MSI · Motherboard

MSI MAG B550 Tomahawk

B550 · AM4 · ATX · DDR4

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Chipset B550
Form factor ATX
Memory slots 4
Max memory 128 GB
Socket AM4
Memory type DDR4

MSI MAG B550 Tomahawk is an ATX and B550 chipset motherboard for AM4 processors and DDR4 memory.

Socket: AM4

Specifications

Key specs

Chipset: B550
Form factor: ATX
Memory slots: 4
Max memory: 128 GB
Socket: AM4
Memory type: DDR4
Part number: MAG B550 TOMAHAWK
EAN / UPC: 0824142217627

Processor

Processor manufacturer: AMD
Processor socket: Socket AM4
Compatible processor series: AMD Ryzen 3000 Series
Maximum number of SMP processors: 1
Supported processor sockets: Socket AM4

Memory

Supported memory types: DDR4-SDRAM
Number of memory slots: 4
Memory slots type: DIMM
Memory channels: Dual-channel
ECC сompatibility: ECC & Non-ECC
Supported memory clock speeds: 1866,2133,2400,2667,2800,2933,3000,3066,3200,3466,3600,3733,3866,4000,4133,4266,4400,4533,4600,4733,5100 MHz
Maximum internal memory: 128 GB
Unbuffered memory: Yes

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Storage controllers

Supported storage drive types: HDD & SSD
Supported storage drive interfaces: SATA III
RAID support: Yes
RAID levels: 0, 1, 10

Graphics

Maximum graphics card memory: 16000 MB
Parallel processing technology support: 2-Way CrossFireX
Maximum resolution: 4096 x 2160 pixels

Internal I/O

USB 2.0 connectors: 2
USB 3.2 Gen 1 (3.1 Gen 1) connectors: 1
Number of SATA III connectors: 6
Front panel audio connector: Yes
ATX Power connector (24-pin): Yes
CPU fan connector: Yes
Number of chassis fan connectors: 6
Chassis intrusion connector: Yes
TPM connector: Yes
12V power connector: Yes
RGB LED pin header: Yes

Rear panel I/O ports

USB 2.0 ports quantity: 2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity: 2
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity: 1
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity: 1
Ethernet LAN (RJ-45) ports: 2
PS/2 ports quantity: 1
HDMI ports quantity: 1
DisplayPorts quantity: 1
S/PDIF out port: Yes
Digital audio optical out: 1

Network

Ethernet LAN: Yes
Ethernet interface type: 2.5 Gigabit Ethernet, Gigabit Ethernet
LAN controller: Realtek RTL8111H, Realtek RTL8125B

Features

Motherboard chipset: AMD B550
Audio chip: Realtek ALC1200
Audio output channels: 7.1 channels
Product colour: Black
Component for: PC
Motherboard form factor: ATX
Motherboard chipset family: AMD
Number of mounting holes: 9
Windows operating systems supported: Windows 10 x64

Expansion slots

PCI Express x1 (Gen 3.x) slots: 2
PCI Express x16 (Gen 3.x) slots: 1
PCI Express x16 (Gen 4.x) slots: 1
Number of M.2 (M) slots: 2

BIOS

BIOS type: UEFI AMI
Clear CMOS jumper: Yes

Weight & dimensions

Width: 305 mm
Depth: 244 mm
Height: 86 mm

Other features

Weight: 1 kg

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Compatible processors

AM4 socket

AMD Ryzen 5 56006 cores · 12 threads
AMD Ryzen 5 55006 cores · 12 threads
AMD Ryzen 5 5600G6 cores · 12 threads
AMD Ryzen 7 5700X8 cores · 16 threads
AMD Ryzen 5 5600X6 cores · 12 threads
AMD Ryzen 5 5500F6 cores · 12 threads
AMD Ryzen 5 5600F6 cores · 12 threads
AMD Ryzen 5 5600T6 cores · 12 threads

Compatible memory

DDR4

Kingston FURY Beast 8GB (1x8) DDR4-3200 CL168 GB (1x8) · DDR4
Kingston FURY Beast 16GB (2x8) DDR4-3200 CL1616 GB (2x8) · DDR4
Kingston 32GB 3200MT/s DDR4 CL16 DIMM (Kit of 2) 1Gx8 FURY Beast RGB32 GB (2x16) · DDR4
VeloxStor 7004-DDR, 8 GB, 1 x 8 GB, DDR4, 3200 MT/s, 288-pin DIMM8 GB (1x8) · DDR4
VeloxStor 7005-DDR, 16 GB, 1 x 16 GB, DDR4, 3200 MT/s, 288-pin DIMM16 GB (1x16) · DDR4
VeloxStor 7006-DDR, 32 GB, 1 x 32 GB, DDR4, 3200 MT/s, 288-pin DIMM32 GB (1x32) · DDR4
VeloxStor 7007-DDR, 8 GB, 1 x 8 GB, DDR4, 3200 MT/s, 288-pin DIMM8 GB (1x8) · DDR4
VeloxStor 7008-DDR, 16 GB, 1 x 16 GB, DDR4, 3200 MT/s, 288-pin DIMM16 GB (1x16) · DDR4

About this product

Conquer the Battlefield The MAG series was born through rigorous quality testing and designed to be a symbol of sturdiness and durability. Focused on providing the best user experience, the MAG series has a simple installation process coupled with a friendly user interface making it the best choice for entry level gamers.

PREMIUM HARDWARE DESIGN

With years of experience, MSI is no stranger to building high-performance motherboards. Our R&D and engineering teams have reviewed countless designs, evaluated a wide selection of high quality components, and developed products for reliability even under extreme conditions.

THERMAL SOLUTION FOR MORE CORES AND HIGHER PERFORMANCE

With more cores’ processors, thermal and power design is more important to make sure the temperature keeps lower. MSI extended PWM heatsink and enhanced circuit design ensures even high-end CPU to run in full speed with MSI motherboards.

M.2 SHIELD FROZR

World’s fastest SSDs can start to lower performance when getting hot.

User manual (PDF) · Datasheet (PDF)

MAG B550 Tomahawk vs similar motherboards

	MSI MAG B550 Tomahawk	MSI PRO B550-S	MSI B550 GAMING	MSI PRO B550M-P
Chipset	B550	B550	B550	B550
Form factor	ATX	ATX	ATX	ATX
Memory slots	4	4	4	4
Max memory	128 GB	128 GB	128 GB	128 GB
Socket	AM4	AM4	AM4	AM4
Memory type	DDR4	DDR4	DDR4	DDR4
Released	—	2026	2026	2026