Check the iMac 2011 graphics thread, we published a guide how to setup OpenCore to get most out of this card and made a condensed version of RadeonBoost called PolarisBoost just for these AMD cards.sleep is actually broken for me as expected for a quick ‚plug and play‘.
Didn‘t use polarisboost yet with the xeon but maybe i‘ll try this evening - anyway i‘m sceptical as CMMChris PTPL is intended for desktop 580s not for mobile wx7100, though.
I would not sacrifice the sleep for 100MHz more