ASRock B450M-HDV R4.0 AMD B450 AM4 Socket Ryzen 2000 - vs MSI MAG B850M Mortar WiFi Motherboard, mATX
Updated August 2026 — MSI MAG B850M Mortar WiFi Motherboard, mATX leads on cooling and connectivity.
The MSI MAG B850M Mortar WiFi offers superior features and performance for modern builds, while the ASRock B450M-HDV R4.0 is a budget-friendly option for older systems.
Why ASRock B450M-HDV R4.0 AMD B450 AM4 Socket Ryzen 2000 - is better
Price
B450M-HDV is significantly cheaper at $72.47.
Compatibility
Supports a wider range of older AMD processors.
Basic Features
Adequate for basic computing needs.
Why MSI MAG B850M Mortar WiFi Motherboard, mATX is better
Performance
Supports the latest Ryzen 9000 series processors.
Memory
Utilizes DDR5 memory for higher speeds.
Connectivity
Includes Wi-Fi 7 and advanced networking options.
Overall score
Specifications
| Spec | ASRock B450M-HDV R4.0 AMD B450 AM4 Socket Ryzen 2000 - | MSI MAG B850M Mortar WiFi Motherboard, mATX |
|---|---|---|
| Processor Support | Ryzen 2000-5000 | Ryzen 7000-9000 |
| Memory Type | DDR4 | DDR5 |
| PCIe Version | 3.0 | 5.0 |
| M.2 Slots | 1 | 3 |
| Audio | 7.1 CH | Audio Boost 5 |
Dimension comparison
Overview of Both Motherboards
The B450M-HDV R4.0 by ASRock is priced at $72.47, while the MSI MAG B850M Mortar WiFi costs $219.99, making the ASRock model about 67% cheaper. Both motherboards cater to different generations of AMD processors and present unique features that appeal to distinct user needs. The B450M-HDV is focused on supporting AMD Ryzen 2000 to 5000 processors, while the MAG B850M is designed for the newer Ryzen 7000, 8000, and 9000 processors, suggesting a significant technological gap between the two models.
Processor Compatibility
The B450M-HDV R4.0 supports a wide range of AMD processors from the Ryzen 2000 to 5000 series, making it suitable for budget builds and older systems. In contrast, the MSI MAG B850M Mortar WiFi is geared towards the latest Ryzen 9000, 8000, and 7000 processors, which are designed for high-performance tasks. This compatibility means that the MAG B850M is better suited for users looking to build a cutting-edge gaming rig or workstation, while the B450M-HDV may appeal to those looking to upgrade existing setups without the need for the latest hardware.
Memory Support
When it comes to memory, the B450M-HDV R4.0 supports DDR4 3200+(OC) memory, allowing for a maximum of 64GB. On the other hand, the MAG B850M utilizes DDR5 memory, enabling extreme overclocking speeds of 8200+ MT/s (OC) and supporting up to 128GB. This difference in memory technology highlights the MAG B850M's potential for future-proofing, especially for applications that require substantial memory bandwidth, such as gaming and video editing.
Expansion Slots and Connectivity
The B450M-HDV R4.0 features one PCIe 3.0 x16 and one PCIe 2.0 x1 slot, providing basic expansion capabilities for users. In contrast, the MAG B850M boasts a PCIe 5.0 x16 slot, which allows for significantly higher data transfer rates and future-proofing for high-end graphics cards. Additionally, it supports multiple M.2 Gen5 storage options, further enhancing the motherboard's performance and versatility. This difference is crucial for gamers and professionals who require fast data access and high-speed graphics.
Cooling Features
Cooling is another area where the two motherboards differ significantly. The B450M-HDV R4.0 offers basic cooling options with a simple heatsink configuration. However, the MAG B850M is equipped with advanced cooling technologies, including a 12 Duet Rail Power System (60A, SPS) VRM and multiple thermal pads designed to manage heat effectively. The inclusion of features like EZ M.2 Shield Frozr II prevents thermal throttling, making the MAG B850M a better choice for high-performance builds that demand efficient cooling solutions.
Networking Capabilities
Networking options are markedly different between the two models. The B450M-HDV R4.0 includes a Realtek Gigabit LAN for wired connections, which is adequate for everyday use. In contrast, the MAG B850M features a Wi-Fi 7 module with Bluetooth 5.4 and Realtek 5G LAN, providing a more robust and versatile networking experience. This modern connectivity is essential for gamers and content creators who depend on fast and reliable internet connections.
Audio Performance
Audio capabilities are another aspect where the two motherboards diverge. The B450M-HDV R4.0 supports 7.1 CH HD audio via Realtek ALC887/897 codecs, delivering decent sound quality for everyday tasks. The MAG B850M, however, elevates audio performance with Audio Boost 5 technology, which enhances sound quality for gaming and multimedia. This makes the MAG B850M a more appealing option for users prioritizing an immersive audio experience.
Which should you buy?
Choosing between the B450M-HDV R4.0 and the MSI MAG B850M Mortar WiFi ultimately depends on your specific needs and budget. The B450M-HDV is a solid choice for those looking for a cost-effective solution for older AMD processors, priced at $72.47. However, if you're aiming for a high-performance build with the latest technology and future-proofing in mind, the MAG B850M, despite its higher price of $219.99, provides advanced features, superior cooling, and enhanced connectivity. Therefore, if your focus is on gaming or heavy tasks, the MAG B850M is the recommended option.

