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ATX motherboard with black PCB and silver heatsinks

MSI

MSI B350 TOMAHAWK AMD motherboard Socket AM4 DDR4 64GB

SKU CH-JB5K-G0RMV

ATX board with AM4 socket for Ryzen CPUs, dual-channel DDR4 up to 3200 MHz, 64 GB maximum memory, one PCIe 3.0 x16 slot, M.2 plus four SATA III ports, Realtek ALC892 7.1 audio and Gigabit LAN

  • ProcessorAMD first and second generation AMD Ryzen/Ryzen with Radeon
  • ChipsetAMD B350
  • CPU socketSocket AM4
  • Supported memorySupports dual-channel DDR4 1866/2133/2400/2667 (OC)/2933 (OC
  • Max supported RAM64 GB
  • PCI slots1 PCIe 3.0 x16 slot (PCI_E2) - Support x 16 speed mode RYZEN
  • Socket AM4 supports first and second generation Ryzen processors
  • Dual-channel DDR4 up to 3200 MHz OC with 64 GB maximum capacity
  • PCIe 3.0 x16 slot runs at x16 speed with Ryzen series CPUs
  • Realtek ALC892 codec delivers 7.1 channel high-definition audio
  • Realtek 8111H provides Gigabit LAN connectivity

Socket AM4 platform for Ryzen builders

This motherboard fits AMD Socket AM4 processors including first and second generation Ryzen and Ryzen with Radeon Vega graphics. It uses the AMD B350 chipset and is aimed at builders assembling a mid-range desktop on an ATX form factor.

DDR4 memory limits and PCIe lane distribution

Dual-channel DDR4 runs at 1866, 2133 or 2400 MHz natively and can be overclocked to 2667, 2933 or 3200 MHz up to a total of 64GB. A single PCIe 3.0 x16 slot operates at x16 with Ryzen CPUs and x8 with 7th generation A-series or Athlon chips, while a second x16 physical slot runs at x4 and two x1 slots provide basic expansion.

ATX build with SATA storage and gigabit LAN

The board measures 23.6 by 20.0 cm and carries four SATA III ports plus one M.2 interface for storage. Rear I/O supplies four USB 3.1 Gen1 ports and six USB 2.0 ports. Audio uses a Realtek ALC892 codec for 7.1 channel output and networking is handled by a Realtek 8111H gigabit controller.

How it compares

Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.

Price $65.99
Cheaper than about 87% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameMSI
Product lineMSI B350 TOMAHAWK
Model nameMSI B350 TOMAHAWK
Processor
ProcessorAMD first and second generation AMD Ryzen/Ryzen with Radeon Vega graphics card processors and AMD A series/Ryzen processors with AM4 pins
CPU socketSocket AM4
ChipsetAMD B350
Memory
Supported memorySupports dual-channel DDR4 1866/2133/2400/2667 (OC)/2933 (OC)/3200 (OC) MHz memory
Max supported RAM64 GB
Storage
SATA and RAID support1XM.2 interface, 4xSATA III interface
Audio & video
Audio chipRealtek ALC892 decoding chip
- 7.1 channel high-quality sound effects
Connectivity
Ethernet controller1 Realtek 8111H Gigabit network interface card
Ports & slots
Onboard USB headersAMD B350 chipset
- 4 USB 3.1 Gen1 (SuperSpeed USB) ports are provided via the onboard USB 3.1 Gen1 port
- 6 USB 2.0 (High-speed USB) ports (2 Type-A connections, ports on the backplane, 4 provided via onboard USB 2.0 ports)
AMD RYZEN series processors/7th generation A series/Athlon processors
- 4 USB 3.1 Gen1 (SuperSpeed USB) ports (3 Type-A ports and 1 Type-C port on the back panel)

Questions about this item

Should I pick the 16 GB or 64 GB memory option for this board?

The board supports up to 64 GB of DDR4 across two slots, so the 64 GB figure is the ceiling you can install.

What does the 3200 MHz DDR4 rating mean once the board is in a real machine?

3200 MHz is an overclocked speed; the board runs DDR4 at 2133 MHz by default and reaches 3200 MHz only with a Ryzen processor and manual tuning.

How does the PCIe 3.0 x16 slot limit graphics performance in practice?

The primary slot runs at PCIe 3.0 x16 with Ryzen CPUs and drops to x8 with 7th-generation A-series or Athlon chips, capping bandwidth for those processors.

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