Well this is simply because the desktops have longer life cycles then any other mobile devises. Most people are buying new tablets/laptops in matter of 2 or 3 years, where as desktop is much longer then that( depends on the user) this is why sometimes we might see some dips in desktop sells. Desktops just would not simply fade... well, at least for a good amount of time. Both desktop and mobile CPU/GPU are growing, in turns of power, but the gaps between those two are too big. The heat dissipation is one of the biggest problem for mobile devises , that is why Intel is making those low CPUs with low TDP and so mobile devises would not likely to catch up. Unless we see some BIG BIG technology improvements on the mobile side. Desktop would would always have its place in high and middle end PCs, but lower end PC would get replace by laptops and tablet. And tablet would slowly dies off, gets take over by smartphone and some small touch screen laptop . :P This is my take on the market right now XDDD can say for sure thou HURRRR