You may want to toss Asrock support an email;

Because supported CPU's doesn't list anything beyond FX8350 or 125w TDP

http://www.asrock.com/mb/AMD/Fatal1ty%2099...Killer/?cat=CPU

The FX9590 is a 220w TDP CPU.

For supported RAM, there is no module listed above 2133mhz here;

http://www.asrock.com/mb/AMD/Fatal1ty%2099...ler/?cat=Memory

Better be safe than sorry.