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Ubuntu Check RAM Memory Chip Speed and Specification From Within a Linux System
by NIX CRAFT on FEBRUARY 9, 2011 · 5 COMMENTS· LAST UPDATED FEBRUARY 9, 2011
in UBUNTU LINUX

I want to add more RAM to my server running Ubuntu Linux. How do I find out my current RAM chip information such as its speed, type and manufacturer name within a Linux system without opening the case?

You need to use the dmidecode command which is a tool for dumping a computer's DMI (some say SMBIOS) table contents in a human-readable format. This table contains a description of the system's hardware components (such as RAM), as well as other useful pieces of information such as serial numbers and BIOS revision. Thanks to this table, you can retrieve hardware information without having to probe for the actual hardware. Open a command-line terminal (select Applications > Accessories > Terminal), and then type:
$ sudo dmidecode --type memory

OR
# dmidecode --type memory | less

OR
$ sudo dmidecode --type 17

Sample outputs:

# dmidecode 2.10
SMBIOS version fixup (2.51 -> 2.6).
SMBIOS 2.6 present.
Handle 0x0011, DMI type 16, 15 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 4 GB
Error Information Handle: Not Provided
Number Of Devices: 4
Handle 0x0012, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x0011
Error Information Handle: No Error
Total Width: 72 bits
Data Width: 64 bits
Size: 2048 MB
Form Factor: DIMM
Set: 1
Locator: DIMM#1A
Bank Locator: Bank 1
Type: DDR2
Type Detail: Synchronous
Speed: 667 MHz
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Handle 0x0013, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x0011
Error Information Handle: No Error
Total Width: 72 bits
Data Width: 64 bits
Size: 2048 MB
Form Factor: DIMM
Set: 1
Locator: DIMM#2A
Bank Locator: Bank 2
Type: DDR2
Type Detail: Synchronous
Speed: 667 MHz
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Handle 0x0014, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x0011
Error Information Handle: No Error
Total Width: 72 bits
Data Width: 64 bits
Size: 2048 MB
Form Factor: DIMM
Set: 1
Locator: DIMM#1B
Bank Locator: Bank 1
Type: DDR2
Type Detail: Synchronous
Speed: 667 MHz
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Handle 0x0015, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x0011
Error Information Handle: No Error
Total Width: 72 bits
Data Width: 64 bits
Size: 2048 MB
Form Factor: DIMM
Set: 1
Locator: DIMM#2B
Bank Locator: Bank 2
Type: DDR2
Type Detail: Synchronous
Speed: 667 MHz
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified