Should replace my GTX 680 with a R9-280x? I solely play battlefield 3 & 4.....i currently run a 3570k, gtx 680 SC 2GB, 240 pro SSD, windows 8 pro. Currently getting decent frames on medium settings @ 720p & 1080p (average 70-90)....thoughts?? Not a huge fan of AMD but seems like they have an edge here....