What does 2Rx8 stands for?

2Rx8 refers to a specific configuration of computer memory modules, particularly in the context of DRAM (Dynamic Random Access Memory). The "2R" denotes that the memory chip has two ranks, which are essentially groups of memory chips that can be accessed independently. The "x8" indicates that each chip has an 8-bit data width. Together, this configuration affects the memory's performance and capacity in a computer system.