Ok this is a rough estimate but the HD 4000 is basically equivalent to an Nvidia 610M @720p:

http://www.notebookcheck.net/Intel-H...0.69168.0.html

Again very rough estimate... a 610M puts out 141 GFlops:

http://en.wikipedia.org/wiki/Compari...6xxM.29_series

This makes it comparable to an 8600GTS nvidia desktop chipset - although comparing the fillrate its more like a 8500GT. Minimum requirements for AAR are 8800 series.

It might be playable since its a much newer architecture but it will probably suck. If you get one be sure to report how it works out