ASUS Prime B840-PLUS WiFi AMD AM5 B840 ATX Motherboard vs ASRock B550 Phantom Gaming 4 AC Supports 3rd Gen AMD AM4 Ryzen™ / Future AMD Ryz
Updated August 2026 — The ASUS Prime B840-PLUS WiFi offers superior features and future-proofing compared to the ASRock B550 Phantom Gaming 4 AC, making it the better choice for performance-oriented users.
The ASUS Prime B840-PLUS WiFi offers superior features and future-proofing compared to the ASRock B550 Phantom Gaming 4 AC, making it the better choice for performance-oriented users.
Why ASUS Prime B840-PLUS WiFi AMD AM5 B840 ATX Motherboard is better
Price
ASUS is more expensive but offers advanced features.
Future-Proofing
Supports AMD AM5 socket for latest processors.
Connectivity
Includes Wi-Fi 6E and multiple PCIe 4.0 slots.
Why ASRock B550 Phantom Gaming 4 AC Supports 3rd Gen AMD AM4 Ryzen™ / Future AMD Ryz is better
Cost
ASRock is significantly cheaper.
Basic Gaming
Adequate for current gaming needs.
Simplicity
Easier for budget builds.
Overall score
Specifications
| Spec | ASUS Prime B840-PLUS WiFi AMD AM5 B840 ATX Motherboard | ASRock B550 Phantom Gaming 4 AC Supports 3rd Gen AMD AM4 Ryzen™ / Future AMD Ryz |
|---|---|---|
| Brand | Asus | ASRock |
| Socket Type | AM5 | AM4 |
| Max RAM | DDR5 | DDR4 |
| PCIe Version | 4.0 | 3.0 |
| Ethernet | 2.5Gb | 1Gb |
Dimension comparison
Price Comparison
When considering price, the ASRock B550 Phantom Gaming 4 AC comes in significantly lower at C$99.99 compared to the ASUS Prime B840-PLUS WiFi, which is priced at C$153.44. This price difference of C$53.45 makes the ASRock motherboard a more budget-friendly option. For those prioritising cost without sacrificing essential features, the ASRock model is an attractive choice. However, the higher price of the ASUS motherboard reflects its advanced capabilities and future-proofing features, appealing to users willing to invest more for enhanced performance.
Compatibility and Future-Proofing
The ASUS Prime B840-PLUS WiFi is designed with the AMD AM5 socket, making it compatible with the latest AMD Ryzen 9000, 8000, and 7000 Series Desktop Processors. This positioning ensures that users can take advantage of cutting-edge technology. In contrast, the ASRock B550 Phantom Gaming 4 AC supports 3rd Gen AMD AM4 Ryzen processors, which may limit its future upgrade potential. While the ASRock motherboard is suitable for current gaming needs, the ASUS option is more forward-looking, providing a more robust platform for future upgrades.
Power Delivery and Design
The ASUS Prime B840-PLUS WiFi features an enhanced power solution with a six-layer PCB, alloy chokes, and durable capacitors, ensuring stable power delivery for demanding applications. In comparison, the ASRock B550 Phantom Gaming 4 AC has an 8 power phase design and Digi Power, which is adequate for most gaming situations but may not match the ASUS model's stability under heavy loads. The ASUS design prioritises longevity and reliability, making it more suitable for users who plan to push their systems to the limits.
Connectivity Options
Connectivity is a strong point for the ASUS Prime B840-PLUS WiFi, which offers ultra-fast options including Wi-Fi 6E, PCIe 4.0 x16 slot, and multiple PCIe 4.0 M.2 slots. This model also includes 2.5Gb Ethernet and a combination of USB 10Gbps Type-A and Type-C ports, catering to a range of devices and high-speed data transfer needs. The ASRock B550 Phantom Gaming 4 AC features one PCIe 4.0 x16 and two PCIe 3.0 x1 slots, along with HDMI graphics output. While it covers the basic connectivity needs, it does not match the extensive options available with the ASUS motherboard.
Cooling Solutions
The ASUS Prime B840-PLUS WiFi is equipped with comprehensive cooling solutions, including VRM and M.2 heatsinks, along with hybrid fan headers and Fan Xpert 2+. This array of cooling features is crucial for maintaining optimal performance during intensive tasks. On the other hand, the ASRock B550 Phantom Gaming 4 AC lacks the same level of cooling sophistication. While it is designed with gamers in mind, it may not provide the same thermal management that enthusiasts would expect from a high-performance motherboard like the ASUS.
Gaming Features
Gaming is at the core of the ASRock B550 Phantom Gaming 4 AC, which is tailored to deliver a robust gaming experience. It boasts an 8 power phase design, which is beneficial for gamers looking for reliable performance. However, the ASUS Prime B840-PLUS WiFi also has gaming capabilities, with features like Aura Sync RGB lighting and a DIY-friendly design that enhances the overall user experience. While both boards cater to gamers, the ASUS offers more advanced features that could appeal to those looking for a comprehensive gaming setup.
Software and User Experience
The ASUS Prime B840-PLUS WiFi includes renowned software options like Armoury Crate, ASUS DriverHub, and ASUS GlideX, enhancing the user experience and system management. This software suite adds value by allowing better control over system settings and performance. In comparison, the ASRock B550 Phantom Gaming 4 AC, while focused on gaming, does not highlight similar software capabilities. Users looking for a more integrated software experience may find the ASUS motherboard more appealing.
Which should you buy?
Choosing between the ASUS Prime B840-PLUS WiFi and the ASRock B550 Phantom Gaming 4 AC ultimately depends on your specific needs and budget. If you're looking for a cost-effective solution to build a gaming PC, the ASRock model offers solid performance at a lower price point of C$99.99. Conversely, if you want a motherboard that is future-proof, has advanced connectivity, superior power delivery, and extensive cooling solutions, the ASUS Prime B840-PLUS WiFi at C$153.44 is the better investment. In essence, for those prioritising longevity and performance, the ASUS is the clear winner, while the ASRock serves well for budget-conscious buyers focused on current gaming needs.
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