RAM speed

[MS]

I am thinking to upgrade my RAM.

Here is what Linux tells about my current module:

Handle 0x003C, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x003A
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 8192 MB
Form Factor: SODIMM
Set: None
Locator: DIMM B
Bank Locator: BANK 2
Type: DDR4
Type Detail: Synchronous
Speed: 2400 MT/s
Manufacturer: Micron
Serial Number: 128BADF8
Asset Tag: 0F161800
Part Number: 8ATF1G64HZ-2G3B1   
Rank: 1
Configured Clock Speed: 2133 MT/s
Minimum Voltage: 1.2 V
Maximum Voltage: 1.2 V
Configured Voltage: 1.2 V


Why does "speed" and "configured clock speed" differ?

[Valtam]

Not a Linux Lite Support request. Moved.