SRAM: what it means.
SRAM cells use multiple transistors and can retain their state without the periodic refresh needed by DRAM while power is supplied. Samsung describes SRAM in small, fast memory areas such as processor caches and buffers. (Samsung: DRAM and SRAM)
DRAM uses charge-storage cells and periodic refresh. The two architectures address different design tradeoffs. Do not interpret the word static as a claim that ordinary SRAM preserves data when power is removed. (Samsung: DRAM and SRAM)
Put the definition to work.
When learning memory terminology, keep SRAM’s lack of refresh separate from long-term storage. Compare its role in a device with the separate DRAM memory subsystem. (Samsung: DRAM and SRAM)
Questions to ask next.
Use these questions as a reading checklist, not as a device-selection recommendation. Exact manufacturer documentation takes priority over a general definition.
- Memory role and interface
- Retention and power requirements
- Capacity, timing and device documentation
For the broader explanation, explore memory and bandwidth. This page defines the term; the companion guide connects it to the rest of the system.
Common SRAM questions.
Is SRAM just another name for DRAM?
No. They use different cell structures and refresh behavior. Both can appear in a system, serving different memory roles. (Samsung: DRAM and SRAM)