The Gigabyte B660M DS3H DDR4 and the Gigabyte B850I AORUS PRO are tied in this objective comparison, as both motherboards secure an equal number of spec wins. The most impactful advantage for the Gigabyte B660M DS3H DDR4 is its memory slot configuration, which offers a 100% improvement over the alternative. Conversely, the Gigabyte B850I AORUS PRO provides a 100% advantage regarding its USB Type-C connectivity, marking the most significant technical gain for that specific model.

Users prioritizing system memory capacity should select the Gigabyte B660M DS3H DDR4 to utilize its superior slot count. This board is the logical choice for builds requiring extensive RAM support. Alternatively, those who rely on modern peripheral connectivity should choose the Gigabyte B850I AORUS PRO for its enhanced USB Type-C capabilities. This option is better suited for users who frequently interface with high-speed external devices that require this specific connection standard.