Though they are based on the same chipset, the Gigabyte 890GPA-UD3H and ASRock 890GX Extreme3 do have differences.  The Gigabyte board is a member of the Power of 3 family, so it sports USB 3, S-ATA 3 and USB Power 3x as well as a pair of PCIe 16x slots.  The ASRock also has threes, advertising USB 3.0, SATA 3 and e-SATA 3 (even though the later pair are the same) and three PCIe 16x slots.  ASRock also decided to drop IDE completely from the board and you can also spot differences on the back panels.  Take a peek at MektuMods for the full details.

"Two motherboards with AMD’s 890GX chipset goes head to head to see which one takes the top spot."

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