Quick Summary
The CORSAIR CX550 is an ATX 550 Watt power supply in black with non modular cabling and low-noise cooling. It is described as 80 PLUS Bronze certified and uses a 120mm thermally controlled fan for quieter operation at lower loads.
For buyers comparing PC power supplies, the key points here are the stated 550 Watt output, the non modular cable design, and the compact 125mm length for case fit checks.
Who It Is Best For
This power supply suits buyers who need a black ATX unit with a fixed cable layout and want to check case space before fitting it. It also suits anyone comparing a 550 Watt supply against their system requirements.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Product | CORSAIR CX550 power supply. |
| Wattage | 550 Watt rated output for checking against your system’s power needs. |
| Certification | 80 PLUS Bronze certified. |
| Cable design | Non modular cable layout. |
| Cooling | 120mm thermally controlled low-noise cooling fan. |
| Case length | 125mm length for fitting checks in PC cases. |
| Colour | Black sleeving and black powder-coated casing. |
Why Buyers Choose It
- The stated 80 PLUS Bronze certification gives a clear efficiency reference for comparing power supplies.
- The 120mm thermally controlled fan is set up to run more quietly at lower loads.
- The 125mm casing length gives a practical case-fit check before ordering.
- Black sleeved cables and casing provide a consistent visual finish inside the PC.
How It Works
The unit supplies continuous power at its rated 550 Watt level and uses thermal fan control to adjust cooling according to load. At heavier stress, the fan is described as spinning faster, then slowing down at lower loads for quieter operation.
What To Know Before You Buy
Check that 550 Watt is the right power level for your build and confirm that your case has space for the stated 125mm length. The fixed cable layout also matters if you prefer a modular PSU for easier cable management.
Pros: The 80 PLUS Bronze certification, compact 125mm length and low-noise fan setup give clear specification points for planning a build.
Cons: The non modular design means the cable layout is fixed.
Common Buyer Questions
Is this a modular power supply?
No. It is a non modular power supply.
What size fan does it use?
It uses a 120mm thermally controlled low-noise cooling fan.
Will it fit in my PC case?
It has a stated 125mm length, so you should check your case clearance before ordering.
What finish does it have?
It is black, with black sleeved cables and a black powder-coated casing.
Final Buying View
The CORSAIR CX550 is a straightforward 550 Watt ATX power supply with non modular cabling, Bronze certification and a compact 125mm length. Confirm your power requirement and case space before choosing it.





