Maybe a bit unrelated to your specific case - If you're referring to the max RAM size as per the laptop's official manual, then chances are that your laptop might actually support more RAM than what's written on the book (assuming mb has the latest BIOS). The probable reason is that the vendors make the hardware/BIOS to support the largest possible RAM capacity, but test ( and advertise ) only the largest commercially available dimm size at that point in time.
Originally Posted by GameX2
In my case the laptop's manual says it supports up to 4 GB of RAM, but using 'dmidecode' command I see that it can go up to 8 GB. And my PC officially supports 4GB, but it can go up to 16 GB of RAM, ( currently being used with 6 GB with no issues, see below ). Note the bold lines in red.
Just my 2 cents.
$ sudo dmidecode -t memory
# dmidecode 2.11
SMBIOS 2.2 present.
Handle 0x0007, DMI type 5, 24 bytes
Memory Controller Information
Error Detecting Method: 64-bit ECC
Error Correcting Capabilities:
Supported Interleave: One-way Interleave
Current Interleave: One-way Interleave
Maximum Memory Module Size: 4096 MB
Maximum Total Memory Size: 16384 MB
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 16 GB
Error Information Handle: Not Provided
Number Of Devices: 4
$ free -m
total used free shared buffers cached
Mem: 5971 5843 128 0 210 4457
-/+ buffers/cache: 1174 4796
Swap: 4093 0 4093