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The Fatal1ty 990FX Professional provides most of the overclock settings needed to push AMD’s FX CPU near its limits, though the firmware version we used still appeared somewhat immature. For example, setting “AMD Turbo Core Technology” to “Disabled” did not prevent the board from jumping up one or two multiplier settings under low to moderate load, so that our search for the highest stable frequency forced us to enable and then disable Turbo Core using AMD's Overdrive software.
CPU Load-line Calibration kept our voltage stable throughout testing.
The Fatal1ty 990FX Professional provides tuners with a full set of primary and secondary memory timing adjustments through drop-down ratio menus that appear only after selecting “Manual” from the timing’s main tab.