Asus Radeon R9270 2GDR5 or Nvidia gtx750ti 2GDR5

[TheFrisb]

Which one of them should i buy? Only those 2 are offered because i am buying a pc that is already made. You can only change the graphics card between those two cards. So which one ?

 

[Computersloeber]

R9 270 is better performance wise, though the Gtx 750ti uses a lot less power if that matters to you.
But for gaming performance the R9 270 is the best.