ASRock X299 Steel Legend
Motherboard, from 2019 2 hardware reports
Memory
Up to 128 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 128 GB seen working.
It takes DDR4-3200 full-size sticks (DIMM).
- Slots
- 8 DIMM slots
- Type
- DDR4-3200 288-pin DIMM
- Most seen working
- 128 GB; one machine runs 128 GB
- Firmware says
- 3072 GB maximum
- How sure
- 2 of 2 reports show this layout
See 16 GB DDR4-3200 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 ASRock X299 Steel Legend?
Yes. 8 slots, up to 128 GB seen working. It takes DDR4-3200 full-size sticks (DIMM).
What type of RAM does the ASRock X299 Steel Legend use?
DDR4-3200 full-size sticks (DIMM, 288-pin).
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 X299 Steel Legend.