Static Random Access Memory (SRAM) stores data and instructions temporarily to be accessed at random by the computer processor. Its chip uses only transistors and no capacitors, which prevents the leakage and data corruption often caused by the older dynamic RAM (DRAM). It has an access time as low as 10 nanoseconds and a cycle time much shorter than in a DRAM since it does not pause between accesses. However, because its production is much more expensive than a DRAM, it is commonly used as a memory cache only.
Memory capacity: Choose an SRAM with a large capacity if you use heavy applications or operate several programs simultaneously. Generally, a capacity of 64 MB and below is considered low-end, 128 MB to 256 MB are mid-range, and 512 MB and above are high-end.
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