- 2072 Magh · 3 marks
SRAM versus DRAM
Short answer
SRAM uses six-transistor flip-flops, no refresh, faster (1–10 ns) but lower density and higher cost per bit. DRAM uses one transistor and capacitor, needs periodic refresh, slower (50–70 ns) but higher density and lower cost.
Show the differences between SRAM and DRAM.
| Point | SRAM | DRAM |
|---|---|---|
| Storage element | Flip-flop (6 transistors) | One transistor and one capacitor |
| Refresh | Not required | Required every few milliseconds |
| Speed | Faster (about 1-10 ns) | Slower (about 50-70 ns) |
| Density | Low | High |
| Cost per bit | High | Low |
| Power | Low standby power (no refresh), but higher power per bit when active | Needs refresh power all the time, but lower power per bit |
| Complexity | Simple interface | Needs refresh and multiplexed address circuits |
| Access | Direct | Row/column addressing |
| Typical use | Cache, registers | Main memory |
✓ Answer checked by Claude Opus 5.5 (high effort)
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