We are planning to install a CCTV set up in our company. our needs are as follows.
1) Need 4 cameras, so 4 channel DVR is enough. Its for outdoors
2) Need to record/live view to separate HDD and delete automatically when HDD is full.
3) Need remote internet viewing enabled DVR though...
You should definitely try ncix.com I am long time subscriber of their youtube channel they have some awesome pc's. recently they showcased pc called slingshot which comes in your price range link NCIXPC SLIngshot powered by dual EVGA GTX 760 Superclocked in SLI - YouTube .