I just received my 1600x, to be used for moderate multitasking/gaming.
The reasons I went with it are,
= same clockspeeds as 1800x, almost 300 CDN cheaper.
= A lot of reviewers have seen the "x" variants more likely to achieve higher ram speeds.
= Some reviewers have noted that while almost all Ryzen chips hit 4.0 ish clockspeeds, the X variants often do it at lower voltages.
Which is a goodness thing for a 24/7 OC.s
= The "x" version was only $30 more than a 1600.
= I believe 6 core/12 thread will be the sweet spot fo a couple years at least.
= AM4 will be supported through Zen 3, so a logical upgrade path will be to a 8 core 16 thread chip in 2 1/2 - 3 years.
That will most likely have higher IPC and clockspeeds.
If you stream and/or make videos, O'Cd 1700 would be better value for money.
Your Mileage May Vary.