Well the clock speed is 'nt anything to write home about but if you go with an X370 MB you have usely better VRM cooling and dual BIOS to make it count when overclocking.
Well you would save more realy. the 1600 is sent with a stock cooler that is pritty good. It has a 95 watts of TDP for your CPU with a 65 W TDP you can easy overclock it to 3.6 with out any heat problems.
Ps and remember you have a 75Hz monitor you dont need something like a I7 8700k. Ryzens will do a good job for you up to around 120 Fps, you wanna hunt those high refresh rates go intel, Nvidia and G-sync Ds
Good luck on your PC-part hunting