@screamopilla

Hey there...Just picked up a Gigabyte 5700 XT OC...Currently running 850 1300 (120 watts in Phoenix miner 5.3e software) and the mem at 1820...I got the mem temps down to about 88 on the highest card by forcing it to run at about 45% constant.   Problem I'm having is that I can't get a stable setup over 1820 ish on the mem...Which gives me about 52.6 mh.  I am running a rig that had an nvidia driver in it but did the DDU 2x.  Curious what your clocks are and what miner you're using.  Are you guys on Windows?   

@rdlduffy try a fixed 45-50% on the fans and see how it looks.