MSI’s refresh of its AMD 800-series motherboards brings a subtle but noteworthy change: a doubling of the BIOS capacity. The MSI MAG B850 Gaming Plus Max WiFi, priced at $260, is one such updated model, replacing the standard 32 MB BIOS chip with a more spacious 64 MB version. Beyond this technical upgrade and the addition of “Max” to its name, the motherboard presents itself as a contender for builders prioritizing a specific aesthetic and network speed, though its value proposition faces stiff competition in a crowded market.
Specifications and Core Features
At its core, the B850 Gaming Plus Max WiFi supports AMD’s Ryzen 7000, 8000, and 9000 series processors on the AM5 socket. It offers DDR5 memory support with official speeds up to 8200+ MT/s (overclocked), though practical speeds for most users align with the 6000-6400 MT/s sweet spot for Ryzen’s memory controller. Storage connectivity is handled by three M.2 slots—one PCIe 5.0 x4, one PCIe 4.0 x4, and one PCIe 4.0 x2—alongside four SATA 6Gbps ports.
Connectivity and Audio
The board’s standout feature is its 5G LAN, powered by a Realtek RTL8126 controller, a rarity in this price segment. Wireless connectivity is modern, with Wi-Fi 7 and Bluetooth 5.4 support. However, the audio solution feels dated, utilizing the older Realtek ALC897 codec instead of newer options like the ALC4080. USB connectivity is plentiful with 17 total ports, but lacks high-speed 20Gbps or USB4 ports, a notable omission for a $260 motherboard.
Design and Build Quality
MSI has inverted the color scheme from the original model. The B850 Gaming Plus Max WiFi features a white PCB and matching white heatsinks, accented with sleek black diagonal lines. This creates a cohesive and visually striking appearance tailored for white-themed PC builds. The board uses a 6-layer PCB with 2oz copper and incorporates MSI’s design elements for signal integrity and EMI suppression.
Power Delivery and Cooling
The power delivery system is a point of contention. It employs a 12+2+1 phase design using discrete 50A MOSFETs, a more traditional and less efficient approach compared to the integrated DrMOS or SPS designs common in modern boards at this price. The VRM heatsinks feature a stacked fin design but lack a connecting heatpipe. In testing, this setup resulted in VRM temperatures higher than some competitors, indicating limited overclocking headroom.
Performance and Benchmark Results
In synthetic and gaming benchmarks, the motherboard delivered performance perfectly in line with expectations for the platform. Using a Ryzen 9 9950X and RTX 4090, it produced standard scores in Blender, Cinebench 2024, and V-Ray. Gaming performance in titles like Cyberpunk 2077, Far Cry 6, and Starfield matched that of other B850 boards, confirming there is no inherent performance penalty or boost.
Power Consumption and Boot Times
System power consumption was recorded at 105W idle, 112W during gaming, and 355W under a full multi-core Cinebench load. The board posted a 22-second boot time into Windows 11, a typical result for the platform. The VRM temperatures, peaking at 64°C under stress, were noted as being on the higher side compared to some alternatives.
Quality-of-Life Features and Internal Layout
Where MSI often excels is in user-friendly design, and this board includes several helpful features. The primary PCIe x16 slot and M.2 slots utilize EZ release mechanisms for easier installation and removal of graphics cards and SSDs. An external BCLK (base clock) generator is included, allowing for separate adjustment of CPU and memory clocks—a useful tool for enthusiasts. The board also provides a front-panel connector cable to simplify one of the more fiddly parts of a build.
Rear I/O and Expansion
The pre-installed I/O shield offers a clean selection: a Clear CMOS button, a Flash BIOS button, the 5G LAN port, Wi-Fi antenna connections, audio jacks, and a mix of USB ports. The expansion slot layout includes one full-speed PCIe 5.0 x16 slot, one PCIe 4.0 x4 slot, and two PCIe 3.0 x1 slots. The four DDR5 DIMM slots support up to 256GB of RAM.
Market Position and Value Assessment
The MSI MAG B850 Gaming Plus Max WiFi occupies a challenging position. Its $260 price tag places it in direct competition with feature-rich boards from ASRock and MSI’s own more capable Tomahawk series. The board’s primary advantages are its distinctive white aesthetic, the inclusion of 5G LAN, and MSI’s suite of quality-of-life features like the EZ release mechanisms and BCLK generator.
However, its drawbacks are significant for the price: a modest discrete VRM design, the older ALC897 audio codec, the absence of high-speed USB (20Gbps/USB4), and only one actively cooled M.2 slot. For a builder crafting a white-themed system who specifically wants 5G LAN, this board presents a viable, if not optimal, option. For the majority seeking the best features or overclocking potential for their money, competing motherboards offer more compelling packages, making the B850 Gaming Plus Max WiFi a niche product whose appeal is heavily dependent on a very specific set of user priorities.
