ASRock K10N78D
Motherboard, from 2009 10 hardware reports
Memory

Up to 8 GB
4 full-size slots
SSD slots
Coming next
Checked from separate sources
Upgradable
Yes. 4 slots, up to 8 GB seen working.
It takes DDR2-400 full-size sticks (DIMM).
- Slots
- 4 DIMM slots
- Type
- DDR2-400 240-pin DIMM
- Most seen working
- 8 GB in two or more machines
- Firmware says
- 8 GB maximum
- How sure
- 10 of 10 reports show this layout
See 8 GB DDR2-400 DIMM on AmazonOpens an Amazon search for this exact spec.
Worked out from 10 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 ASRock K10N78D?
Yes. 4 slots, up to 8 GB seen working. It takes DDR2-400 full-size sticks (DIMM).
What type of RAM does the ASRock K10N78D use?
DDR2-400 full-size sticks (DIMM, 240-pin).
How much RAM can the ASRock K10N78D take?
Machines in the reports run up to 8 GB. That matches the 8 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 K10N78D.