The ASRock X870 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 X870 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 X870 Steel Legend WiFi is the objective winner of this comparison, securing victory 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 alternative. This substantial lead in memory support establishes the ASRock X870 Steel Legend WiFi as the superior choice for users prioritizing high-capacity system configurations and modern hardware standards.
Users requiring extensive memory headroom should select the ASRock X870 Steel Legend WiFi for their build. Conversely, the MSI PRO B660M-A WIFI DDR4 is the better option for those who specifically prioritize expansion, as it offers a 100% advantage in available PCIe x1 slots. Choosing between these two motherboards depends entirely on whether your primary requirement is the significantly higher memory ceiling provided by the former or the increased slot connectivity offered by the latter.
Generated by Gemini from the objective spec comparison above. AI advice is a summary, not a benchmark — always verify critical purchases.
