New hashrate settings for my Gigabyte Gaming RX 5700XT OC 8GB card, for anyone who has one and may be interested. This is using windows 10 64, the latest whql amd gpu drivers and tweaks made through the AMD software tuning section:

Hashrate: 54mh/s

Core clock: 1287mhz (gpu-z shows 1251 actual)
Core voltage: 725mv (limit lowered via MorePowerTools)
Vram clock speed: 1872mhz (gpu-z shows 1868mhz actual)
Vram voltage: default (cannot change this in AMD software)

Custom fan curve: 60-72%, depending on gpu temp

Gpu temp: 43 degrees
Gpu temp (hot spot): 51 degrees
memory temp: 82-86 degrees (depending on ambient temps)

power consumption, software: 107w
power consumption, wall (total system): 178w

Spec for total system is in the post above (approx 40w overheads).

Notes: With a wall meter installed on the plug, the above settings are unstable (crashes/hangs during auto-tuning). Without the wall meter installed these settings are stable