Eh, its probably not worth it for just gaming/browsing/video watching. It will definitely be faster, but adding another 4gb of ram and an ssd will do a lot more for less money.
Of course if you have the money to spend, go for it. But otherwise, at this point I would just wait until Intel releases Broadwell and do a cpu/mobo upgrade then (or wait til Sky Lake, I think Broadwell will have an end-of-life LGA-1150 socket).