The “dmidecode” is a handy tool in Linux to display the hardware specification detail. For example, memory, processor , BIOS and etc.

man dmidecode
DMI TYPES
       The SMBIOS specification defines the following DMI types:
 
       Type   Information
       ----------------------------------------
          0   BIOS
          1   System
          2   Base Board
          3   Chassis
          4   Processor
          5   Memory Controller
          6   Memory Module
          7   Cache
          8   Port Connector
          9   System Slots
         10   On Board Devices
         11   OEM Strings
         12   System Configuration Options
         13   BIOS Language
         14   Group Associations
         15   System Event Log
         16   Physical Memory Array
 
         17   Memory Device
         18   32-bit Memory Error
         19   Memory Array Mapped Address
         20   Memory Device Mapped Address
         21   Built-in Pointing Device
         22   Portable Battery
         23   System Reset
         24   Hardware Security
         25   System Power Controls
         26   Voltage Probe
         27   Cooling Device
         28   Temperature Probe
         29   Electrical Current Probe
         30   Out-of-band Remote Access
         31   Boot Integrity Services
         32   System Boot
         33   64-bit Memory Error
         34   Management Device
         35   Management Device Component
         36   Management Device Threshold Data
         37   Memory Channel
         38   IPMI Device
         39   Power Supply

If we want to know our memory devide information in Linux. We can issue the following command. “17 Memory Device”

sudo dmidecode -t 17
# dmidecode 2.9
SMBIOS 2.4 present.
 
Handle 0x001A, DMI type 17, 27 bytes
Memory Device
	Array Handle: 0x0019
	Error Information Handle: Not Provided
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 2048 MB
	Form Factor: DIMM
	Set: None
	Locator: A0
	Bank Locator: Bank0/1
	Type: Unknown
	Type Detail: None
	Speed: 800 MHz (1.2 ns)
	Manufacturer:  
	Serial Number:  
	Asset Tag:  
	Part Number:

If we want to know our processor information in Linux. We can issue the following command. “4 Processor”

sudo dmidecode -t 4
# dmidecode 2.9
SMBIOS 2.4 present.
 
Handle 0x0004, DMI type 4, 35 bytes
Processor Information
	Socket Designation: Socket 775
	Type: Central Processor
	Family: Other
	Manufacturer: Intel
	ID: 77 06 01 00 FF FB EB BF
	Version: Intel(R) Core(TM)2 Quad CPU
	Voltage: 1.0 V
	External Clock: 333 MHz
	Max Speed: 4000 MHz
	Current Speed: 2333 MHz
	Status: Populated, Enabled
	Upgrade: Socket 478
	L1 Cache Handle: 0x000A
	L2 Cache Handle: 0x000B
	L3 Cache Handle: Not Provided
	Serial Number:  
	Asset Tag:
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