Re: Cautiously Optimistic
> without taking some of the same shortcuts Apple did like integrating RAM and GPU
The whole point of these chips is that they have integrated components. Every time you want to leave one chip, cross the motherboard and enter another chip is take a shit load of time. For most workloads the CPU spends most of its life waiting for data to process, cutting the access time by bringing the RAM onboard leads to big performance wins. So it is precisely the fact that they brought the stuff on board which allows these things to run at the speed they do.
It is unlikely that we will see processors with external RAM running at the same speed as chips with integrated RAM unless someone either finds a totally new way to make chips work or they invent an entirely new sort of physics. The same happened years back with cache, you used to be able to make L1 cache external to the CPU and still get a 1 cycle access time but as clock speeds increased this stopped being possible and it had to move to being on board and we no longer see multi MB L1 caches.
Integrated RAM is obviously capacity limited. My hunch is that we'll see systems needing more RAM basically becoming tightly clustered groups of CPUs with onboard memory and that you'll add more RAM by adding more CPUs. Either that or we'll see traditional RAM being used as fast swap space.