2010 game on 2006 hardware.
And the point is? Not like games from 2005 is any easier to run then 2011. Most games are all the same, console ports, so he won't need that much of an upgrade to run them. Look at dragon age 2, there's a prime example. Skyrim is another, also the call of duty games as well. They're nearly exactly (skyrim IS exactly) the same as the console version.