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PSU Roundup: Performance, Price, Efficiency


The power supplies we’ve seen from Cooler Master have relatively high efficiency. However, the Silent Pro is a bit disappointing. Instead of remaining at the top, the Cooler Master unit ends up somewhere in the middle of our pack; it gets close to 87 percent efficiency but doesn’t quite make it. Therefore, the efficiency at low loads of 85.3 percent doesn’t drop as much as it might if our 50% load numbers were higher. Under maximum load, the PSU reaches almost 84 percent.

Very surprising, however, is the standby power consumption: a mere 0.35 watts—the best among the products we tested. This is the draw taken from the connection socket when there is no load. When the load increases to 2.5 watts, the power consumption remains good, at 4.12 watts.

Cooler Master Silent Pro 500

The power supply offers acceptable performance for the price. The flexible cables make wiring a much simpler proposition, which we like.

  • Positives
  • Negatives
  • Flat, flexible wires Lots of connectivityLow standby energy consumption
  • Relatively low efficiencyCords aren’t color coded