DDR4 is the next evolution in DRAM, bringing even higher performance and more robust control features while improving energy economy for enterprise, micro-server, tablet, and ultrathin client applications. The following table compares some of the key feature differences between DDR3 and DDR4.
RAM memory usually installed on a system to support the processor for maximum performance. So higher the amount of RAM, better the performance. But in a case where the amount of RAM is higher, but the processor is not so advance that can handle that much amount, the system performance decreases. DDR4 has the double data rate then DDR3. The maximum data transfer rate of DDR4 is 3.2 Gb/s