[H]ard|ocp did a thorough test on the GX 650 and it wasn't good. My take is that while it failed load tests, it is still cheaper (about RM 340) than many other brands (around RM 400, and above) for 650w PSU and it should be fine for general usage.

The Cooler Master GX 650W is a mediocre power supply for couple of years ago, and an outright failure today. The Build Quality of the unit is nothing to write home about (unless it is a warning), the topology is old and outdated, and the exterior is...