For comparison, Cortex-A15-based (32-bit Tegra K1) Acer Chromebook 13:

    sysbench 0.4.12:  multi-threaded system evaluation benchmark
    
    Running the test with following options:
    Number of threads: 1
    
    Doing CPU performance benchmark
    
    Threads started!
    Done.
    
    Maximum prime number checked in CPU test: 2000
    
    
    Test execution summary:
        total time:                          8.8170s
        total number of events:              10000
        total time taken by event execution: 8.8083
        per-request statistics:
             min:                                  0.83ms
             avg:                                  0.88ms
             max:                                 21.43ms
             approx.  95 percentile:               0.95ms
    
    Threads fairness:
        events (avg/stddev):           10000.0000/0.00
        execution time (avg/stddev):   8.8083/0.00

Total time is 2.4926s with --num-threads=4.