Which memory rating indicates the fastest memory performance?

The selected answer, DDR3-1600, signifies the fastest memory performance among the options provided. Memory ratings are typically indicated in megahertz (MHz) and reflect the data transfer speed or bandwidth of the RAM. DDR3-1600 operates at a frequency of 1600 MHz, allowing it to handle more data throughput compared to the other options.

For context, DDR2-800 operates at 800 MHz, which is significantly slower than DDR3-1600. DDR4-1200, although part of a newer generation, has a lower effective speed than DDR3-1600 since its rating represents a base frequency that doesn't reach the same data throughput under typical conditions. DDR3-1333 also operates below 1600 MHz, thus offering less memory performance compared to DDR3-1600. Therefore, DDR3-1600 is the fastest memory option in this scenario due to its higher MHz rating, indicating a greater capability for processing data rapidly.