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Power, Heat, And Efficiency

Five $160 To $240 990FX-Based Socket AM3+ Motherboards

ASRock and MSI tie for first place in power-savings, with MSI showing the lowest idle wattage, and with all power-management options enabled in each motherboard’s firmware.

Asus has the lowest voltage regulator temperatures, closely followed by Gigabyte.

Since efficiency is a comparison of work to energy, we compare average performance to average power consumption. The Sabertooth 990FX has the best overall performance, even though it’s a very small lead.

ASRock’s first-place power savings and second-place performance puts it at the top of our efficiency chart, where 100% represents the average of all motherboards tested.

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