xero99 :
I'm building a gaming PC and can get the r9 270X for around £40 cheaper than an R7950. I know an r9 270x is basically an 7870GHz, but i want to know for next gen games such as BF4 how will it compare to a 7950 in FPS on a 1080P screen? Also I've heard about mantle replacing Directx11 as all next gen consoles are AMD based. Is mantle definitely going ahead and would it improve performance to match a 7950? Thanks
Mantle will not work with both cards, will only be supported by GCN/Mantle cards which are currently only the R7 and R9 sries of AMD cards. Mantle is a replacement or Direct X, imagine Direct X is an engine that gets 35 miles to the gallon, well Mantle is an engine that will get 80 miles to the gallon through better fuel utilization which in turn will increase frames (rumoured by AMD to be approx double with mantle supported games. eg BF4)
In my opinion you should go with the 270X, i know it wont perform as well in non mantle suported games as the 7950 would, but it is also cheap enough that a crossfiore X solution is highly plausible.