APUs from both AMD and Intel will never catch dGPU performance. Even with a complete process advantage Intel will not be able to have more than mainstream dGPU performance out of iGPUs.
Great, I agree with you. That doesn't have anything to do with what's being argued here.
The point is that the gap is decreasing rapidly. Low end GPUs are already being cannibalized. Low-midrange (77xx level) is next, beginning with next year's Broadwell and Kaveri. Eventually 78xx-class GPUs will be quite threatened.
The relevance of discrete GPUs will only decrease over time. As their volume decreases in favor of APUs, discrete GPU cost will rise, or at least relative to APUs.
Desktop/mobile up to $150-200
Probably GT2.
No.
The upgrade thing is just one thing...the lack of performance compared to a GPU is the main consern and the thing that makes IGP's useless to me.
If you are only capable of looking at the present, then yes, IGPs will appear that way.
But you think do really want to say that CPU + MOBO....upgrade to new CPU/MBO...and then upgrade to new CPU/Mobo is better than one CPU/MBO that gets 3 GPU updates?
I don't know why you keep bringing up replacing motherboards. Socket longevity is a completely separate issue. Even if a new socket was required, this is only a short term problem -- there are a finite number of components that can be (meaningfully) integrated, and most of the heavy hitters are already integrated. After the PCH is integrated (Broadwell & Skylake), new sockets won't be required anymore, or at least far less often.
So we have lack of performance, a less than optimal upgradepath...again I have to wonder why you don't buy a console instead?
Why don't you buy some humility? Also, who ever said I even game? This has absolutely nothing to do with with who does what -- it's about APUs threatening dGPUs. You're absolutely terrible at writing relevant arguments and writing relevant questions.