Updated: 03 Apr 2026

10 Best micro atx am4 motherboards of 2026

Updated: 03 Apr 2026

#1

Best Choice

ASUS ROG Strix B550-A Gaming, AMD AM4, ATX, 128GB DDR4, 4DIMM, DP, HDMI, PCIE

9.7

ASUS

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Main highlights

Smooth networking: Intel 2.5Gb Ethernet with ASUS LANGuard

Best gaming connectivity: PCIe 4.0-ready, dual M.2, USB 3.2 Gen 2 Type-C plus HDMI 2.1 and DisplayPort 1.2 output support

AMD AM4 socket: Ready for Ryzen 5000 Series/ 4000 G-Series/ 3000 Series Desktop Processors
#2

Best Value

ASUS TUF B550M-PLUS Gaming Motherboard, AMD, AM4, Micro-ATX, 128GB DDR4, 4 DIMM

9.6

ASUS

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Main highlights

Made for online gaming: 2.5 Gb Ethernet, TUF LANGuard and TurboLAN technology

Enhanced power solution: 8+2 DrMOS power stages, ProCool connector, military-grade TUF components, and Digi+ VRM for maximum durability

Comprehensive cooling: VRM heatsinks, PCH fanless heatsink, M.2 heatsink, hybrid fan headers and Fan Xpert 2+ utility
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#3

GIGABYTE B550M K Motherboard, Supports AMD AM4 Ryzen 5000 Processors, Micro-ATX, DDR4, Dual M.2, SATA 6Gb/s, Realtek GbE LAN, PCIe 4.0

9.3

GIGABYTE

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Main highlights

Sturdy Power Design: 4 plus 2 Phases Digital Twin Power Design with Low RDS(on) MOSFETs

DDR4 Compatible: Dual Channel ECC or Non-ECC Unbuffered DDR4, 4 DIMMs

AMD AM4 Socket: Supports AMD Ryzen 5000 Series or Ryzen 5000 G-Series or Ryzen 4000 G-Series and Ryzen 3000 Series Processors
#4

MSI AM4 MicroATX B450M-A PRO MAX II Motherboard

9.2

MSI

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Main highlights

Turbo M.2: Running at PCI-E Gen3 x4 maximizes performance for NVMe based SSDs

Supports DDR4 Memory, up to 4133 (OC) MHz

Supports AMD Ryzen 5000, 4000, 3000, 2000, and 1000 Series desktop processors and Athlon with Radeon Vega Graphics desktop processors
#5

ASUS Prime B550M-A WiFi II AMD AM4 (3rd Gen Ryzen™) Micro ATX Motherboard (PCIe 4.0, WiFi 6, ECC Memory, 1Gb LAN, HDMI 2.1/D-Sub, 4K@60HZ, Addressable Gen 2 RGB Header and Aura Sync)

9.1

ASUS

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Main highlights

Ultrafast Connectivity: 1x PCIe 4.0 x16 SafeSlot, WiFi 6 (802.11ax), 1Gb LAN, dual M.2 slots (NVMe SSD)—one with PCIe 4.0 x4 connectivity, USB 3.2 Gen 2 Type-A , HDMI 2.1 (4K@60HZ), D-Sub & DVI

Comprehensive Cooling: VRM heatsink, PCH heatsink, hybrid fan headers and Fan Xpert 2 utility

AMD AM4 Socket and PCIe 4.0: The perfect pairing for 3rd Gen AMD Ryzen CPUs
#6

GIGABYTE B550M AORUS Elite AX (AM4/ AMD/ B550/ Micro ATX/Single M.2/ SATA 6Gb/s/USB 3.2 Gen 1/ Realtek GbE LAN/PCIe 4.0/ Motherboard)

9.0

GIGABYTE

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Main highlights

Enhanced Power Solution: 5 plus3 Phases Pure Digital VRM Solution with Low RDS(on) MOSFETs for steady power delivery.

Advanced Thermal Armor: Enlarged VRM heatsinks for better heat dissipation. Pre-Installed I/O Armor for quicker PC DIY assembly.

AMD Socket AM4: Ready to support AMD Ryzen 5000 / Ryzen 4000 / Ryzen 3000 Series processors.
#7

GIGABYTE B550M DS3H AC R2 AMD AM4 Motherboard, Micro-ATX, DDR4, Dual M.2, SATA 6Gb/s, WIFI5, Realtek GbE LAN, PCIe 4.0

8.7

GIGABYTE

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Main highlights

Dual Channel DDR4：4*DIMMs

Digital 5+3 phases VRM solution

AMD Socket AM4：Supports AMD Ryzen 5000 / 4000 / 3000 Series Processors
#8

ASUS PRIME AMD Ryzen AM4 Micro ATX Gaming Motherboard, DDR4, B550M-A

8.5

ASUS

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Main highlights

Ultrafast connectivity: Dual M.2, PCIe 4.0, 1 Gb Ethernet, USB 3.2 Gen 2 Type-A

Comprehensive cooling: VRM heatsink, PCH heatsink and Fan Expert 2+

AMD AM4 socket: Ready for 3rd Gen AMD Ryzen processors
#9

ASUS TUF Gaming B550M-PLUS (Wi-Fi), AMD B550 (Ryzen AM4) Micro ATX Motherboard (PCIe 4.0, Dual M.2, 10 DrMOS, DDR4, Intel WiFi 6, 2.5 Gb Ethernet, HDMI, DisplayPort, USB 3.2 Gen 2 Type-A and Type-C

8.4

ASUS

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Main highlights

Enhanced power solution: 8+2 DrMOS power stages, ProCool connector, military-grade TUF components, and DIGI+ VRM for maximum durability

Comprehensive cooling: VRM heatsinks, PCH fanless heatsink, M.2 heatsink, hybrid fan headers and Fan Xpert 2+ utility

AMD AM4 socket: Ready for Ryzen 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series Desktop Processors
#10

GIGABYTE A520M K Micro ATX DDR 4 (Rev. 1.0) Ultra Durable AMD Motherboard with Gbe LAN with Bandwidth Management, Pcie 3.0 X4 M.2, Smart Fan 5, Anti-Sulfur Resistors Design

8.3

GIGABYTE

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Main highlights

Supports AMD Ryzen 5000 Series/ Ryzen 5000 G-Series/ Ryzen 4000 G-Series and Ryzen 3000 Series Processors

PCIe Gen3 x4 M.2 with PCIe NVMe & SATA mode support

Dual Channel ECC/ Non-ECC Unbuffered DDR4, 2 DIMMs