Nope, all the articles clearly state how poorly dual cores do.
(Third option) Try and convince your friend to spend £500, come back and we can spec you a good quad core budget gaming rig.......decent GPU included.
get a good quad core rig and play the latest and future games how they are meant to be played.The Core i3 540 is also left behind by the Core i5 750 despite featuring Hyper-Threading.
During testing, we noticed that the game isn't particularly dual-core-friendly. We saw roughly a 25% decrease in performance when going from four to two cores.
It was also interesting to see that Dirt 3 really dislikes dual-core processors