The ASRock X870 Steel Legend WiFi is the objective winner of this comparison, securing more total specification victories than its competitor. Its most significant advantage is a 33% higher maximum memory capacity, which provides a notable edge for memory-intensive workloads. While both motherboards offer competitive feature sets, this superior memory support establishes the ASRock X870 Steel Legend WiFi as the more capable option for users prioritizing high-density system configurations.

Users who require maximum RAM capacity for professional applications or heavy multitasking should choose the ASRock X870 Steel Legend WiFi. Conversely, the ASUS ROG STRIX Z790-E GAMING WIFI is the better selection for those who prioritize expansion capabilities, as it offers a 50% advantage in the number of PCIe x16 slots. Selecting between these two boards depends entirely on whether your specific build demands greater memory headroom or increased connectivity for additional expansion cards.