Macro-economic consequences of Moore's law?

By: Ricardo B (ricardo.b.delete@this.xxxxx.xx), April 21, 2017 6:59 am
Room: Moderated Discussions
Ireland (boh.delete@this.outlook.ie) on April 20, 2017 5:58 pm wrote:
> Ricardo B (ricardo.b.delete@this.xxxxx.xx) on April 20, 2017 5:02 pm wrote:
> >
> > So, your claim is that replacing a 3.5-4 watt 5400 HDD by a 5.5
> > watt 7200 HDD will cut a laptop's autonomy to 10 minutes?
> >
> >
>
> Ricardo,
>
> I don't mind so much, if it cuts the laptop's autonomy down to ten minutes. That's something I can totally
> deal with (as I try to explain, below). What I'm concerned about, is that the laptop system itself doesn't
> start to overheat and misbehave. I'm delighted to learn, that you inserted the solid state drive into the
> cheap laptop, and it worked so well for you over a year. I'm encouraged by that, I really am.
>
> I'll explain a little more though, if I can.
>
> Where I have tried to re-tool laptops in the past, is for use as server networking
> laboratories. Just to try out certain things, with a couple of systems, running trial
> server operating systems. With a few laptops, and a small amount of power consumption,
> in a restricted space, you can test out certain ideas easily and cheaply.
>
> But this is what I've come across.
>
> I've seen all sorts of problems with trying to introduce even the most modest hard drive upgrade to laptops.
> I've seen new hard drives inserted into laptop systems - sata drives, start to heat up almost to melting
> point. I'm not kidding. Like you touch the hard drive to see how hot that it gets, and it's so hot that
> you could cook an egg almost on top of it. Now, I emphasized earlier, I don't understand enough about laptop
> power distribution schemes, to understand why something like that would happen. No, I'm not talking about
> the laptop CPU, almost going on fire. I'm actually talking about the hard drive component itself, heating
> up to such a level that it almost melts the bottom of the laptop, or goes on fire.
>
> Now, in two decades of using desktop systems, servers, can you ever remember something like that
> happening with a hard drive component? Because, for the life of me, I can't imagine it happening.
> Fans, on cpu's stopping and that sort of thing okay. But never, hard drives starting to 'boil'
> inside a system. What's that all about? Honestly, I'm not making that up. I'd love to get an
> explanation of why that happens, and I've witnessed across a lot of models now.
>
> But where I have successfully upgraded the hard drive to the 7,200 rpm models as described, what it has done
> is it has eliminated 'battery life' completely. And I'm okay with that, because as explained, I think it brings
> back into focus what role or value the 'battery' in a laptop is providing in general. And it's not really a
> 'battery' function, it's more of a UPS function. The reason that I opted mostly for 7,200 rpm mechanical drives
> - rather than solid state drives - is where the laptop is supplying 'bad power' to components such as drives
> - I tend to believe, that the 7,200 rpm mechanical drive if well designed, stands a better chance. Mechanical
> drives, and firmware have been around for a long time, and they have technology that allows them to 'cope'
> in situations where power supply just isn't at a great standard. I tend to think that solid state drives, are
> much more fussy, where something goes wrong with the 'juice' that they're running off of.
>
> But I could stand corrected on that.


You are making extraordinary claims, which need extraordinary evidence.

The 2.5" 7200 rpm HDD I could find, WD Black, consume up at 1.1A @ 5V.
That's 5.5 watt.
Not enough to reduce a laptop battery to 10 minutes.
Difficult to melt plastic.

Nor did I find evidence of a 2.5" 7200 rpm HDD which can consume enough power to do what you describe, nor can I imagine that it would be a good business proposition for HDD makers.

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