Need for Discrete Graphics card?

by kokura845 - 4/4/12 12:10 AM

If one primarily uses a Windows 7 desktop PC for websurfing, watching HD quality video via the internet or via a blu-ray player, in this day of integrated GPUs in intel core i7 chips does one really need a discrete GPU like the ones from AMD or Nvidia?

If a discrete GPU is considered a necessity, what's the minimum specs one should look for?