The ASRock H670 Steel Legend and the Gigabyte B850 GAMING X are tied in this objective comparison, as both motherboards secure four wins across the evaluated specifications with five categories resulting in a draw. The most impactful advantage for the ASRock H670 Steel Legend is its PCIe x1 slot configuration, which offers a 200% improvement over the competition. Conversely, the Gigabyte B850 GAMING X provides a significant lead in memory capacity, boasting a 100% advantage in maximum supported RAM.

Users who prioritize expansion capabilities for additional peripherals should select the ASRock H670 Steel Legend for its superior PCIe x1 slot count. This board is best suited for builds requiring multiple add-in cards. Alternatively, those who require extensive system memory for demanding workloads or future-proofing should choose the Gigabyte B850 GAMING X. Its capacity to support double the maximum memory makes it the ideal choice for users focused on high-density RAM configurations.