Hi I am building my first Gaming PC. My budget is $1000 and I need a monitor,windows 8.1,an optical drive, and a wifi card. So far I am kind of stuck because I am not sure if a fx-6300 will bottleneck the r9-280x/7970 (I might choose the 7970 instead). I have read several forums, but they have conflicting reports. So should I change the CPU? I will be playing at 1080p, and playing battlefield 3/4, crysis 3, Call of duty, watch dogs, metro last light, and BioShock. So will the system bottleneck