Macro-economic consequences of Moore's law?

By: Ireland (boh.delete@this.outlook.ie), April 21, 2017 7:43 am
Room: Moderated Discussions
David Hess (davidwhess.delete@this.gmail.com) on April 21, 2017 7:36 am wrote:
> Ricardo B (ricardo.b.delete@this.xxxxx.xx) on April 19, 2017 6:31 pm wrote:
> >
> > Third, powering a 7200 HDD is not difficult.
> > Existing 7200 2.5" HDD consume only 1100 mA @ 5V.
> > Even an USB 2.0 port can provide 2000 mA @ 5V.
>
> The increase in available power for USB 2.0 was through engineering change notices issued
> years (10!) later. In practice, it cannot be assumed that USB 2.0 ports support more
> than 500mA which is why many external USB 2.0 hard drive enclosures had provisions to
> use two USB ports; 500mA is marginal or too low for many 2.5" hard drives.
>

David,

I think what the makers of a lot of laptops were doing, was installing some custom firmware on their 5,400 rpm drives, that down-clocked them down, to fit just inside the 'knife edge' threshold of the 500mA rating.

So, along comes Joe Blogs, and fit's in a drive that pushes things over that threshold and the uber-cheap power supply system in that laptop - just went banana's. I'll stand corrected (and even open to ridicule on this one), but I've a strong feeling that this stuff was going on.

I'd compare this a bit to like with automobiles, and fuel emissions reporting.
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