will a card upgrade improve quality when playing BR and DVD disks? Or is 1080p the highest I can get? My native resolution is 2650 x 1600 on my 30" monitor @ 60 Hertz --but I have seen where it does go up to 75 Hertz.
It is better you just buy a normal graphics card it it is just to watch videos like HD 7770 $110 or gtx 650 $130. If you are going to play games at that resolution you'll be needing something much more powerful like hd 7970 or GTX 670 overclocked
You won't see any difference in video as most blue ray videos are 1080p.