Create 1-billion 32-bit integers numbers between 0 to 1-billion. Knuth shuffle the integers.

"Linked list" traverse the integers as follows:

    //array is full of 1-billion numbers, randomly sorted
    uint32_t idx = 0;
    for(int i=0; i<200000000; i++){
        idx = array[idx]; // Random traversal
    }

Pull out a stopwatch (or use Linux's "time" functionality). Divide the time by 200000000. You've now measured memory latency.