If you dont dream of playing games at high resolutions and fiddling around with those Eye candy settings then the 915 based chipset (Intel Extreme Graphics 2) will run Doom 3 at a complete low resolution but it will run for sure thats a fact.Trust me it will be better to go in for a dedicated Graphics card rather than investing in a Cr@ppy onboard solutions.Games which will release in the later half this year will definetly be hell bent on demanding atleast a Geforce 4 or Higher based card to atleast get them going on your system.Its better to be safe with a decent graphic card like Geforce 6600Gt than settling for an onboard solution which would hardly last for a while now.