Find RAM Type and Speed From Commandline in Ubuntu (Linux)

If you need to find out the type of RAM and it's speed or the number of slots available in your computer without having to open the case. Then you can do so in linux machines (Ubuntu or Fedora, etc) by using the following command:

?sudo dmidecode --type 17

It would generate output like this for each slot, so you can also count the number of slots:

# dmidecode 2.9

SMBIOS 2.4 present.

Handle 0x1100, DMI type 17, 27 bytes

Memory Device

Array Handle: 0x1000

Error Information Handle: Not Provided

Total Width: 64 bits

Data Width: 64 bits

Size: 2048 MB

Form Factor: DIMM

Set: None

Locator: DIMM_B

Bank Locator: Not Specified

Type: DDR

Type Detail: Synchronous

Speed: 667 MHz (1.5 ns)

Manufacturer: 7F7F7F7F7F020000

Serial Number: 00000000

Asset Tag: 000000

Part Number: PSD22G6672S