Re: on the verge of shopping for new desktop hardware, recommendations?

From	Linux-Fan <Ma_Sys.ma@web.de>
Newsgroups	linux.debian.user
Subject	Re: on the verge of shopping for new desktop hardware, recommendations?
Date	2021-03-08 21:20 +0100
Message-ID	<BQuw9-736-3@gated-at.bofh.it> (permalink)
References	(1 earlier) <BQdlD-4Ia-3@gated-at.bofh.it> <BQdYl-5ab-1@gated-at.bofh.it> <BQfdL-5VO-1@gated-at.bofh.it> <BQlsR-1kO-1@gated-at.bofh.it> <BQsXn-5YT-1@gated-at.bofh.it>
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Tixy writes:

> On Mon, 2021-03-08 at 05:36 -0500, The Wanderer wrote:
> > On 2021-03-07 at 22:53, Felix Miata wrote:
> >
> > > Linux-Fan composed on 2021-03-08 03:35 (UTC+0100):
> > >
> > > > Wrt. power I usually start from CPU + GPU
> > >
> > > I used an online calculator
> > > https://www.bequiet.com/en/psucalculator
> > > on this system with
> >
> > Applying the power-consumption handwave estimates from Linux-Fan's
> > larger mail, that would be:
> >
> > > i3-7100T (TDP 35W) supports up to 3 displays up to 4096x2304
> >
> > 35
>
> TDP is Thermal Design Power, it doesn't mean the max power.
>
> Whilst experimenting with my new desktop, with a 65W TDP CPU, the power
> of the whole system (measured at the mains supply) went from 16W idle
> to 170W by executing "while : ; do : ; done" for each core. I'd guess
> the bulk of that is the CPU, not the memory system.

Yes, this is good to keep in mind. For my system, the power consumption went  
from 100W idle to 264W with your test, i.e. +164W which is close to the  
processor TDP of 165W. Using a different "benchmark" [1], I achived 288W  
i.e. more than the TDP. Of course, the UPS' power display is slow and hence  
I would not notice the real spikes :)

CPU Manufacturers do not seem to publish max power figures AFAICT. Hence it  
seems best to estimate the additional power needed based on experience/tests?

> It soon drops to 130W as the thermal protection kicks in, but you'd
> want a PSU to cope with the peaks. And maxing out all cores isn't just
> a theoretical exercise, transcoding video files or compiling programs
> will happily do that.

The interesting thing with modern CPUs is that even applications that  
seemingly cause 100% CPU usage (like my benchmark [1]) do not actually  
stress the CPU most -- I still do not know all the details about that,  
though. In part, it seems to be related to some instructions needing more  
power than others (vector extensions are known to be power-hungry).

[1] https://masysma.lima-city.de/32/bruteforce3.xhtml

Linux-Fan
öö

[...]

