The ASRock B850 Steel Legend WiFi wins in 10 out of 14 comparable specs, with 2 ties. Its biggest advantage is Max Memory (300% better).
PRO B660M-A WIFI DDR4 wins in 2 specs (PCIe x1 Slots: 100% better).
Recommendation
Choose B850 Steel Legend WiFi if you want the best overall performance — especially max memory.
Choose PRO B660M-A WIFI DDR4 if pcie x1 slots matters more to you.
AI Versus Verdict
The ASRock B850 Steel Legend WiFi is the objective winner of this comparison, securing victories in ten out of fourteen evaluated specifications. Its most significant technical advantage is its maximum memory capacity, which is 300% higher than that of the competing board. This substantial lead in supported memory volume establishes the ASRock B850 Steel Legend WiFi as the superior option for users prioritizing high-density RAM configurations and overall system scalability.
Users who require extensive memory overhead for demanding workloads should choose the ASRock B850 Steel Legend WiFi. Conversely, the MSI PRO B660M-A WIFI DDR4 is the better selection for those who prioritize expansion flexibility, as it offers a 100% advantage in the number of available PCIe x1 slots. Selecting between these two motherboards depends entirely on whether your specific build requirements prioritize maximum memory capacity or the need for additional PCIe x1 connectivity.
Generated by Gemini from the objective spec comparison above. AI advice is a summary, not a benchmark — always verify critical purchases.