ASUS AMD B550 搭載 AM4 対応マザーボード ROG STRIX B550-F GAMING(WI-FI)【ATX】

This article covers ASUS AMD B550 搭載 AM4 対応 マザーボード ROG STRIX B550-F GAMING(WI-FI)【ATX】.

Overview

The ASUS ROG STRIX B550-F GAMING(WI-FI) is an ATX motherboard built around the AMD B550 chipset, designed for Socket AM4 processors. It supports 3rd Gen AMD Ryzen CPUs and brings PCIe 4.0 connectivity to the primary x16 slot and one M.2 slot, making it a solid mid-range choice for gamers and enthusiasts. The board also integrates Intel Wi-Fi 6 AX200 and Bluetooth 5.1, eliminating the need for a separate wireless card.
With a 12+2 phase DrMOS power delivery system, this motherboard can handle Ryzen 7 and even Ryzen 9 processors under sustained loads. The ROG Strix series aesthetic includes addressable RGB headers and Aura Sync support, allowing users to customize lighting across compatible components. The Realtek S1200A codec with ROG SupremeFX technology delivers above-average onboard audio for immersive gaming.
Positioned between the budget B450 and premium X570 options, the ROG STRIX B550-F offers a balanced feature set: PCIe 4.0 where it matters most, robust VRM, and modern connectivity, all at a price point that undercuts X570 boards significantly. It is an excellent fit for builders who want high-end features without paying for unused PCIe 4.0 lanes.

Compatibility Guide

• CPU Socket: AMD Socket AM4. Compatible with 3rd Gen Ryzen (Ryzen 3000/5000 series). A BIOS update may be required for Ryzen 5000 CPUs.
• Memory: 4x DDR4 DIMM slots, up to 128GB. Supports overclocked speeds up to 4400MHz+, though actual stability depends on the CPU's memory controller and RAM kit quality.
• Form Factor: Standard ATX (30.5cm x 24.4cm). Fits most ATX cases.
• Expansion Slots: 1x PCIe 4.0 x16 (CPU-direct), 1x PCIe 3.0 x16 (chipset, x4 mode), 3x PCIe 3.0 x1. Multi-GPU setups are not recommended due to the second slot's bandwidth limitation.
• Storage: 2x M.2 slots (1x PCIe 4.0 x4, 1x PCIe 3.0 x4), 6x SATA 6Gbps ports. Flexible NVMe and SATA SSD combinations.
• Power Connectors: 24-pin main, 8-pin + 4-pin CPU auxiliary. Recommended PSU: 650W or higher depending on the GPU.
• USB: 7x USB 3.2 Gen 2 (10Gbps), 4x USB 2.0. Rear I/O includes 5x Type-A and 1x Type-C USB 3.2 Gen 2.

Product Info

Released in June 2020, the ROG STRIX B550-F GAMING(WI-FI) sits in the mid-to-high-end segment of the B550 lineup. It is priced around ¥21,091 on online retailers as of September 2026, offering strong value for its feature set. Key specifications include a 12+2 phase DrMOS VRM, Intel Wi-Fi 6 AX200 (2x2, 802.11ax), Bluetooth 5.1, Realtek S1200A audio codec with ROG SupremeFX, and comprehensive RGB lighting support. The standard warranty is 3 years from ASUS.

Best Use Cases

• Mid-Range Gaming Builds: Pair this board with a Ryzen 5 5600X or Ryzen 7 5800X and a PCIe 4.0 GPU like the RTX 3060 Ti or RTX 4070 for a well-balanced gaming rig. The single PCIe 4.0 x16 slot is sufficient for one high-end graphics card, and the B550 chipset saves money compared to X570 without sacrificing gaming performance.
• Wi-Fi Dependent Setups: The integrated Wi-Fi 6 AX200 module provides fast wireless connectivity (up to 2.4 Gbps) and Bluetooth 5.1, ideal for users who cannot run Ethernet cables or prefer a cleaner desk setup. No need to buy a separate Wi-Fi card.
• RGB Enthusiasts: With two addressable RGB headers and one standard RGB header, plus Aura Sync support, this motherboard makes it easy to synchronize lighting across fans, RAM, and GPU for a cohesive build aesthetic.
  Who should NOT buy this board?
• Users who need multiple PCIe 4.0 x16 slots (e.g., for multi-GPU or multiple high-bandwidth expansion cards) should opt for an X570 motherboard.
• Budget-conscious builders who only game at 1080p may find a B450 board sufficient, especially with a Ryzen 5 5600 and RTX 3060 combo.

Things to Consider

• BIOS Update Requirement: If you plan to use a Ryzen 5000 series CPU out of the box, the motherboard may need a BIOS update. This board lacks BIOS Flashback, so you will need a compatible Ryzen 3000 CPU to perform the update if the BIOS is old. Check the BIOS version before purchase, especially for used or old stock units.
• Limited PCIe 4.0 Benefit: For gaming, PCIe 4.0 offers minimal real-world gains over PCIe 3.0 for both GPUs and SSDs. The main advantage is faster NVMe SSD sequential speeds, which matter for large file transfers but not for game loading times. If you are on a tight budget, a B450 board may serve you just as well.
• VRM Cooling: While the 12+2 phase VRM is capable, the heatsinks are modest. In a case with poor airflow or when running a high-TDP CPU like the Ryzen 9 5950X, VRM temperatures may rise. Ensure adequate case fan placement.
• Competitor Comparison: Alternatives like the MSI MAG B550 TOMAHAWK and GIGABYTE B550 AORUS PRO offer similar pricing. The ROG STRIX B550-F stands out with its superior onboard audio and integrated Wi-Fi 6, but has fewer M.2 slots and a slightly less powerful VRM than some competitors.

FAQ

Q: Can I use a Ryzen 7