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The MSI B450M-A Pro Max is a budget micro-ATX board for AMD's AM4 socket. It runs Ryzen 3, 5 and 7 chips on the older B450 chipset, with two DDR4 slots, one M.2 slot and a single PCIe 3.0 x16 slot. It has no Wi-Fi, no USB-C and only basic VRM cooling, so it suits low-cost builds and office or light gaming PCs rather than overclocked high-end systems. Against B550 boards it gives up PCIe 4.0 and a second M.2 slot, but it is simpler and cheaper to build around.
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Lowest price we've seen: $167.45 on Nov 10 at Newegg. Tracked across 1 store since Nov 10.
Owners of budget builds generally find it stable and easy to set up, and it is a common pick for low-cost Ryzen systems. Complaints center on the limited memory slots, weak VRM cooling for power-hungry chips and the bare feature set.
