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MSI MAG B850M Mortar WiFi Motherboard, mATX vs NZXT N9 X870E - AMD X870E AM5 ATX Gaming

Updated August 2026 — NZXT N9 X870E - AMD X870E AM5 ATX Gaming leads on performance and cooling.

The MSI MAG B850M Mortar WiFi offers great value for budget-conscious gamers, while the NZXT N9 X870E provides superior performance and features for those willing to spend more.

Why MSI MAG B850M Mortar WiFi Motherboard, mATX is better

Price

MSI is significantly cheaper at $219.99.

Size

MSI is mATX, which fits smaller cases.

Basic Features

MSI has essential features for budget builds.

Why NZXT N9 X870E - AMD X870E AM5 ATX Gaming is better

Performance

NZXT has a superior power phase design.

Cooling

NZXT includes advanced thermal solutions.

Connectivity

NZXT offers USB 4 for faster data transfer.

Overall score

MSI MAG B850M Mortar WiFi Motherboard, mATX
75
NZXT N9 X870E - AMD X870E AM5 ATX Gaming
90

Specifications

SpecMSI MAG B850M Mortar WiFi Motherboard, mATXNZXT N9 X870E - AMD X870E AM5 ATX Gaming
SocketAM5AM5
RAM SupportDDR5 8200+DDR5 8000+
PCIe Slots1 x PCIe 5.01 x PCIe 5.0 + 1 x PCIe 3.0
M.2 Slots34
Wi-FiWi-Fi 7Wi-Fi 7

Dimension comparison

MSI MAG B850M Mortar WiFi Motherboard, mATXNZXT N9 X870E - AMD X870E AM5 ATX Gaming

Overview of the MSI MAG B850M Mortar WiFi Motherboard

The MSI MAG B850M Mortar WiFi Motherboard is designed for gamers seeking high performance on a budget, with a current price of $219.99. This mATX motherboard supports AMD Ryzen 9000, 8000, and 7000 processors and is built with a robust 12 Duet Rail Power System (60A, SPS) VRM. It features advanced cooling solutions and a variety of connectivity options, making it a solid choice for gamers looking to maximize their systems without breaking the bank.

The motherboard's support for DDR5 memory with speeds of 8200+ MT/s (overclocked) and PCIe 5.0 x16 slot ensures that users can take full advantage of the latest technology. Additionally, the inclusion of Wi-Fi 7 and 5GbE LAN further enhances its appeal for those who prioritize connectivity and speed in their gaming setups.

Overview of the NZXT N9 X870E Motherboard

The NZXT N9 X870E is a premium ATX gaming motherboard priced at $499.99, targeting users who demand high-end features and performance. It supports the same AMD Ryzen series processors as the MSI motherboard but is equipped with a more advanced 20+2+1 power phase design featuring 110A Smart Power Stages. This ensures stable power delivery even during intense gaming sessions or overclocking.

This motherboard stands out with its four M.2 slots, including one PCIe 5.0 and three PCIe 4.0, providing ample options for ultra-fast storage solutions. Furthermore, it boasts advanced cooling solutions with a VRM heatsink array and dual PWM fans, ensuring optimal thermal performance during heavy usage. With USB 4 connectivity and customizable RGB lighting, it caters to gamers looking for both aesthetics and performance.

Performance Comparison

In terms of performance, the MSI MAG B850M Mortar WiFi is built to handle high-performance tasks with its 60A VRM, which is optimal for gaming and general usage. The motherboard supports overclocking DDR5 memory speeds, allowing for enhanced multitasking capabilities. However, the NZXT N9 X870E takes performance a step further with its superior 20+2+1 power phase design, which allows for more stable and efficient power management, especially during overclocking.

The MSI motherboard’s PCIe 5.0 x16 slot offers cutting-edge graphics card support, while the NZXT’s combination of PCIe 5.0 and PCIe 3.0 slots gives users additional flexibility for expansion. With both motherboards supporting high-speed DDR5 RAM, the NZXT offers a slight edge in terms of stability and overclocking potential due to its enhanced power delivery system.

Cooling Solutions

Cooling is a critical aspect of motherboard performance, especially for gaming. The MSI MAG B850M Mortar WiFi incorporates effective cooling features, including 7W/mK MOSFET thermal pads and an extended heatsink. These features help maintain optimal temperatures during intense gaming sessions.

Conversely, the NZXT N9 X870E is equipped with an advanced thermal solution that includes a dedicated VRM heatsink array and dual PWM fans, which provide superior cooling capabilities. Additionally, the four dedicated M.2 heatsinks ensure that storage components remain cool, preventing thermal throttling. As a result, while both motherboards have commendable cooling systems, the NZXT offers more comprehensive thermal management features.

Connectivity Options

The MSI MAG B850M Mortar WiFi is well-equipped with modern connectivity features, including Wi-Fi 7 and Bluetooth 5.4, along with USB 20G Type-C ports. This makes it a versatile choice for gamers who require high-speed internet and fast peripheral connections. The inclusion of 5Gb LAN also enhances wired network performance.

On the other hand, the NZXT N9 X870E takes connectivity to a new level with USB 4 (40 Gbps), which offers significantly faster data transfer rates compared to the MSI's USB 20G. In addition, it features Wi-Fi 7 and 5GbE for top-tier networking performance. Overall, while both motherboards provide excellent connectivity options, the NZXT's offerings are more advanced and future-proof.

Aesthetics and Build Quality

Aesthetics can often be a deciding factor for many gamers, and the MSI MAG B850M Mortar WiFi maintains a robust design with a durable 8-layer PCB and premium components. Its sleek layout is designed for easy assembly, catering to gamers who appreciate a clean build.

In contrast, the NZXT N9 X870E features a full-metal cover that not only enhances its visual appeal but also adds to its overall durability. The onboard customizable RGB lighting offers gamers the opportunity to personalize their setup, making it visually striking. For users who prioritize aesthetics alongside performance, the NZXT motherboard offers a more polished and modern look.

Price Comparison

The MSI MAG B850M Mortar WiFi is priced at $219.99, making it an excellent choice for budget-conscious gamers looking for solid performance without overspending. In comparison, the NZXT N9 X870E is significantly more expensive at $499.99, about 127% higher than the MSI option.

This price difference reflects the additional features and advanced technology found in the NZXT motherboard. While the MSI offers great value for money, users willing to invest more for enhanced performance and aesthetics may find the NZXT worth the extra cost.

Which should you buy?

Choosing between the MSI MAG B850M Mortar WiFi and the NZXT N9 X870E ultimately depends on your specific needs and budget. If you are a gamer looking for a reliable, high-performance motherboard without breaking the bank, the MSI MAG B850M Mortar WiFi is an excellent choice with its solid features and competitive price of $219.99.

However, if you are willing to invest more for superior performance, advanced cooling, and enhanced aesthetics, the NZXT N9 X870E at $499.99 could be the better option. Its advanced power delivery system and extensive connectivity options make it a compelling choice for high-end gaming setups.