My vote is for the 7950. It will perform better for you
note that toxic have 6000mhz on memory and 7950 what like 4800 mhz and toxic have 200 mhz more on core clock and how much games like crysis use vram for 1080p res
For 1080p you won't go over 2GB unless you have a million mods on something like Skyrim.
And that may be true, but the 7950 is a better card overall, you can't just look at memory and core clock speeds.
its all about fps man you know i gues 7950 have higher memory bandwith but r9 have higher pixel rate im doing bunch of reaserch on both cards and in almost every benchmark r9 270x toxic edges 7950 by 2 or 3 fps