Just use the command
sudo dmidecode --type 17[/code][email protected]:~/apps/tor-browser_en-US$ sudo dmidecode --type 17
[sudo] password for droidzone:
# dmidecode 2.11
SMBIOS 2.4 present.
Handle 0x002C, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x002A
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 1024 MB
Form Factor: DIMM
Set: None
Locator: CHANNEL_A
Bank Locator: CHANNEL_A DIMM0
Type: DDR2
Type Detail: Synchronous
Speed: 667 MHz
Manufacturer: Manufacturer0
Serial Number: SerNum0
Asset Tag: AssetTagNum0
Part Number: PartNum0Handle 0x002E, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x002A
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 2048 MB
Form Factor: DIMM
Set: None
Locator: CHANNEL_B
Bank Locator: CHANNEL_B DIMM0
Type: DDR2
Type Detail: Synchronous
Speed: 800 MHz
Manufacturer: Manufacturer1
Serial Number: SerNum1
Asset Tag: AssetTagNum1
Part Number: PartNum1.
[/code]