Macro-economic consequences of Moore's law?

By: Ricardo B (ricardo.b.delete@this.xxxxx.xx), April 20, 2017 5:02 pm
Room: Moderated Discussions
Ireland (boh.delete@this.outlook.ie) on April 20, 2017 9:55 am wrote:
> Ricardo B (ricardo.b.delete@this.xxxxx.xx) on April 20, 2017 9:15 am wrote:
> >
> > I've run the experiment.
> > My dirt cheap laptop lost none of it's (limited) autonomy when I swapped the HDD for an SSD.
> >
> > My cheap laptop has a 33.4 Wh battery.
> > My SSD has a peak power consumption of 3.5 watt, similar to the slow HDD that it replaced.
> > It would need 9.5 hour to drain the battery, going at full tilt.
> >
> > In practice, the system drawn 15-20 watt and I'm lucky to get 2 hours out of it.
> >
> > Storage's power consumption is a second order issue on a mobile device's power bugdget.
> >
>
>
> Well then, we've established a data point. So that's around 0.7 of an amp, that your solid state
> drive is drawing, and your getting an extra performance boost. How does the system perform?
>
> All I'd do is continue to run the laptop you mention, with this solid state drive - for a period
> of like a month. Just watch in case the thing, freezes or crashes on you, in un-expected ways.
> That's how one really has to 'run' this experiment. An awful lot of laptops out there, will fail
> the experiment (because they were purposefully designed around crap, low amp drives).
>
> What's the conclusion of the experiment? Or what questions are we still left with?

My experiment has been going on for more than a year, thank you very much.
The laptop is fine and runs fine.


Thousands of other people have done the same experiment, I'm not exactly the first guy to pop open a laptop and replace the HDD with an SSD.


>
> Why are there 'dirt cheap' tablets that can last in charge for a whole day - and 'dirt cheap'
> laptops never do?
I don't know what the cost distribution between parts inside a tablet is like

(a) Because laptops tend to have much more power hungry CPUs, memory and displays.
(b) Because some laptops have relatively small batteries. My laptop's battery capacity is 75% of an iPad4. Then again, my laptop was much cheaper than an iPad4.

(Not that you could be bothered to actually look up battery capacities)


> - but I'd guess that the 'battery' and power sub-system of a tablet/phone - costs as much or
> more, than what the 'CPU' costs. And I'd bet that in laptop systems, the CPU costs much more
> than the battery/power system. And that's what's really wrong with laptops, I think.
>
> Like, it isn't even that. Even with higher priced laptops - the battery power is never much more than
> that 'two hours', that you mention. We're still back to this - we're back to the fact that tablets and

You need to get out more.
There are laptops out there which are usable for 4-6 hours and even more.

I just chose a very very cheap one.

> > I've inserted something like a 'Black' version western digital laptop Sata mechanical drive in a laptop. They
> have 7,200 rpm mechanical drives, they're power hungry. I've forgot the exact specs, but it's at least a solid
> amp at five volts. I've found these 'black' mechanical laptop 7,200 rpm drives to be robust. And what I found,
> with that 7,200 rpm laptop storage, . . . is that I'm actually more likely to 'use' the larger amount of local
> storage - because it's fairly decent quality, higher performance storage. You don't have to wait for the laptop
> local drive to 'wake up' out of sleepiness state, in order to do anything, like access a file. Using the storage
> space afforded with that high performance mechanical storage - encourages one to use a laptop for useful stuff,
> like viewing media files etc. Because those 7,200 rpm give the sort of performance needed to play high resolution
> media files off the local drive, and still have a fairly quick system.
>
> The 'battery' in this case, performs a much different function. Effectively, the laptop battery then
> just gives it ten minutes of power, so that it can go into sleep mode in it's own organized way. Which
> is fine. Where I've found this experiment to work successfully (i.e. converting a laptop, into a device

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?


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