Which memory type is an upgrade from DDR3?

DDR4 is indeed the correct choice as an upgrade from DDR3. It represents the fourth generation of Double Data Rate Synchronous Dynamic Random Access Memory. One of its primary advantages over DDR3 is the increased data transfer rate and bandwidth, which enhances overall system performance. DDR4 memory can provide higher speeds and lower voltages, resulting in improved energy efficiency and reduced power consumption compared to its predecessor.

Additionally, DDR4 introduces features such as improved reliability and error correction options, which can be beneficial for operations in high-performance computing environments. The physical design of DDR4 modules is also distinct, enabling compatibility with DDR4 motherboards but not with DDR3 slots, thereby ensuring that only the appropriate memory can be used with the corresponding hardware. This further reinforces the advancement that DDR4 represents over DDR3.