Dell Precision M6400
Laptop, from 2009 11 hardware reports
Memory
Up to 16 GB
4 laptop-size slots
SSD and charger
Coming next
Checked from separate sources
Upgradable
Yes. 4 slots, up to 16 GB seen working.
It takes DDR3-1066 laptop-size sticks (SO-DIMM).
- Slots
- 4 SO-DIMM slots
- Type
- DDR3-1066 204-pin SO-DIMM
- Most seen working
- 16 GB in two or more machines
- Firmware says
- 16 GB maximum
- How sure
- 10 of 11 reports show this layout
See 4 GB DDR3-1066 SO-DIMM on AmazonOpens an Amazon search for this exact spec.
Worked out from 11 hardware reports of this laptop. Sources and method. Updated 9 Nov 2026.
4 laptop-size slots
Illustration Questions
Can I upgrade the RAM in the Dell Precision M6400?
Yes. 4 slots, up to 16 GB seen working. It takes DDR3-1066 laptop-size sticks (SO-DIMM).
What type of RAM does the Dell Precision M6400 use?
DDR3-1066 laptop-size sticks (SO-DIMM, 204-pin).
How much RAM can the Dell Precision M6400 take?
Machines in the reports run up to 16 GB. That matches the 16 GB maximum the firmware reports.
Is this my laptop?
Check the model name on the label underneath. It should read Precision M6400.