Thread

on the verge of shopping for new desktop hardware, recommendations? Dan Hitt <dan.hitt@gmail.com> - 2021-03-07 06:10 +0100
  Re: on the verge of shopping for new desktop hardware, recommendations? Dan Hitt <dan.hitt@gmail.com> - 2021-03-07 06:10 +0100
    Re: on the verge of shopping for new desktop hardware, recommendations? Kenneth Parker <sea7kenp@gmail.com> - 2021-03-07 07:50 +0100
      Re: on the verge of shopping for new desktop hardware,  recommendations? Richard Owlett <rowlett@cloud85.net> - 2021-03-07 11:10 +0100
        Re: on the verge of shopping for new desktop hardware, recommendations? Kenneth Parker <sea7kenp@gmail.com> - 2021-03-08 17:50 +0100
      Re: on the verge of shopping for new desktop hardware,  recommendations? songbird <songbird@anthive.com> - 2021-03-07 19:20 +0100
        Re: on the verge of shopping for new desktop hardware,  recommendations? John Boxall <jboxall47@gmail.com> - 2021-03-07 19:50 +0100
        Re: on the verge of shopping for new desktop hardware,  recommendations? Felix Miata <mrmazda@earthlink.net> - 2021-03-07 23:50 +0100
          Re: on the verge of shopping for new desktop hardware, recommendations? The Wanderer <wanderer@fastmail.fm> - 2021-03-08 00:10 +0100
            Re: on the verge of shopping for new desktop hardware,  recommendations? Felix Miata <mrmazda@earthlink.net> - 2021-03-08 02:30 +0100
            Re: on the verge of shopping for new desktop hardware,  recommendations? Dan Ritter <dsr@randomstring.org> - 2021-03-08 14:30 +0100
    Re: on the verge of shopping for new desktop hardware,  recommendations? David Christensen <dpchrist@holgerdanske.com> - 2021-03-07 09:50 +0100
      Re: on the verge of shopping for new desktop hardware,  recommendations? David Christensen <dpchrist@holgerdanske.com> - 2021-03-07 10:00 +0100
      Re: on the verge of shopping for new desktop hardware,  recommendations? songbird <songbird@anthive.com> - 2021-03-07 19:20 +0100
        Re: on the verge of shopping for new desktop hardware, recommendations? Stefan Monnier <monnier@iro.umontreal.ca> - 2021-03-07 20:00 +0100
          Re: on the verge of shopping for new desktop hardware,  recommendations? Andrei POPESCU <andreimpopescu@gmail.com> - 2021-03-09 11:00 +0100
            Re: on the verge of shopping for new desktop hardware,  recommendations? Dan Ritter <dsr@randomstring.org> - 2021-03-09 16:00 +0100
              Re: on the verge of shopping for new desktop hardware,  recommendations? Andrei POPESCU <andreimpopescu@gmail.com> - 2021-03-09 17:00 +0100
                Re: on the verge of shopping for new desktop hardware,  recommendations? Dan Ritter <dsr@randomstring.org> - 2021-03-09 18:50 +0100
                Re: on the verge of shopping for new desktop hardware,  recommendations? Andrei POPESCU <andreimpopescu@gmail.com> - 2021-03-10 11:00 +0100
      Re: on the verge of shopping for new desktop hardware,  recommendations? Celejar <celejar@gmail.com> - 2021-03-07 20:10 +0100
        Re: on the verge of shopping for new desktop hardware,  recommendations? David Christensen <dpchrist@holgerdanske.com> - 2021-03-07 20:20 +0100
    Re: on the verge of shopping for new desktop hardware,  recommendations? Dan Ritter <dsr@randomstring.org> - 2021-03-07 18:00 +0100
      Re: on the verge of shopping for new desktop hardware, recommendations? Dan Hitt <dan.hitt@gmail.com> - 2021-03-07 19:10 +0100
  Re: on the verge of shopping for new desktop hardware, recommendations? IL Ka <kazakevichilya@gmail.com> - 2021-03-07 14:20 +0100
    Re: on the verge of shopping for new desktop hardware, recommendations? Dan Hitt <dan.hitt@gmail.com> - 2021-03-07 19:00 +0100
      Re: on the verge of shopping for new desktop hardware,  recommendations? David Christensen <dpchrist@holgerdanske.com> - 2021-03-07 20:10 +0100
        Re: on the verge of shopping for new desktop hardware, recommendations? Dan Hitt <dan.hitt@gmail.com> - 2021-03-08 01:10 +0100
          Re: on the verge of shopping for new desktop hardware,  recommendations? Felix Miata <mrmazda@earthlink.net> - 2021-03-08 01:20 +0100
            Re: on the verge of shopping for new desktop hardware, recommendations? Dan Hitt <dan.hitt@gmail.com> - 2021-03-08 01:40 +0100
