Can you explain the differences between DDR3 and DDR4 memory?

DDR3 and DDR4 are two generations of Double Data Rate (DDR) synchronous dynamic random-access memory (SDRAM) modules commonly used in computer systems. Here are the key differences between DDR3 and DDR4 memory:

• Speed: DDR4 memory offers higher data transfer speeds compared to DDR3, resulting in improved overall performance.
• Capacity: DDR4 modules have higher maximum capacities than DDR3 modules, allowing for larger memory configurations in high-end systems.
• Voltage: DDR4 memory operates at a lower voltage than DDR3, leading to improved energy efficiency and reduced power consumption.
• Frequency: DDR4 memory modules have higher frequencies and lower latencies compared to DDR3, further enhancing system responsiveness.
• Compatibility: DDR4 memory is not backward compatible with DDR3 slots, so system upgrades may require a motherboard that supports DDR4.

Understanding the differences between DDR3 and DDR4 memory is crucial for computer hardware engineers to make informed decisions when designing or upgrading systems.