There's your problem. That sentence should read: "Well there is an Intel engineer commenting in this video so I'll take it as marketing spin."
exactly, and while I can play shogun 2 tw on the hd3000, its really by far not a pleasant experience, the HD 4000, keeps up the same thing, low settings, low res
still it doesnt matter, from the 4600 we experienced a 20% increase, with the 5100 we are expecting 50% over the 4600, with the 5200 we are expecting more, it will be an improvement, will it make gaming more enjoyable for casual players? sure thing. Are we expecting that suddenly we are facing intel competing on the mid range? nope.
Im in the corner of people that think the 5100 will remove the need for the entry level (if clear performance increase is not there, or does it really matter? is the investment worth it?)
One thing that people need to be sure is that:
GPUs are limited by somethings:
Bandwidth - igpus are limited by this, its very very clear when you use amd or even intel ones, high speeds and lower CAS timings are a must
Speed of core and vRAM - high speeds of both consume a lot of energy, while you may usually be limited by the speed of the vRAM on midrange gpus (like amds in the 5000m and 6000m series), you can also be limited by the speed of the core, intel is pushing for 1300mhz at the core, thats fast and thats to compensate for the lack of speed in the vRAM, i.e. your system ram
Power of the cores - there isnt much to explain here
TDP - this weights heavily on igpus, you are much more limited in terms of power that you need to dissipate
So in the end, while we are expecting the 5200 to be faster than the 5100, we dont know for sure how much, its only 128mb of very fast and very large bandwidth cache, you can see that most demanding games now are consuming around 1gb, so its going to use your slow RAM to source it out, then we have the very high speed of the cores, problem right there, its compensating for something
TL

R will it be good performance improvement? sure. Will it be enough? we dont know
I surely hope that im wrong and in the end the 5200 has more than performance around the 640m that Im expecting and that it actually trade blows with the 650m
I dont know if I can believe this blurb from anand
http://www.anandtech.com/show/6897/best-gaming-notebooks-april-2013
Jarred Walton said:
Finally, lets not forget that there are new GPUs, CPUs, and APUs just around the corner. If rumors are to be believed, Intels GT3e solution (the e is for embedded DRAM) may provide some healthy competition to GPUs like the GT 650M and HD 7730M. Driver support is a concern there, sure, but Intel has definitely improved their driver compatibility over the past year since HD 4000 launched, and doubling performance (or more) would go a long way towards making their iGPU viable. AMD and NVIDIA meanwhile will have 8000M and 700M parts, with some rebranding/recycling and minor clock speed changes. AMD will also have Richland APUs that are supposed to be at least 10% faster than Trinity, and at the right price such a solution could be really attractive. If you can wait until June or so, well know who the winners and losers of the next round are, but well have an updated Best Gaming Notebooks by then.
he really isnt one of my favorite writers there, he leans too much on the green side (and I agree that enduro is not terrible, they invented several new lvls for that), and some other biases