So as some of you may know, i bought my system as a whole for cheap (Only thing I changed was case, I also added in my old sound card, and a new ssd) only thing I need to upgrade is my monitor but I keep saying to myself Nvidia is better for movie (qualitywise using mpchc/vlc) and photoshop cause of purevideo HD and CUDA cores.. is it noticeable? i'm just being paranoid right? i was going to just sell my 6850 OC and save up for a gtx 580 used or something.. Monitorwise, i'm still deciding between an 23" or 27" but definitely IPS panel other than me thinking i'm paranoid, the computer is phenomenal performance wise, and it's silent enough, although because i'm paranoid and ocd about sound i'm going to swap out a few fans later
Compare here: http://www.tomshardware.com/charts/2012-vga-gpgpu/benchmarks,135.html But yeah, you shouldn't be having second thoughts about a video card you bought a month ago.
bought the computer as a whole, thanks! now just waiting for my uncle to ship my new monitor from korea ;p