What is a defining characteristic of DDR3 SDRAM (Synchronous dynamic random-access memory)?

The defining characteristic of DDR3 SDRAM is that it operates at clock speeds of 800 MHz and features a connector with 240 pins. DDR3 refers to the third generation of double data rate synchronous dynamic random-access memory, which improves performance and energy efficiency compared to its predecessor, DDR2.

The key aspects here are the clock speed and the connector type. DDR3 modules traditionally start at 800 MHz and can go much higher, with bandwidth increasing as speed improves. The physical connector has 240 pins, which is a distinguishing feature that sets it apart from other DDR types like DDR2, which has 240 pins but operates at different speeds, and DDR4, which has 288 pins.

Understanding the specifications of DDR3 is crucial, especially in the context of system compatibility and performance expectations. This knowledge helps in selecting the correct memory module for a given motherboard design, ensuring that the system operates optimally.