Built from MSI’s proven MAG lineage, the MAG B850 Tomahawk MAX WIFI II AM5 DDR5 Motherboard ATX is engineered to be the rock-solid foundation for high-performance gaming rigs and creative workstations. Designed for enthusiasts who demand stability, long-term performance and hands-on customization, this board brings flagship-class power delivery, next-generation connectivity and intelligent thermal solutions to the AM5 platform. Ready for AMD Ryzen™ 9000 / 8000 / 7000 Series desktop processors and equipped for DDR5 memory headroom, it’s built to unlock peak system potential while staying DIY-friendly for builders of every level.
Benefits
- High-performance reliability: A robust 14+2+1 digital power phase design with 80A Smart Power Stages and dual 8-pin CPU power connectors delivers the stable, sustained power modern Ryzen processors require under heavy loads and overclocking.
- Future-ready connectivity: Built-in Wi-Fi 7 and a 5G LAN controller plus high-speed USB and PCIe options give you low-latency networking and blistering peripheral throughput for gaming, streaming and content creation.
- Maxed-out memory and storage capacity: Four DDR5 slots supporting up to 256GB and ultra-fast JEDEC/OC speeds paired with four M.2 slots and four SATA 6G ports let you configure massive, responsive storage pools and memory kits for demanding workflows.
- Thermally optimized for nonstop operation: Thickened copper layers, extended heatsinks, high-rating thermal pads and MSI’s EZ M.2 Shield Frozr II protect critical components so you can push performance for longer without thermal throttling.
- Builder-friendly design: Thoughtful DIY features, supplemental PCIe power and a standardized ATX layout simplify installation, upgrades and troubleshooting for first-time and veteran builders alike.
- Feature: Flagship-grade power delivery
- Feature: Comprehensive memory and CPU support
- Feature: Next-generation connectivity and networking
- Feature: Storage and expansion for performance builds
- Feature: Robust cooling and DIY-friendly protection
Key features
The MAG B850 Tomahawk MAX WIFI II uses a 14+2+1 Duet Rail digital power system with 80A Smart Power Stages and dual 8-pin CPU power connectors to provide clean, reliable current to the CPU and memory. Core Boost and Memory Boost circuitry, together with an 8-layer PCB built with 2oz thickened copper and server-grade materials, enable stable overclocking and long-term performance consistency.
Supports AMD Ryzen™ 9000 / 8000 / 7000 Series desktop processors and dual-channel DDR5 memory at JEDEC and extreme OC profiles (DDR5 8400 - 5600 MT/s OC and 5600 - 4800 MT/s JEDEC) across four DIMM slots for up to 256GB of system RAM—ideal for gaming, streaming and professional multitasking.
Integrated Wi-Fi 7 brings the latest wireless performance and lower latency, while the Realtek® 8126VB 5G LAN offers ultra-fast wired networking. High-bandwidth USB options include USB 3.2 Gen 2 Type-C and Type-A ports and support for advanced USB 20Gbps solutions, ensuring fast connection to external drives, capture devices and peripherals.
Expand with confidence: four M.2 slots plus four SATA 6G ports and RAID support for M.2 (RAID 0, RAID 1, RAID 10) let you build hybrid storage arrays tailored to speed or redundancy. Three PCI-E x16 slots—including PCIe 5.0-ready lanes and supplemental PCIe power—support multi-GPU or high-bandwidth accelerator setups and future expansion.
MSI’s Frozr Guard includes extended heatsinks, MOSFET thermal pads rated for 7W/mK, extra choke thermal pads and the EZ M.2 Shield Frozr II to keep temperatures in check. EZ DIY features and thoughtful component placement make installation, cable management and maintenance straightforward, while durable construction provides a metallic-like hardness and exceptional heat dissipation for continuous gaming sessions.
Summary
The MSI MAG B850 Tomahawk MAX WIFI II AM5 DDR5 Motherboard ATX is a balanced, high-performance platform for gamers, creators and enthusiasts who want a build that’s ready for the next generation. With flagship-class power delivery, expansive DDR5 memory support, multiple M.2 bays and RAID capability, plus cutting-edge connectivity—Wi-Fi 7, 5G LAN and high-speed USB—this board combines long-term stability with modern features. Thermals and buildability are addressed with thickened copper PCB layers, advanced cooling solutions and EZ DIY conveniences, making the MAG B850 Tomahawk MAX WIFI II a dependable choice for demanding builds and future upgrades.
| Manufacturer | MSI |
|---|---|
| Manufacturer Part | MAGB850TOMAHAWKMAXII |
| UPC | 824142453995 |
| MB Chipset | AMD B850 |
| MB Socket | AM5 socket |
| Memory Slot | 4 x DDR5 |
| Memory Support | DDR5 8400 - 5600 (OC) MT/s / 5600 - 4800 (JEDEC) MT/s |
| Maximum memory | 256GB |
| Integrated Graphic | Yes |
| Expansion Slot | 3x PCI-E x16 slot |
| Storage interface | 4x M.2, 4x SATA 6G |
| Raid Support | RAID 0, RAID 1 and RAID 10 for M.2 |
| Lan | Realtek® 8126VB 5G LAN |
| WiFi | Yes |
| Onboard Audio | Realtek® ALC4080 Codec |
| USB Type | 3.2 Gen 2 Type-c, 3.2 Gen 2 Type-A |
| Form factor | ATX |
| Form size | 243.84mmx304.8mm |
| Manufacturer Warranty | Limited 3 Years |





