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Compact build enthusiasts who want AM5 performance in a Micro-ATX footprint without sacrificing ROG's software ecosystem or power delivery quality will find the ROG Strix B850-G the only mATX AM5 option in this comparison. At $247.12, the per-feature cost is higher than ATX alternatives — the ASUS TUF Gaming B850-PLUS WiFi delivers more PCIe expansion in ATX for $20 less. The B850-G is the right choice when the case dictates mATX and the builder needs Ryzen 7 or 9 performance with PCIe 5.0 storage in a smaller envelope. With 80 reviews at launch, BIOS maturity is still developing compared to the ATX alternatives; if avoiding early-revision quirks is a concern, allow an extra BIOS revision cycle before purchasing.
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Last checked: Jul 9, 2026