Which of the following memory types has the FASTEST speed?

SODIMM (Small Outline Dual In-line Memory Module) is a physical form factor for memory modules, typically used in laptops, and does not define the memory type or its inherent speed.

SDRAM (Synchronous Dynamic Random-Access Memory) is an older generation of RAM that predates DDR technologies and operates at significantly lower clock speeds and data rates.

DDR3 (Double Data Rate 3 Synchronous Dynamic Random-Access Memory) is an advancement over DDR2 and SDRAM, offering significantly higher clock speeds and data transfer rates, typically ranging from 800 MHz to 2133 MHz, which makes it faster.

DDR2 (Double Data Rate 2 Synchronous Dynamic Random-Access Memory) is an older generation of DDR memory, which offers lower clock speeds and data transfer rates compared to DDR3.