On Thu, 12 Jul 2018 11:47:00 +0100
The Natural Philosopher  wrote:

> On 12/07/18 08:50, Ahem A Rivet's Shot wrote:
> > On Thu, 12 Jul 2018 08:27:24 +0100
> >  It looked that way just before NVMe, I saw some discussions
> > around the possibility that DRAM may become obsolete with NVMe SSDs
> > filling cache lines directly.
>
> Yes. That makes sense BUT it wont actually make e.g. my desktop any
> faster because it spends almost no time now on IO wait

 It will if the NVMe SSD can fill the cache lines faster than DRAM
can (which is not yet the case).

> >  Nope there's still power consumption to attack or rather being
> > attacked. Run your mind back to the time a bleeding edge PC was about as
> > powerful as a RPi3 and consumed the thick end of a hundred watts.
> >
>
> Yes, but that has not much further to go either. It is an expression
> somewhat of morres law. As gate size gets smaller so too dpoes te power,
> exspecially if the clock rate is lowered

 True but it is the fastest moving development today.

> ARM is economical because there wasn't a lot in it, because Acorn could
> not afford a bigger gate array to build it on

 There's quite a lot in an A72 core but I can still run two of them
and eight A53 cores in my phone.

> >  Big data centres don't particularly need faster processors or
> > faster memory they already hold tens of thousands of processors and
> > hundreds of thousands of discs - they do need denser storage and lower
> > power consumption.
> >
>
> And they will get that a bit.

 They're getting it quite a lot at the moment - drives and SSDs are
still getting bigger, faster and lower power at quite a rate. This is more
visible at the 'enterprise' end of the business rather than the 'consumer'
end.

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