i9-7940X @ 3.5GHz, windows 10 shows 3.47GHz, but HWMonitor shows 3.505GHz
14 core, 28 thread
Keyshot 7.3
253fps
This concludes a performance ratio of 2.68
All AMD 1950x are 2.36-2.48. It is safe to predict that every Intel i9 clock/core has about 10% more performance comparing to AMD threadripper.
However, based on joseph's testing, Ryzen 7 1700x, @2.756 performance ratio, is about 3% performance gain over i9.
Considering i9-7940X is still 1150USD, according to pcpartpicker, or 999USD from microcenter, Threadripper 1950X is only 699USD. If you can get MB for each platform at about the same price, 1950X is a much better option for performance/dollar and just raw performance.