At 600W, the Amacrox Free Earth 88PLUS PSU will handle the load generated by the majority of single GPU systems, and with an 80+ Silver rating you can expect a lower power bill than with less efficient choices.  In the testing that Hardware Secrets performed they saw the claimed efficiency until the load crested 86% which saw that number decline to 84.9% efficiency at 99% load, a scenario that should not often happen under normal usage; if you pull that much power you need a PSU with more wattage.  Check the full review here.

“Amacrox Free Earth 88PLUS 600 W (AX600-88FE) is a 80 Plus Silver-certified unit, with the manufacturer promising 88% efficiency at typical load (i.e., 300 W). Let’s see if this unit is a good product.”

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