RAM architecture involves multiple independent memory banks, meaning that read operations can be parallelized. While this parallelization can increase the effective number of random reads by up to $$4$$ times—provided they are evenly distributed across the memory—burst reads simultaneously benefit from the same $$4$$x speedup, maintaining the performance advantage of sequential access. Furthermore, because memory is naturally aligned to $$64$$-bit boundaries, computational data structures should ideally be aligned to these same boundaries to maximize transfer efficiency. In practice, modern compilers automatically handle this data structure alignment when configured with the appropriate compilation flags.

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Reading from RAM requires first sending an address to the memory module, a setup process that takes roughly $$100$$ ns. Once established, subsequent data transfers are exceedingly fast, taking only $$0.2$$ ns per $$64$$-bit record. When reading a long contiguous sequence of records—known as a burst read—the initial high cost is amortized. Conversely, isolated random reads require the $$100$$ ns setup every time, making the first read $$500$$ times more expensive than subsequent burst transfers. Consequently, while a system might perform up to $$10,000,000$$ random reads per second, computational efficiency dictates avoiding random memory access whenever possible in favor of burst reads and writes.

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