multicore rendering

i have a really awesome cpu - amd ryzen 7 3800x 3.9 ghz (i wont oc to anything and boost allows to 4.5) ati radeon rx 5700 xt huge 3400 ddr4 ram 16 gig but i have it set to default ddr4 right now will xmp profile to at least 3200 okai gigabyte b450m d3sh motherboard corsair cv 650w non modular...