| jonathanalis said: what is the limit? 7nm? and after this? we wont get more power on a single chip? |
For the size of a transistor we are coming closer and closer to physical limits, yes. But there are realistic approaches in other directions.
Right now there is stacked memory like HBM that is supposed to be on AMD'S next graphics cards. Bandwith will get much, much higher this way.
A single gigabyte can right now have 128GB/s this way. Imagine 8GB from the PS4 and you have 1024GB/s. RAM like that is offered by Hynix right now.
And stacked chips could be part of the future of CPU's and GPU's as well.
And there are lots of other attempts, like spintronics. That is a little tough for me to explain correctly in english. But you need much less energy to spin an electron than in traditional electronics. That way you possibly could work with far higher clockspeeds.
Stacked chipdesigns are stuff that already exists and could be used for next gen consoles. As well as present and future manufacturing processes, 11nm or 10nm are a realistic possibility.
There is a ton of stuff that could happen in the next years.
Technical improvements in microelectronics have been losing momentum. Thats true. But at the same time, we have gone down from actual high end hardware in 2005 (Xbox 360) to (lower) midrange in 2013. It's not that unlikely that midrange hardware in 2019 will be an equal step like the last one.
Edit:
@Intrinsic:
No problem. It's not like i dont make mistakes myself. 
