L1 Cache Split

What this L1 cache architecture question tests

This is a foundational computer-architecture question that assesses whether you understand the physical organization of modern CPU caches. Quant-trading firms and high-frequency systems care deeply about cache behaviour because microsecond-scale performance hinges on memory access patterns and cache hits.

The question probes your grasp of how L1 caches are partitioned to serve different kinds of processor requests. Understanding this split is essential for reasoning about cache misses, memory stalls, and ultimately latency in systems where nanoseconds matter. Strong candidates can explain not just the division itself, but why processors benefit from organizing their fastest cache this way.

• Cache hierarchy and memory locality
• Instruction vs. data access patterns
• Cache performance in low-latency systems