Intel X99H
Motherboard, from 2021 13 hardware reports
Memory
Up to 32 GB
24 full-size slots
SSD slots
Coming next
Checked from separate sources
Upgradable
Yes. 24 slots, up to 32 GB seen working.
It takes DDR4-1866 full-size sticks (DIMM).
- Slots
- 24 DIMM slots
- Type
- DDR4-1866 288-pin DIMM
- Most seen working
- 32 GB in two or more machines; one machine runs 64 GB
- Firmware says
- 384 GB maximum (often wrong, so we show what machines run)
- How sure
- 12 of 13 reports show this layout
See 8 GB DDR4-1866 DIMM on AmazonOpens an Amazon search for this exact spec.
Worked out from 13 hardware reports of this motherboard. Sources and method. Updated 9 Nov 2026.
24 full-size slots
Illustration Questions
Can I upgrade the RAM in the Intel X99H?
Yes. 24 slots, up to 32 GB seen working. It takes DDR4-1866 full-size sticks (DIMM).
What type of RAM does the Intel X99H use?
DDR4-1866 full-size sticks (DIMM, 288-pin).
How much RAM can the Intel X99H take?
Machines in the reports run up to 32 GB, and one runs 64 GB. The firmware reports a maximum of 384 GB, a figure that is often wrong.
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 X99H.