i just found that lscpu is not always showing real frequency. when turbo is controlled by bios itself (not os) then it is showing wrong numbers - like turbo is not working ... but turbo was on

so i recheck and here is updated list. ~2.90 means that it was not stable at this freq. but avg was somewhere there
1. Lenovo C30
Dual Intel(R) Xeon(R) CPU E5-2690 0 @ 2.90GHz
32 threads running @ 2.90GHz
Ubuntu 16.04.6 LTS (GNU/Linux 4.4.0-154-generic x86_64)
128GB (8x 16GB @ 1600MHz)
Total: 391.81 khash/s
2. Lenovo C30
Dual Intel(R) Xeon(R) CPU E5-2690 0 @ 2.90GHz
32 threads running @ 2.90GHz
Ubuntu 16.04.6 LTS (GNU/Linux 4.4.0-31-generic x86_64)
96GB (6x 16GB @ 1600MHz)
Total: 390.72 khash/s
3. Lenovo C30
Dual Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz
40 threads running @ 3.10GHz
Ubuntu 16.04.6 LTS (GNU/Linux 4.4.0-164-generic x86_64)
128GB (8x 16GB @ 1600MHz)
Total: 574.62 khash/s
4. Lenovo C30
Dual Intel(R) Xeon(R) CPU E5-2650L v2 @ 1.70GHz
40 threads running @ 1.70GHz
Ubuntu 16.04.6 LTS (GNU/Linux 4.4.0-142-generic x86_64)
32GB (8x 4GB @ 1333MHz)
Total: 318.01 khash/s
5. HP DL160 G6
Dual Intel(R) Xeon(R) CPU L5520 @ 2.27GHz
16 threads running @ 2.40GHz
Ubuntu 16.04.1 LTS (GNU/Linux 4.4.0-154-generic x86_64)
8GB (2x 4GB @ 1066MHz)
Total: 161.14 khash/s
6. Intel SR1625URSAS
Dual Intel(R) Xeon(R) CPU X5650 @ 2.67GHz
24 threads running @ ~2.75GHz
Ubuntu 16.04.4 LTS (GNU/Linux 4.4.0-116-generic x86_64)
8GB (2x 4GB @ 1333MHz)
Total: 274.16 khash/s
7. IBM System x3550 M3
Dual Intel(R) Xeon(R) CPU X5660 @ 2.80GHz
24 threads running @ ~2.90GHz
Ubuntu 17.10 (GNU/Linux 4.13.0-16-generic x86_64)
8GB (2x 4GB @ 1333MHz)
Total: 288.88 khash/s
8. HP DL360e G8
Dual Intel(R) Xeon(R) CPU E5-2420 v2 @ 2.20GHz
24 threads running @ 2.50Ghz
Ubuntu 16.04.4 LTS (GNU/Linux 4.4.0-116-generic x86_64)
24GB (12x 2GB @ 1333Mhz)
Total: 281.21 khash/s
seems that memory speed or configuration (dual/quad channel...) does not have big effect
bonus:
9. laptop Thinkpad P52s
Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz
8 threads running somewhere @ 2.5-2.8GHz
Win10 Enterprise
16GB (2x 8GB @ 2400MHz)
Total: 133.21 khash/s