[FEATURE REQUEST] Get RAM speed (MT/s)

[JGeek00]

Hi. I would like to be able to get the RAM speed. I dig into your code and I found that if I run the command you are using to get the memory info with sudo permissions, I can get that value: sudo dmidecode -t memory.

My computer is a MinisForum N40 running Ubuntu Server 22.04.

This is the result for my system:

Getting SMBIOS data from sysfs.
SMBIOS 3.2.0 present.

Handle 0x0008, DMI type 16, 23 bytes
Physical Memory Array
	Location: System Board Or Motherboard
	Use: System Memory
	Error Correction Type: None
	Maximum Capacity: 64 GB
	Error Information Handle: Not Provided
	Number Of Devices: 4

Handle 0x000A, DMI type 17, 84 bytes
Memory Device
	Array Handle: 0x0008
	Error Information Handle: Not Provided
	Total Width: 16 bits
	Data Width: 16 bits
	Size: 4 GB
	Form Factor: DIMM
	Set: None
	Locator: A1_DIMM0
	Bank Locator: A1_BANK0
	Type: DDR4
	Type Detail: Synchronous
	Speed: 2133 MT/s
	Manufacturer: ABCD
	Serial Number: 1234
	Asset Tag: 9876543210
	Part Number: 123456789012345678
	Rank: Unknown
	Configured Memory Speed: 2133 MT/s
	Minimum Voltage: 1.1 V
	Maximum Voltage: 1.1 V
	Configured Voltage: 1.2 V
	Memory Technology: DRAM
	Memory Operating Mode Capability: Volatile memory
	Firmware Version: Not Specified
	Module Manufacturer ID: Unknown
	Module Product ID: Unknown
	Memory Subsystem Controller Manufacturer ID: Unknown
	Memory Subsystem Controller Product ID: Unknown
	Non-Volatile Size: None
	Volatile Size: 4 GB
	Cache Size: None
	Logical Size: None

Handle 0x000C, DMI type 17, 84 bytes
Memory Device
	Array Handle: 0x0008
	Error Information Handle: Not Provided
	Total Width: Unknown
	Data Width: 64 bits
	Size: No Module Installed
	Form Factor: Unknown
	Set: None
	Locator: A1_DIMM1
	Bank Locator: A1_BANK1
	Type: Unknown
	Type Detail: Synchronous
	Speed: Unknown
	Manufacturer: A1_Manufacturer1
	Serial Number: A1_SerNum1
	Asset Tag: A1_AssetTagNum1
	Part Number: Array1_PartNumber1
	Rank: Unknown
	Configured Memory Speed: Unknown
	Minimum Voltage: Unknown
	Maximum Voltage: Unknown
	Configured Voltage: Unknown
	Memory Technology: Unknown
	Memory Operating Mode Capability: Unknown
	Firmware Version: v1.0
	Module Manufacturer ID: Unknown
	Module Product ID: Unknown
	Memory Subsystem Controller Manufacturer ID: Unknown
	Memory Subsystem Controller Product ID: Unknown
	Non-Volatile Size: None
	Volatile Size: None
	Cache Size: None
	Logical Size: None

Handle 0x000E, DMI type 17, 84 bytes
Memory Device
	Array Handle: 0x0008
	Error Information Handle: Not Provided
	Total Width: Unknown
	Data Width: 64 bits
	Size: No Module Installed
	Form Factor: Unknown
	Set: None
	Locator: A1_DIMM2
	Bank Locator: A1_BANK2
	Type: Unknown
	Type Detail: Synchronous
	Speed: Unknown
	Manufacturer: A1_Manufacturer2
	Serial Number: A1_SerNum2
	Asset Tag: A1_AssetTagNum2
	Part Number: Array1_PartNumber2
	Rank: Unknown
	Configured Memory Speed: Unknown
	Minimum Voltage: Unknown
	Maximum Voltage: Unknown
	Configured Voltage: Unknown
	Memory Technology: Unknown
	Memory Operating Mode Capability: Unknown
	Firmware Version: v1.0
	Module Manufacturer ID: Unknown
	Module Product ID: Unknown
	Memory Subsystem Controller Manufacturer ID: Unknown
	Memory Subsystem Controller Product ID: Unknown
	Non-Volatile Size: None
	Volatile Size: None
	Cache Size: None
	Logical Size: None

Handle 0x0010, DMI type 17, 84 bytes
Memory Device
	Array Handle: 0x0008
	Error Information Handle: Not Provided
	Total Width: Unknown
	Data Width: 64 bits
	Size: No Module Installed
	Form Factor: Unknown
	Set: None
	Locator: A1_DIMM3
	Bank Locator: A1_BANK3
	Type: Unknown
	Type Detail: Synchronous
	Speed: Unknown
	Manufacturer: A1_Manufacturer3
	Serial Number: A1_SerNum3
	Asset Tag: A1_AssetTagNum3
	Part Number: Array1_PartNumber3
	Rank: Unknown
	Configured Memory Speed: Unknown
	Minimum Voltage: Unknown
	Maximum Voltage: Unknown
	Configured Voltage: Unknown
	Memory Technology: Unknown
	Memory Operating Mode Capability: Unknown
	Firmware Version: v1.0
	Module Manufacturer ID: Unknown
	Module Product ID: Unknown
	Memory Subsystem Controller Manufacturer ID: Unknown
	Memory Subsystem Controller Product ID: Unknown
	Non-Volatile Size: None
	Volatile Size: None
	Cache Size: None
	Logical Size: None

[NoobishSVK]

You gotta run the app under root (not recommended), or use this command:
sudo chmod 444 /sys/firmware/dmi/tables/*

However the file permissions might return back after a reboot.

[JGeek00]

You gotta run the app under root (not recommended), or use this command:

sudo chmod 444 /sys/firmware/dmi/tables/*

However the file permissions might return back after a reboot.

I'm using systeminformation to develop a REST API to access the hardware information from a mobile application. The API is running with root access. I'm not concerned about security because the API for now only sends data to the client, it doesn't receive any data from de client. It would be useful to have the MT/s available, but marked on the documentation as you need to have root access to get that information.