I have Dell Latitude E7240 with 4GB/256GB SSD - Intel Core i7 4600U @ 2.10GHz - Generic PnP Monitor (1366x768@60Hz). I am a web developer in the profession and I started playing in my extra time. i don't have much idea what kind of system needs to play COD 4. well this is working fine on my system and I am playing it for 2 days but one of my friends said that the graphic card is very necessary to play COD 4. so my question is that is it safe to continue playing this game without graphic card and above system specification?