A technician has to populate a server motherboard with memory. The board has a memory bus speed of 800 MHz. Which of the following memory types should be used?

DDR3 memory operates at higher bus speeds, typically starting from 1066 MHz and up, making it incompatible with an 800 MHz bus.

SDRAM (Synchronous Dynamic Random-Access Memory) is an older memory type with much lower speeds, preceding DDR and DDR2.

Original DDR (DDR1) memory operates at lower speeds than 800 MHz, typically up to 400 MHz.

DDR2 SDRAM (Double Data Rate 2 Synchronous Dynamic Random-Access Memory) was commonly used with bus speeds up to 800 MHz, often labeled as PC2-6400 which signifies an 800 MHz effective clock rate. This memory type is designed for systems operating at such frequencies.