52a is max for the vrm before OCP kicks in n kills the vrm...so with that limitation you don't have much oc'in room...i'd say you'll be lucky to get 550mhz if that outta these units unless you super cool the vrms lmao...but that wouldn't be worth it
I determined experimentally 50A or trouble spreads.
Look closely at my freq above
Rock steady @ 3.54T with warm VRMs, "lmao".
YMMV