I'd say, if you haven't bought the system already you could take a look at AMD's APUs. Since they have Intergrated graphics and that would help out in GPU accelerated applications. Example would be a youtube video or playing videos in general. Some other applications use it also, like photoshop and some video editing software, just in case you need that extra boost, you have it there.
As for intel CPUs, I'd say 2120.