Like I said believe what you want. I don't think you'll listen to anyone either way. You have an idea in your head about what level of gaming performance you have/want. That's exactly where it will stay (in your head) Those of us who have an interest in GPU/CPU's and their performance, know better. Laptop GPU's specially are renowned for being 'cut-down' versions of desktop GPU's with perhaps two thirds of the relative performance. The Intel Integrated GPU's in particular are very poor.
To stop you from posting on this topic again, and maybe you will realise some sense here, please look at this. It's the grpahics card hierarchy chart on this very website:
http://www.tomshardware.com/reviews/gaming-graphics-card-review,3107-7.html
In this list you will see exactly where your Intel IGPU is in relation to other cards. And the 6670 is way above the Intel GPU. Whether you choose to live in dreamland about your performance or not, I will now leave up to you.
Good luck with your gaming
edit: regarding you tube videos!!! People can make a youtube video look like pretty much anything. They can 'say' its an Intel GPU, and really have something different, and post up 'oh, look at my amazing frame rates on this Intel IGPU'....... they are videos. I trust only whats written in front of me, that I can read and research myself. Sites like Toms, Anandtech are very informative about 'actual performance' the hardware inside the GPU's etc. And also give very clear reference to the performance of each card.
Stop watching videos and read about your GPU or the ones you might want in the future.