I run the R9 290 card and love it..
BUT.. The newer 390, with 8 gigs onboard and a 512 Bit Interface will smoke mine. BTW.. Its the Interface that counts...Mine is 380, something...
This is a typical review of this card..
very efficient and elegant desgin, like it alot, its got alot of potential in terms of temps and overclocking.
-heard alot of review that this card beats the GTX 970 and is on par with a GTX 980
-no this is not a rebrand, its a refresh with a much higher clock, lower power usage, 2x more VRAM (which is a plus for 4K and mods), lower temps then its predecessor 290, and atleast 10-15 higher fps in games)
-directx 12 is gonna be a plus as well with amd stating that it may increase upwards to almost 80%, depending on what video card you have