The Gigabyte B850 GAMING X is the objective winner of this comparison, securing seven spec victories against the single win held by the Gigabyte B660M DS3H DDR4. The most impactful advantage for the winning board is its maximum memory capacity, which is 100% higher than that of its competitor. While the Gigabyte B660M DS3H DDR4 maintains a 50% advantage in MSRP, the Gigabyte B850 GAMING X dominates the majority of the evaluated technical specifications.

Users prioritizing memory-intensive tasks should select the Gigabyte B850 GAMING X to leverage its superior capacity. Conversely, the Gigabyte B660M DS3H DDR4 is the appropriate choice for budget-conscious builders who value the 50% MSRP advantage over the expanded memory support found in the alternative model. Choosing between these two motherboards depends entirely on whether your primary requirement is maximizing system memory potential or minimizing initial hardware expenditure.