No there won't always be x86. As times change and tech changes, we'll see them changing eventually too. Same with RISC. It won't be around forever either, despite it being a better design than CISC. RISC has been a better design all these years. Apple switched to it and worked to make it a success for years, but the reason they couldn't make a go of it at the time was they didn't have the market share or backing to push it through with x86 going strong. Add to that the RISC manufacturers were also constantly letting them down, and they finally had to switch back to a less efficient, but more popular, design. IBM/Motorola...both held RISC back by keeping it in selective markets or just plain letting designs stagnate. Not keeping up with promises either and delivering sub par performance. If Intel and AMD move to RISC designs, then we'll see a change. But of the two, I would not expect Intel to switch first. It'll be AMD. Intel has traditionally been slow at adopting big changes like this. 64bit, multiple cores, APU level tech...all things Intel has lagged behind in. Intel is like a massive semi, great and powerful once moving but hard to stop and change course once it is going. I can see Apple going back to RISC. But it won't get the fanfare of the switch to x86. I think it'll start with iPad and such like that then eventually as ARM gets more buzz, we'll have AMD bringing it in as either server or with APU tech. Intel will then push performance of x86 farther in an attempt to buy time for their own version to come out. Eventually they'll change over too and retake the lead.