DDR4 outperforms DDR3 with improved performance and lower power consumption. The operating voltage has decreased from 1.5V to 1.2V, which is a 20% reduction of power, and keeps the system at a low temperature for stable operation. It only requires 1.2V to achieve high clock frequency of 2800MHz for overclockers. Additionally, the SPD (Serial Presence Detect) of XPG Z1 allows direct application without changing settings in the BIOS, facilitating usage and system stability.