Pemalite said:
Soleron said:
Core IPC and clockspeed can be increased on phones/tablets for at least the next five years, they are nowhere near the limit. For example ARM was A8 two years ago, A9 now and A15 next year, single core performance increasing hugely each time and it will continue. We're at about 1GHz and the limit is ~5GHz
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Clock rates are the frequency at which the transisters etc' operate at.
We haven't hit a "practical limit" thus far, new technologies and techniques are always being discovered which can improve how quickly a transister switches and the frequencies that they operate at. - For example, I remember reading a few years ago of a 100ghz transister.
Not on CMOS they aren't. Silicon CMOS will be used for the next 5-10 years regardless of what you read about, it's too expensive to make other technologies work at present. I can say this because Intel's roadmap goes to 11nm in ~5 years time.
Take the Intel Atom. - It is actually paired with low-powered transisters, these don't scale in frequency to well but they do save on power consumption.
The Core i7 series however uses transisters which scale in frequency far more aggressively, however they will and do use that little bit more power to pull it off.
There have been no desktop CPUs with reasonable thermals (i.e. <=130W TDP) that have gone above 4.5GHz yet. It has been stagnant for years ever since the Pentium 4 3.8GHz that was 7 years ago. That is why I'm saying 5GHz limit. It's a heat/power issue not a tech one.
Also, extreme overclockers managed to break the 8ghz barrier on the new AMD FX chips, so that 5ghz wall was effectively smashed, a few more die shrinks and maybe the 3D transisters may even improve that situation for stock clocks. (Global Foundries is also working on 3D Transister tech.)
Lolno. 3D transistors won't improve Ivy Bridge's clocks much, just like every tech advance since the 90nm Pentium 4. Look at the leaked roadmaps.
There is allot to CPU design, more than what most people realise, you can watch how a CPU is made here (Dumbed down of course and not showing any architectural stuff.) -http://www.youtube.com/watch?v=qLGAoGhoOhU
I've been following this since 2006.
For phones and consoles... You can have them running at 5 or 10ghz. But they are designed to be: Cheap, Small and Energy Efficient.
They will never match a proper Desktop processor that is designed to end up in systems costing several thousands of dollars with a several year fabrication process advantage, it simply cannot be done, the Cell was no exception, although it could perform some tasks incredibly quickly, but it has it's inefficiencies.
That is what I am saying. They are at 1GHz. I think we can get them up to 3-4GHz before they hit a thermal wall. Mobile chips will come up to current desktop performance in a few years and ~2008 desktop levels are all that is ever needed for games as you become limited by game budget before CPU.
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