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ASUS ROG Crosshair X870E Dark Hero ATX vs MSI MAG B850M Mortar WiFi Motherboard, mATX

Updated August 2026 — ASUS ROG Crosshair X870E Dark Hero ATX leads on features and overclocking.

The ASUS ROG Crosshair X870E Dark Hero offers superior features and performance, making it the better choice for enthusiasts, while the MSI MAG B850M Mortar provides great value for budget-conscious users.

Why ASUS ROG Crosshair X870E Dark Hero ATX is better

Power Stages

20+2+2 power stages for better stability

Cooling

Advanced thermal design with 3D VC heatsink

Connectivity

More extensive connectivity options including dual USB4

Why MSI MAG B850M Mortar WiFi Motherboard, mATX is better

Price

Significantly cheaper at $219.99

Size

mATX form factor for smaller builds

Value

Solid performance for budget builds

Overall score

ASUS ROG Crosshair X870E Dark Hero ATX
88
MSI MAG B850M Mortar WiFi Motherboard, mATX
75

Specifications

SpecASUS ROG Crosshair X870E Dark Hero ATXMSI MAG B850M Mortar WiFi Motherboard, mATX
Power Stages20+2+212
DDR5 SupportYesYes
PCIe Version5.05.0
M.2 Slots53
Wi-Fi77

Dimension comparison

ASUS ROG Crosshair X870E Dark Hero ATXMSI MAG B850M Mortar WiFi Motherboard, mATX

Overview of the ASUS ROG Crosshair X870E Dark Hero

The ASUS ROG Crosshair X870E Dark Hero is a high-end ATX motherboard designed for advanced computing needs. Priced at $699.99, it offers a robust set of features tailored for enthusiasts and gamers alike. With 20+2+2 power stages and support for AMD Ryzen 9000, 8000, and 7000 series processors, it ensures optimal performance and stability, making it ideal for demanding AI applications.

This motherboard is designed with future-proofing in mind, featuring DDR5 slots, PCIe 5.0, and five M.2 slots equipped with a 3D VC heatsink, which enhances cooling efficiency. The motherboard's generous connectivity options, including dual USB4 Type-C ports and advanced networking capabilities like Wi-Fi 7, further emphasize its premium position in the market.

Overview of the MSI MAG B850M Mortar WiFi

The MSI MAG B850M Mortar WiFi is a competitive mATX motherboard priced at $219.99, making it about 69% cheaper than the ASUS ROG Crosshair. It supports AMD Ryzen 9000, 8000, and 7000 processors and features a 12 Duet Rail Power System (60A, SPS) VRM, ensuring reliable performance for gaming and high-performance computing.

This motherboard is equipped with cutting-edge features such as DDR5 memory support, PCIe 5.0 x16 for graphics cards, and three M.2 connectors for expanded storage options. With built-in Wi-Fi 7 and Bluetooth 5.4, it offers solid connectivity for a variety of devices, catering well to gamers and content creators looking for a balance of performance and value.

Performance Capabilities

When comparing performance capabilities, the ASUS ROG Crosshair X870E Dark Hero leads with its more advanced power delivery system and overclocking features. Its 20+2+2 power stages are designed for exceptional stability under heavy loads, essential for high-end gaming and multitasking scenarios. Additionally, it includes ROG Overclocking Technologies for further enhancements.

In contrast, the MSI MAG B850M Mortar offers a solid performance with its 12 Duet Rail Power System, but it may not match the extreme overclocking potentials of the ASUS motherboard. However, it still supports DDR5 memory speeds of 8200+ MT/s (OC), which is quite impressive for a motherboard in its price range.

Cooling Solutions

Cooling solutions are critical in high-performance motherboards, and here, the ASUS ROG Crosshair X870E excels with its optimized thermal design. It features a 3D VC M.2 heatsink and extensive heatsinks integrated with the I/O cover, providing superior heat dissipation, especially when pushing the limits of performance.

The MSI MAG B850M Mortar also prioritizes cooling, incorporating premium thermal pads and an extended heatsink. Its EZ M.2 Shield Frozr II helps prevent thermal throttling, ensuring consistent performance even under load. However, while it offers solid cooling features, it may not achieve the same level of thermal efficiency as the ASUS model.

Connectivity Options

In terms of connectivity, the ASUS ROG Crosshair X870E Dark Hero outshines its competitor with a comprehensive range of ports. It includes dual USB4 Type-C ports and numerous additional USB ports for various peripherals, catering to users with extensive connectivity needs. The inclusion of Wi-Fi 7 and multiple Ethernet options further enhances its networking capabilities.

On the other hand, the MSI MAG B850M Mortar provides a respectable array of connections, including USB 20G Type-C and 5G LAN. While it is equipped for modern connectivity demands, it lacks the extensive options available on the ASUS motherboard, which might be a consideration for users with demanding setups.

Aesthetic and Design

Aesthetically, the ASUS ROG Crosshair X870E Dark Hero boasts a sleek design complemented by customizable RGB lighting through the Aura Sync feature. This allows users to personalize their builds extensively, making it an attractive choice for gamers who value aesthetics alongside performance.

The MSI MAG B850M Mortar features a more straightforward design, focusing on functionality rather than extensive customization. While it offers a solid build quality, it may not appeal as much to users who prioritize visual flair in their gaming rigs.

Pricing and Value

The ASUS ROG Crosshair X870E Dark Hero, priced at $699.99, represents a significant investment for high-end users seeking top-tier performance and features. Its advanced specifications justify the higher price point, especially for enthusiasts looking to build a future-proof system.

In contrast, the MSI MAG B850M Mortar at $219.99 offers excellent value for those on a budget. It delivers solid performance and essential features suitable for mid-range builds, making it a compelling option for gamers who need performance without breaking the bank. The price difference of about $480 can be a deciding factor for many users.

Which should you buy?

Choosing between the ASUS ROG Crosshair X870E Dark Hero and the MSI MAG B850M Mortar ultimately depends on your specific needs and budget. The ASUS motherboard is ideal for enthusiasts looking for cutting-edge technology, advanced overclocking capabilities, and extensive connectivity options, albeit at a premium price of $699.99.

Conversely, the MSI MAG B850M Mortar is an excellent choice for budget-conscious gamers who still want a reliable and high-performing motherboard for AMD Ryzen processors at a more accessible price of $219.99. In summary, if you prioritize top-of-the-line features and future-proofing, go for the ASUS; if you seek value and solid performance, the MSI is the way to go.