Sorry, I forgot to put the details.
Yes, we are using a setup box with local connection (RYB cable). want ot buy a good one, so that in future may be I can use in HDMI type. Can't compromise in picture quality

Offcourse budget within 2k. Using Dell 23" LED - U2312HM Monitor
Graphics card: ASUS GTX650Ti
Ram: Corsair Vengeance DDR3 8 GB
MB: Gigabyte GA-B75M-D3H