root@Gangosan:/home/gangosan# dmidecode --type memory
# dmidecode 2.11
SMBIOS 2.5 present.

Handle 0x0008, DMI type 6, 12 bytes
Memory Module Information
	Socket Designation: DIMM A1
	Bank Connections: 0 1
	Current Speed: 30 ns
	Type: DIMM SDRAM
	Installed Size: 2048 MB (Double-bank Connection)
	Enabled Size: 2048 MB (Double-bank Connection)
	Error Status: OK

Handle 0x0009, DMI type 6, 12 bytes
Memory Module Information
	Socket Designation: DIMM B1
	Bank Connections: 2 3
	Current Speed: 30 ns
	Type: DIMM SDRAM
	Installed Size: 1024 MB (Single-bank Connection)
	Enabled Size: 1024 MB (Single-bank Connection)
	Error Status: OK

Handle 0x0023, 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: 2

Handle 0x0025, DMI type 17, 27 bytes
Memory Device
	Array Handle: 0x0023
	Error Information Handle: Not Provided
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 2048 MB
	Form Factor: DIMM
	Set: None
	Locator: DIMM A1
	Bank Locator: BANK0
	Type: DDR2
	Type Detail: Synchronous
	Speed: 667 MHz
	Manufacturer: Manufacturer0
	Serial Number: SerNum0
	Asset Tag: AssetTagNum0
	Part Number: PartNum0

Handle 0x0027, DMI type 17, 27 bytes
Memory Device
	Array Handle: 0x0023
	Error Information Handle: Not Provided
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 1024 MB
	Form Factor: DIMM
	Set: None
	Locator: DIMM B1
	Bank Locator: BANK1
	Type: DDR2
	Type Detail: Synchronous
	Speed: 667 MHz
	Manufacturer: Manufacturer1
	Serial Number: SerNum1
	Asset Tag: AssetTagNum1
	Part Number: PartNum1