No, sorrry-it can't. What it has is called 'integrated graphics', which is seen in many low cost PC's . As an example, the older iMac has ATI Rage graphics. Just like PC integrated graphics such as Intel's 8245G has, but with PC's you may be able to upgrade a PC onboard graphics, but not with Macs. My PC has the Intel 82845G onboard graphics-great with games, better than compared to the iMac graphics.