MSI's $80 AMD motherboards with DDR4 support swoop in to rescue gamers amid the global RAM crisis — AM4 emerges as the unexpected hero with RAM prices skyrocketing
Source: Tom’s Hardware
Image credit: MSI
Overview
MSI (via Hermitage Akihabara) will launch two new motherboards that use AMD’s last‑generation AM4 socket: the Pro B550M-B and the B550M‑A Pro. While they aren’t aimed at winning beauty contests or topping “best motherboard” lists, they provide a budget‑friendly option for gamers facing a global RAM shortage, as DDR4 remains cheaper than DDR5.
Memory Support
Both boards feature 2 DDR4 DIMM slots, supporting up to 64 GB (2 × 32 GB). Memory speeds depend on the CPU’s integrated memory controller, with support up to DDR4‑4600 and potentially higher on processors with strong IMCs.
Image credit: MSI
Expansion Slots
| Motherboard | PCIe x16 Slot | Additional PCIe Slots | M.2 Slots |
|---|---|---|---|
| Pro B550M-B | 1 × PCIe 4.0 x16 (CPU‑linked) | 1 × PCIe 3.0 x1 | 1 × PCIe 3.0 M.2 (chipset) |
| B550M‑A Pro | 1 × PCIe 4.0 x16 (CPU‑linked) | 1 × PCIe 3.0 x1 | 1 × PCIe 4.0 M.2 (chipset) |
The B550M‑A Pro offers slightly better connectivity with a PCIe 4.0 M.2 slot, while the Pro B550M‑B includes a PCIe 3.0 M.2 slot.
Rear I/O
Both motherboards share a similar rear I/O layout:
- USB: 2 × USB 3.2 Gen 1 (5 Gbps) Type‑A, 6 × USB 2.0
- Display:
- Pro B550M‑B – 1 × DisplayPort 1.2 (replaces DVI‑D)
- B550M‑A Pro – 1 × DVI‑D
- PS/2:
- Pro B550M‑B – 1 × PS/2 port
- B550M‑A Pro – 2 × PS/2 ports
The B550M‑A Pro also includes a DVI‑D port, making it more compatible with older monitors.
Pricing and Availability
- Japan launch (including tax):
- Pro B550M‑B – $89.37
- B550M‑A Pro – $76.58
- Japan launch (excluding tax):
- Pro B550M‑B – $81.25
- B550M‑A Pro – $69.62
The official retail launch is scheduled for February 27. U.S. pricing will be announced shortly after.