Corsair CX550F RGB Power Supply Review

The CX550F is one of the few Corsair PSUs with RGB lighting.

Corsair CX550F RGB
(Image: © Tom's Hardware)

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Performance Rating

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The CX550F achieves good performance. Although it uses a more modern platform than the CX550M and the XPG Pylon 550, it cannot match their performance. The situation would be different with lower ripple at 12V and tighter load regulation on all rails. 

Noise Rating

The graph below depicts the cooling fan's average noise over the PSU's operating range, with an ambient temperature between 30 to 32 degrees Celsius (86 to 89.6 degrees Fahrenheit).

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Under normal operating temperatures, the average noise output is not high. However, it could be even lower given the unit's high-efficiency levels. On the other hand, the not-so-high-quality Teapo SC caps need good airflow to live longer. 

Efficiency Rating

The following graph shows the PSU's average efficiency throughout its operating range with an ambient temperature close to 30 degrees Celsius.

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The CX550F achieves Gold level efficiency, so it easily reaches first place in this chart. 

Power Factor Rating

The following graphs show the PSU's average power factor reading throughout its operating range with an ambient temperature close to 30 degrees Celsius and 115V/230V voltage input. 

Corsair CX550F

(Image credit: Tom's Hardware)

The APFC converter does a good job, delivering high PF readings with 115V input. 

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Contributing Editor

Aris Mpitziopoulos is a Contributing Editor at Tom's Hardware US, covering PSUs.

  • Panzerbjorne39
    Curious why a rifle bearing fan is listed here under a Pro. Isn’t that the cheaper and louder of the common fan bearings?