintain low-noise operation during everyday use.
Robust LLC Topology
The LLC topology supports efficient operation, high power density and low temperatures within the compact power supply design.
105°C Capacitors
High-quality capacitors rated to withstand temperatures of up to 105°C provide dependable operation and long-term reliability.
Specifications
General Data
| Model Number |
CP-9020327-AU |
| Series |
CX ATX 3.1 |
| Model |
CX550 ATX 3.1 |
| Product Type |
ATX Power Supply |
| Colour |
White |
| Total Power Output |
550W |
| Form Factor |
ATX |
| ATX Version |
ATX 3.1 |
| EPS12V Version |
2.92 |
| Modularity |
Non-Modular (Fixed Cables) |
| Efficiency Certification |
Cybenetics Bronze |
| Maximum Efficiency |
Up to 85% |
| Warranty |
5 Years |
| What's Included |
CX ATX 3.1 Power Supply, Power Cord, DC Cables, Mounting Screws |
Input Specifications
| AC Input Voltage |
100–240V AC |
| Input Current |
10A–5A |
| Input Frequency |
47–63 Hz |
Power Output
| +3.3V Rail |
20A |
| +5V Rail |
20A |
| +3.3V and +5V Combined Output |
100W |
| +12V Rail |
45.8A / 550W |
| -12V Rail |
0.3A / 3.6W |
| +5VSB Rail |
3A / 15W |
| Total Power Output |
550W |
Cooling
| Fan Size |
120 mm |
| Fan Operation |
Low-Noise Operation |
| Fan Design |
Y-Pattern Fan Grill |
Power Supply Features
| Power Delivery Standard |
ATX 3.1 |
| Topology |
LLC Topology |
| Capacitor Temperature Rating |
105°C |
| Cable Design |
Hardwired Plug-and-Play |
Included Cables
| 24-pin ATX Motherboard Cable |
1 x 24-pin, 600 mm, Sleeved |
| CPU Power Cable |
1 x 4+4-pin EPS12V, 600 mm, Flat |
| PCIe Power Cable |
1 x Dual 6+2-pin PCIe (2 connectors), 600 mm, Flat |
| SATA Power Cable |
1 x 3 SATA connectors, 600 mm, Flat |
| PATA Power Cable |
1 x 2 PATA connectors, 500 mm, Flat |
Cable Connector Spacing
| PCIe Connectors |
500 mm / 100 mm |
| SATA Connectors |
400 mm / 100 mm / 100 mm |
| PATA Connectors |
400 mm / 100 mm |
| Cable Modularity |
Fixed (Non-Modular) |
Physical Specifications
| Dimensions |
150 x 125 x 86 mm |
| Product Weight |
1.587 kg |
Backed by a 5 year Corsair warranty.
