The ASRock H670 Steel Legend and the Gigabyte B850 GAMING X are tied in this objective comparison, as both motherboards secure an equal number of specification wins. 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, delivering a 100% increase in maximum supported RAM compared to its rival.

Users who prioritize expansion capabilities for additional add-in cards should select the ASRock H670 Steel Legend to take advantage of its superior PCIe x1 slot count. Alternatively, those who require extensive memory support for demanding workloads or future-proofing should choose the Gigabyte B850 GAMING X. Because both boards offer an identical number of winning specifications, the final decision rests entirely on whether your specific build requires more peripheral connectivity or higher total system memory capacity.