Greater starting speed performance. DDR5 debuts at 4800 M Hz, while DDR4 tops out at 3200 M Hz. This represents a 50% increase in bandwidth. In cadence with compute platform releases, DDR5 has planned performance increases that will scale to 6400 M Hz. Reduced power / increased efficiency. At 1.1V, DDR5 consumes 20% less power than DDR4 equivalent components at 1.2V. In addition to conserving battery life in laptops, it also has a significant advantage for enterprise servers working around the clock. PMIC. DDR5 modules feature on-board Power Management Integrate Circuits (PMIC), which help regulate the power required by the various components of the memory module (DRAM, register, SPD hub, etc). For server-class modules, the PMIC uses 12V; for PC-class modules, it uses 5V. This makes for better power distribution compared to previous generations, improves signal integrity & reduces noise. SPD hub. DDR5 utilises a new device that integrates the Serial Presence Detect (SPD) EEPROM with additional hub features, manages access to the external controller & decouples the memory load on the internal bus from external.