              Re: on the verge of shopping for new desktop hardware,  recommendations? Felix Miata <mrmazda@earthlink.net> - 2021-03-08 02:40 +0100
                Re: on the verge of shopping for new desktop hardware,  recommendations? David Wright <deblis@lionunicorn.co.uk> - 2021-03-08 03:10 +0100
                Re: on the verge of shopping for new desktop hardware,  recommendations? Felix Miata <mrmazda@earthlink.net> - 2021-03-08 03:40 +0100
                Re: on the verge of shopping for new desktop hardware,  recommendations? David Wright <deblis@lionunicorn.co.uk> - 2021-03-09 05:40 +0100
                Re: on the verge of shopping for new desktop hardware,  recommendations? Felix Miata <mrmazda@earthlink.net> - 2021-03-09 06:20 +0100
                Re: on the verge of shopping for new desktop hardware, recommendations? rhkramer@gmail.com - 2021-03-09 14:20 +0100
                Re: on the verge of shopping for new desktop hardware,  recommendations? Joe <joe@jretrading.com> - 2021-03-09 14:40 +0100
                Re: on the verge of shopping for new desktop hardware,  recommendations? Andrei POPESCU <andreimpopescu@gmail.com> - 2021-03-10 11:00 +0100
                Re: on the verge of shopping for new desktop hardware,  recommendations? Joe <joe@jretrading.com> - 2021-03-10 12:30 +0100
                Re: on the verge of shopping for new desktop hardware, recommendations? Gene Heskett <gheskett@shentel.net> - 2021-03-09 18:10 +0100
                Re: on the verge of shopping for new desktop hardware,  recommendations? David Wright <deblis@lionunicorn.co.uk> - 2021-03-09 22:20 +0100
                Re: on the verge of shopping for new desktop hardware, recommendations? Stefan Monnier <monnier@iro.umontreal.ca> - 2021-03-09 16:10 +0100
                Modem MACs and how ISPs view them, was Re: on the verge of … David Wright <deblis@lionunicorn.co.uk> - 2021-03-09 22:00 +0100
                Re: Modem MACs and how ISPs view them, was Re: on the verge of … Nicholas Geovanis <nickgeovanis@gmail.com> - 2021-03-09 22:20 +0100
                Re: Modem MACs and how ISPs view them, was Re: on the verge of … IL Ka <kazakevichilya@gmail.com> - 2021-03-10 00:10 +0100
                Re: Modem MACs and how ISPs view them, was Re: on the verge of   … rhkramer@gmail.com - 2021-03-10 00:20 +0100
          Re: on the verge of shopping for new desktop hardware, recommendations? IL Ka <kazakevichilya@gmail.com> - 2021-03-08 01:30 +0100
            Re: on the verge of shopping for new desktop hardware, recommendations? Dan Hitt <dan.hitt@gmail.com> - 2021-03-08 01:40 +0100
              Re: on the verge of shopping for new desktop hardware, recommendations? IL Ka <kazakevichilya@gmail.com> - 2021-03-08 01:50 +0100
                Re: on the verge of shopping for new desktop hardware, recommendations? IL Ka <kazakevichilya@gmail.com> - 2021-03-08 02:00 +0100
                Re: on the verge of shopping for new desktop hardware, recommendations? Dan Hitt <dan.hitt@gmail.com> - 2021-03-08 02:10 +0100
                Re: on the verge of shopping for new desktop hardware,  recommendations? Felix Miata <mrmazda@earthlink.net> - 2021-03-08 02:40 +0100
                Re: on the verge of shopping for new desktop hardware, recommendations? IL Ka <kazakevichilya@gmail.com> - 2021-03-08 02:40 +0100
                Re: on the verge of shopping for new desktop hardware, recommendations? Anssi Saari <as@sci.fi> - 2021-03-08 18:30 +0100
                Re: on the verge of shopping for new desktop hardware, recommendations? Dan Hitt <dan.hitt@gmail.com> - 2021-03-08 02:00 +0100
              Re: on the verge of shopping for new desktop hardware,  recommendations? Andrei POPESCU <andreimpopescu@gmail.com> - 2021-03-09 11:20 +0100
            Re: on the verge of shopping for new desktop hardware,  recommendations? Doug McGarrett <dmcgarrett@optonline.net> - 2021-03-08 09:20 +0100
              Re: on the verge of shopping for new desktop hardware, recommendations? IL Ka <kazakevichilya@gmail.com> - 2021-03-08 14:00 +0100
          Re: on the verge of shopping for new desktop hardware,  recommendations? David Christensen <dpchrist@holgerdanske.com> - 2021-03-08 01:30 +0100
            Re: on the verge of shopping for new desktop hardware, recommendations? Dan Hitt <dan.hitt@gmail.com> - 2021-03-08 01:50 +0100
