Should I upgrade my Macbook Air?

I currently own a 2011 Macbook Air 13" and am currently wondering if I should upgrade to a 2012 Macbook air 11". I just need portability and power for blender, animation and light gaming like minecraft. Both are basemodels.

Does your current MacBook Air not do blender, animation and light gaming like minecraft? If it does there's no need to upgrade. If it does not then consider an upgrade.