ASUS PRIME B450-PLUS
Motherboard, from 2018 101 hardware reports
Memory
Up to 128 GB
4 full-size slots
SSD slots
Coming next
Checked from separate sources
Upgradable
Yes. 4 slots, up to 128 GB seen working.
It takes DDR4-2400 full-size sticks (DIMM).
- Slots
- 4 DIMM slots
- Type
- DDR4-2400 288-pin DIMM
- Most seen working
- 128 GB in two or more machines
- Firmware says
- 128 GB maximum
- How sure
- 101 of 101 reports show this layout
See 32 GB DDR4-2400 DIMM on AmazonOpens an Amazon search for this exact spec.
Worked out from 101 hardware reports of this motherboard. Sources and method. Updated 9 Nov 2026.
4 full-size slots
Illustration Questions
Can I upgrade the RAM in the ASUS PRIME B450-PLUS?
Yes. 4 slots, up to 128 GB seen working. It takes DDR4-2400 full-size sticks (DIMM).
What type of RAM does the ASUS PRIME B450-PLUS use?
DDR4-2400 full-size sticks (DIMM, 288-pin).
How much RAM can the ASUS PRIME B450-PLUS take?
Machines in the reports run up to 128 GB. That matches the 128 GB maximum the firmware reports.
Is this my motherboard?
The model name is printed on the board, usually between the memory slots or near the CPU socket. In Windows, open System Information and look at "BaseBoard Product"; it should read PRIME B450-PLUS.