first off was that an 6800k or an 8600k, the 6800k will not work with that board, a 8600k will. assuming a typo and 8600k.
you will need DDR4. if you want dual channel you will want matched sets of RAM. so no not any RAM will work. with the 8600k and a zboard you will want to get 3200 as a minimum, if I recall that board can support faster RAM with overclocking. also look for the lowest cas in each class. DDR4 3200 cas 17 is worse/slower than DDR4 3200 CAS 15