This is why it's important:
<<
In addition to increased bandwidth and density, DDR4 buffer chips offer data centers the critical benefits of advanced signal equalization. For example, Rambus registered clock driver (RCD) and data buffer (DB) chips are equipped with sophisticated decision feedback equalizers (DFEs) which are typically used in the communication industry for 10G or higher SerDes. Essentially, DFE circuits allow RCDs and DBs to operate with greater margin on typical systems – as well as in challenging environments where older chipsets are prone to malfunction or fail to achieve higher speeds.>>