Yo do any of the voltages look different then what you set in bios? on z97 AFD limits on some versions were lower than what you could set in bios so pressing apply even without changing anything would make it freeze.
Won't see much over 3200 tight unfortunately
Do they disclose the version of r15 since the new one scores 10-15 higher on quad which wasn't available when 5960x was in it's prime.