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PSU Roundup: Performance, Price, Efficiency

Efficiency

Silverstone, the winner in many of our previous efficiency tests, seems to be resting on its laurels. This time around, it lands in last place. Let’s look at the numbers:

Under full load, the Strider’s efficiency is 82.2 percent. At half-load it’s a bit better—Silverstone ends up in the midfield with 86.5 percent. The SST-ST70F truly looks good only at low load, where the power supply outperforms its competitors with 86.7 percent.

This trend continues as the load falls. In our low-power comparison at 35 watts, the Silverstone power supply performs best in the test field with more than 78 percent. But if you’re a low-power user, you’re probably not in the market for a 700 watt power supply, so it’s a bit of a catch 22.

The result for standby is average. At zero load the Strider consumes 1.17 watts; at a load of 2.5 watts it needs 4.57 watts.

Silverstone SST-ST70F

The power supply from Silverstone combines high performance with good cable management, long cables, and many plugs.

  • Positives
  • Negatives
  • Many peripheral plugsLong cablesGood efficiency at low load
  • Low efficiency at full load