Which type of memory has a throughput of 6.4 to 17 GB/s?

The correct answer is DDR3. DDR3 (Double Data Rate type three) SDRAM was designed to improve performance over its predecessor, DDR2, primarily by increasing the bandwidth available for data transfer. It achieves this enhanced performance by having a higher data rate, which can range significantly from 6.4 GB/s to 17 GB/s depending on its specific configuration and speed.

DDR3 operates at a dual data rate, meaning it can transfer data on both the rising and falling edges of the clock cycle, effectively doubling the data rate without increasing the clock frequency. The higher bandwidth provided by DDR3 is particularly beneficial for memory intensive applications, including gaming and professional workloads.

In contrast, DDR and DDR2 have lower throughput capabilities than DDR3. With DDR, the maximum throughput is around 2.1 GB/s, while DDR2's maximum throughput reaches approximately 8.5 GB/s. Rambus Dynamic RAM (RDRAM) has different specifications and operates in a distinct way, focusing on high-performance applications but does not match the wide adoption and flexibility of DDR3.

Understanding the specific capabilities and characteristics of these memory types is essential for grasping their applications in various computing environments, particularly when considering upgrades or configuring systems for optimal performance.