Hi folks. I have my new R7 since a couple of days ago and got these stable hashrates:
 - XMR: 3125 H/s. --> using SRBminer 1.7.9 + OC (1056 mV, Core freq 1914 MHz, mem freq 1127 MHz, power limit +20%)
 - ETH: 98.1 MH/s -->using Claymore Dual v 11.7 + same OC.
Power consumption oscillates between 215 to 265 W.
Driver was the adrenalin v 19.3.3.
Windows 10

I know that still needed to optimize OC

Hope that helps.

Coinbaker