Calculate cache hit ratio and effective memory access time (EMAT). EMAT = hit_rate × cache_time + miss_rate × memory_time. Higher hit ratios dramatically reduce average latency.
Enter the values for the scenario you are assessing. Calculate cache hit ratio and effective memory access time (EMAT). EMAT = hit_rate × cache_time + miss_rate × memory_time. Higher hit ratios dramatically reduce average latency. Use the cache hit ratio result to inform your calculation.