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Black ATX motherboard with grey heatsinks and silver slots, shown without I/O shield

MSI

MSI B450 Tomahawk AMD Motherboard AM4 ATX DDR4

SKU CH-7J9S-4E59V MPN B450

AM4 ATX motherboard with B450 chipset, one PCIe 3.0 x16 slot, one M.2 slot, DDR4 up to 128 GB, USB 3.1 Gen 2 Type-A and LAN, sold as board only without I/O shield

  • CPU Socket TypeAM4
  • ChipsetAMD B450
  • Number of Memory SlotsDDR4
  • Maximum Memory Supported128GB
  • PCI Express 3.0 x161x PCI Express 3.0 x16
  • PCI Express x161
  • AM4 socket ready for compatible processors
  • B450 chipset provides stable platform foundation
  • Four DDR4 slots support up to 128GB memory
  • PCIe 3.0 x16 slot for graphics expansion
  • ATX form factor fits standard desktop cases

Core Platform

The MSI B450 Tomahawk is an ATX motherboard built on the AMD B450 chipset with an AM4 socket. It provides one PCI Express 3.0 x16 slot and a single M.2 connector for expansion. Four DDR4 memory slots support up to 128GB of system memory.

System Builders

This board suits builders assembling a new AM4 system who need a full-size ATX layout and do not require bundled accessories. It is not for buyers who need an I/O shield, SATA cables or a manufacturer warranty in the box. It is also not for builds that require multiple PCIe x16 slots or onboard Wi-Fi.

Memory Capacity

The maximum supported memory is 128GB across four DDR4 slots. This figure determines whether the board can handle the planned workload or if a platform with higher capacity is required.

Highlights

  • AM4 socket ready for compatible processors
  • B450 chipset provides stable platform foundation
  • Four DDR4 slots support up to 128GB memory
  • PCIe 3.0 x16 slot for graphics expansion
  • ATX form factor fits standard desktop cases

Specifications

BrandMSI
ModelB450 Tomahawk
CPU Socket TypeAM4
ChipsetAMD B450
Number of Memory SlotsDDR4
Maximum Memory Supported128GB
PCI Express 3.0 x161x PCI Express 3.0 x16
PCI Express x161
PCI Slots1 x PCI Slot
Back I/O Ports1 x LAN (RJ45) / 1 x USB 3.1 Gen 2 Type-A
RJ451 x RJ45
USB 3.11 x USB 3.1
Form FactorATX

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