i7 CPU have 8 threads. Total is in this random example 62h/s and PC (CPU) is also running some other things same time. If minimize all possible CPU loads it may give around and even over 10h/s x 8
BTW - Current results on IBM HS22 blade servers with 2x Xeon X5650 CPUs (12 cores total @ 2.67GHz):
[2016-02-11 03:31:19] thread 0: 52 hashes, 10.27 hash/s
[2016-02-11 03:31:19] thread 1: 53 hashes, 10.35 hash/s
[2016-02-11 03:31:19] thread 2: 54 hashes, 10.47 hash/s
[2016-02-11 03:31:19] thread 3: 53 hashes, 10.30 hash/s
[2016-02-11 03:31:19] thread 4: 52 hashes, 10.56 hash/s
[2016-02-11 03:31:19] thread 5: 52 hashes, 10.56 hash/s
[2016-02-11 03:31:19] thread 6: 56 hashes, 10.36 hash/s
[2016-02-11 03:31:19] thread 7: 53 hashes, 10.33 hash/s
[2016-02-11 03:31:19] thread 8: 53 hashes, 10.46 hash/s
[2016-02-11 03:31:19] thread 9: 53 hashes, 10.33 hash/s
[2016-02-11 03:31:19] thread 10: 56 hashes, 10.54 hash/s
[2016-02-11 03:31:19] thread 11: 53 hashes, 10.47 hash/s
[2016-02-11 03:31:19] thread 12: 53 hashes, 10.42 hash/s
[2016-02-11 03:31:19] thread 13: 52 hashes, 10.37 hash/s
[2016-02-11 03:31:19] thread 14: 59 hashes, 10.38 hash/s
[2016-02-11 03:31:19] thread 15: 53 hashes, 10.47 hash/s
[2016-02-11 03:31:19] thread 16: 53 hashes, 10.50 hash/s
[2016-02-11 03:31:19] thread 17: 53 hashes, 10.50 hash/s
[2016-02-11 03:31:19] thread 18: 54 hashes, 10.37 hash/s
[2016-02-11 03:31:19] thread 19: 53 hashes, 10.35 hash/s
[2016-02-11 03:31:19] thread 20: 53 hashes, 10.39 hash/s
[2016-02-11 03:31:19] thread 21: 53 hashes, 10.34 hash/s
[2016-02-11 03:31:19] thread 22: 56 hashes, 10.33 hash/s
[2016-02-11 03:31:19] thread 23: 53 hashes, 10.51 hash/s
[2016-02-11 03:31:19] Total: 249.94 hash/s