Volatile working memory
RAM keeps data available with low access latency while powered; it does not replace persistent storage.
MEMORY ATLAS
DDR5 Memory Module
A DDR5 UDIMM places DRAM packages, configuration logic, local power management, and edge contacts on a compact module PCB.
Representative form: unbuffered desktop DDR5 DIMM. Laptop and server modules differ.
Timing is coordinated
The memory controller follows precise command and timing rules. Frequency and latency values describe different aspects of access.
Capacity, channels, ranks
Module capacity, channel layout, rank organization, and controller limits all affect usable configuration and performance.