GIGABYTE Z790 UD AC LGA 1700 ATX Motherboard, vs MSI MAG B850M Mortar WiFi Motherboard, mATX
Updated August 2026 — MSI MAG B850M Mortar WiFi Motherboard, mATX leads on price and performance.
The GIGABYTE Z790 UD AC offers great value for Intel users, while the MSI MAG B850M Mortar WiFi excels in advanced features for AMD enthusiasts.
Why GIGABYTE Z790 UD AC LGA 1700 ATX Motherboard, is better
Price
GIGABYTE is $70 cheaper
Intel Support
Supports multiple Intel generations
Build Quality
Solid build with durable armor
Why MSI MAG B850M Mortar WiFi Motherboard, mATX is better
Performance
Higher memory overclocking capabilities
Connectivity
Includes Wi-Fi 7 and Bluetooth 5.4
Cooling
Superior thermal management features
Overall score
Specifications
| Spec | GIGABYTE Z790 UD AC LGA 1700 ATX Motherboard, | MSI MAG B850M Mortar WiFi Motherboard, mATX |
|---|---|---|
| Processor Support | Intel 14th/13th/12th Gen | AMD Ryzen 9000/8000/7000 |
| Memory Type | DDR5 | DDR5 |
| Max Memory Speed | Up to 6000 MT/s | 8200+ MT/s (OC) |
| PCIe Version | PCIe 5.0 | PCIe 5.0 |
| M.2 Slots | 3 | 3 |
Dimension comparison
Overview of the GIGABYTE Z790 UD AC and MSI MAG B850M Mortar WiFi
The GIGABYTE Z790 UD AC and MSI MAG B850M Mortar WiFi are two formidable motherboards aimed at different processor families: Intel and AMD respectively. The GIGABYTE Z790 UD AC is priced at $149.99, making it about 32% cheaper than the MSI MAG B850M Mortar WiFi, which retails for $219.99. With distinct features catering to their respective processors, each motherboard brings unique strengths to the table.
Processor Compatibility
The GIGABYTE Z790 UD AC supports Intel Core processors from the 14th to the 12th generation, while the MSI MAG B850M Mortar WiFi is designed for AMD Ryzen 9000, 8000, and 7000 processors. This key distinction means that your choice largely depends on the CPU you plan to use. The GIGABYTE's compatibility with multiple generations of Intel's processors could be beneficial for users looking to upgrade their systems over time, whereas the MSI model focuses on the latest AMD offerings, ensuring top-notch performance for current-generation gaming.
Power Design and VRM
In terms of power design, the GIGABYTE Z790 UD AC features a 16+1+1 Twin Hybrid Phases Digital Power Design with 60A DrMOS, emphasizing stability and efficiency for Intel processors. On the other hand, the MSI MAG B850M Mortar WiFi uses a 12 Duet Rail Power System (60A, SPS) VRM, specifically tailored for the AMD B850 chipset. Both motherboards are equipped to handle high-performance workloads, but the GIGABYTE's design may offer enhanced stability for overclocking Intel CPUs, while MSI's power system is optimized for the latest AMD architectures.
Memory Support and Performance
The GIGABYTE Z790 UD AC supports DDR5 memory, allowing for dual-channel configurations with four DIMM slots. This setup can help users achieve higher memory speeds and performance. Conversely, the MSI MAG B850M Mortar WiFi also supports DDR5 memory and is noted for its exceptional overclocking capabilities, boasting speeds of 8200+ MT/s (OC). Both motherboards enable high-performance memory configurations, but the MSI's focus on extreme speeds may appeal more to enthusiasts looking to push their systems to the limits.
Cooling Solutions
Cooling is crucial for maintaining system performance, and both motherboards come equipped with robust thermal management features. The GIGABYTE Z790 UD AC includes fully covered MOSFET heatsinks and a comprehensive thermal design, which can effectively dissipate heat during intense gaming sessions. In contrast, the MSI MAG B850M Mortar WiFi offers premium cooling features such as 7W/mK MOSFET thermal pads and an EZ M.2 Shield Frozr II to prevent thermal throttling. While both options prioritize cooling, the MSI's additional features may provide an advantage for users pushing their hardware to higher performance levels.
Connectivity Options
When it comes to connectivity, the GIGABYTE Z790 UD AC is well-equipped with PCIe 5.0 slots, three NVMe PCIe 4.0 x4 M.2 slots, and USB-C 3.2 ports, providing versatile options for storage and peripherals. The MSI MAG B850M Mortar WiFi, however, takes connectivity a step further with full-speed Wi-Fi 7, Bluetooth 5.4, and 5G LAN, alongside its PCIe 5.0 x16 slot. This makes the MSI a more future-proof option, especially for users who prioritize high-speed wireless connections and advanced networking capabilities.
Build Quality and Design
Both motherboards exhibit solid build quality, with the GIGABYTE Z790 UD AC featuring an ultra-durable armor and a six-layer PCB for added stability. The MSI MAG B850M Mortar WiFi boasts a durable 8-layer PCB with 2oz of thickened copper, designed to support the demands of high-performance gaming. While both motherboards deliver robust designs, the MSI's focus on reinforced components may attract gamers looking for long-lasting reliability.
Price Comparison
The GIGABYTE Z790 UD AC is priced at $149.99, which is considerably lower than the MSI MAG B850M Mortar WiFi at $219.99. This price difference of $70 means the GIGABYTE is approximately 32% more affordable. For those on a budget or those who don’t require the latest features, the GIGABYTE provides a solid option without sacrificing essential performance capabilities.
Which should you buy?
Ultimately, the choice between the GIGABYTE Z790 UD AC and the MSI MAG B850M Mortar WiFi will depend on your specific needs and the processor you intend to use. If you are looking for a budget-friendly option that supports Intel's latest processors and offers great performance, the GIGABYTE Z790 UD AC is an excellent choice. However, if you prefer cutting-edge AMD technology with premium cooling and connectivity options, the MSI MAG B850M Mortar WiFi justifies its higher price with advanced features. Consider your processor preference and budget to make the best decision for your next build.