it hard to find a gigabyte rx 5700 that did do less than 140w from the wall. if you want rx 5700 xt with good power consumption get a Sapphire nitro+ or a pulse.
i have a nitro +SE that is doing 58.3mh with 100w from the wall(74w In software)
https://imgur.com/Jf5LUhWhttps://imgur.com/lG3RHqR