Gigabyte X99P-SLI-CF
Motherboard, from 2016 2 hardware reports
Memory

Up to 64 GB
8 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. 8 slots, up to 64 GB seen working.
It takes DDR4-2133 full-size sticks (DIMM).
- Slots
- 8 DIMM slots
- Type
- DDR4-2133 288-pin DIMM
- Most seen working
- 64 GB in two or more machines
- Firmware says
- 256 GB maximum (often wrong, so we show what machines run)
- How sure
- 2 of 2 reports show this layout
See 8 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.
8 full-size slots
Illustration Questions
Can I upgrade the RAM in the Gigabyte X99P-SLI-CF?
Yes. 8 slots, up to 64 GB seen working. It takes DDR4-2133 full-size sticks (DIMM).
What type of RAM does the Gigabyte X99P-SLI-CF use?
DDR4-2133 full-size sticks (DIMM, 288-pin).
How much RAM can the Gigabyte X99P-SLI-CF take?
Machines in the reports run up to 64 GB. The firmware reports a maximum of 256 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 X99P-SLI-CF.