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Corsair TX550M Power Supply Review

The cooling of the Corsair TX550M if taken care of by a 140mm fan which is commonly found inside the TX series units. The fan is made by Yate Loon, a Taiwanese electronics manufacturer, and it is a ball bearing fan with a maximum rotational speed of 2800RPM. A thin plastic sheet is covering about 20% of the fan's surface, which Corsair probably installed in an attempt to direct the airflow in a more efficient way.

The Corsair TX550M shares the same base design with its more powerful TX750M counterpart, a design developed by CWT (Channel Well Technologies). The two units are basically identical, save for the downsized parts.

The filtering stage is adequate, although not special. Starting at the back of the A/C receptacle and continuing on the PCB. It totally consists of four Y-type capacitors, two X-type capacitors, two coils and a surge suppressing MOV.

The primary capacitor of the power supply is supplied by Matsushita and is rated at 400V/330μF at 105°C. Nippon Chemi-Con supplies the secondary side capacitors.

The heatsinks of the TX550M are extremely small; they are nothing more than solid metallic bars with little heat dissipation surface and no fins at all. They did work well enough to keep the 750W model operational though, so we believe that they are more than adequate for the 550W model sharing the same design.

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