Intel X99 (unlock bios)
Motherboard, from 2019 2 hardware reports
Memory
Up to 16 GB
4 full-size slots
SSD slots
Coming next
Checked from separate sources
Only 2 machines reported so far, so this answer rests on few examples. Check the label or open the panel before you buy.
Upgradable
Yes. 4 slots, up to 16 GB seen working.
It takes DDR4-2133 full-size sticks (DIMM).
- Slots
- 4 DIMM slots
- Type
- DDR4-2133 288-pin DIMM
- Most seen working
- 16 GB; one machine runs 16 GB
- Firmware says
- 128 GB maximum
- How sure
- 2 of 2 reports show this layout
See 4 GB DDR4-2133 DIMM on AmazonOpens an Amazon search for this exact spec.
Worked out from 2 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 Intel X99 (unlock bios)?
Yes. 4 slots, up to 16 GB seen working. It takes DDR4-2133 full-size sticks (DIMM).
What type of RAM does the Intel X99 (unlock bios) use?
DDR4-2133 full-size sticks (DIMM, 288-pin).