              Re: on the verge of shopping for new desktop hardware,  recommendations? David Christensen <dpchrist@holgerdanske.com> - 2021-03-08 02:30 +0100
                Re: on the verge of shopping for new desktop hardware, recommendations? Dan Hitt <dan.hitt@gmail.com> - 2021-03-08 04:10 +0100
                Re: on the verge of shopping for new desktop hardware,  recommendations? David Christensen <dpchrist@holgerdanske.com> - 2021-03-08 22:20 +0100
                Re: on the verge of shopping for new desktop hardware,  recommendations? Felix Miata <mrmazda@earthlink.net> - 2021-03-08 23:00 +0100
                Re: on the verge of shopping for new desktop hardware, recommendations? Dan Hitt <dan.hitt@gmail.com> - 2021-03-10 00:20 +0100
                Re: on the verge of shopping for new desktop hardware,  recommendations? David Christensen <dpchrist@holgerdanske.com> - 2021-03-10 01:00 +0100
                Re: on the verge of shopping for new desktop hardware, recommendations? Dan Hitt <dan.hitt@gmail.com> - 2021-03-10 01:30 +0100
                Re: on the verge of shopping for new desktop hardware,  recommendations? David Christensen <dpchrist@holgerdanske.com> - 2021-03-10 03:30 +0100
                Re: on the verge of shopping for new desktop hardware,  recommendations? Doug McGarrett <dmcgarrett@optonline.net> - 2021-03-10 06:20 +0100
        Re: on the verge of shopping for new desktop hardware,  recommendations? Dan Ritter <dsr@randomstring.org> - 2021-03-08 20:40 +0100
          Re: on the verge of shopping for new desktop hardware,  recommendations? David Christensen <dpchrist@holgerdanske.com> - 2021-03-08 23:10 +0100
  Re: on the verge of shopping for new desktop hardware, recommendations? ghe2001 <ghe2001@protonmail.com> - 2021-03-07 20:10 +0100
    Re: on the verge of shopping for new desktop hardware,  recommendations? David Christensen <dpchrist@holgerdanske.com> - 2021-03-07 20:50 +0100
      Re: on the verge of shopping for new desktop hardware, recommendations? deloptes <deloptes@gmail.com> - 2021-03-07 22:00 +0100
        Re: on the verge of shopping for new desktop hardware, recommendations? The Wanderer <wanderer@fastmail.fm> - 2021-03-07 22:10 +0100
          Re: on the verge of shopping for new desktop hardware,  recommendations? "Andrew M.A. Cater" <amacater@einval.com> - 2021-03-07 22:30 +0100
            Re: on the verge of shopping for new desktop hardware, recommendations? deloptes <deloptes@gmail.com> - 2021-03-07 22:50 +0100
            Re: on the verge of shopping for new desktop hardware, recommendations? The Wanderer <wanderer@fastmail.fm> - 2021-03-07 22:50 +0100
        Re: on the verge of shopping for new desktop hardware,  recommendations? David Christensen <dpchrist@holgerdanske.com> - 2021-03-08 01:10 +0100
          Re: on the verge of shopping for new desktop hardware, recommendations? The Wanderer <wanderer@fastmail.fm> - 2021-03-08 01:20 +0100
            Re: on the verge of shopping for new desktop hardware,  recommendations? Felix Miata <mrmazda@earthlink.net> - 2021-03-08 01:40 +0100
              Re: on the verge of shopping for new desktop hardware,  recommendations? David Wright <deblis@lionunicorn.co.uk> - 2021-03-08 03:00 +0100
                Re: on the verge of shopping for new desktop hardware,          recommendations? Linux-Fan <Ma_Sys.ma@web.de> - 2021-03-08 03:40 +0100
                Re: on the verge of shopping for new desktop hardware,  recommendations? Felix Miata <mrmazda@earthlink.net> - 2021-03-08 05:00 +0100
                Re: on the verge of shopping for new desktop hardware, recommendations? The Wanderer <wanderer@fastmail.fm> - 2021-03-08 11:40 +0100
                Re: on the verge of shopping for new desktop hardware,  recommendations? songbird <songbird@anthive.com> - 2021-03-08 14:40 +0100
                Re: on the verge of shopping for new desktop hardware,  recommendations? Peter Ehlert <peter@sdi-baja.com> - 2021-03-08 15:10 +0100
                power limiting via system controls (was: on the verge of ... songbird <songbird@anthive.com> - 2021-03-08 17:20 +0100
                Re: power limiting via system controls (was: on the verge of ... Dan Ritter <dsr@randomstring.org> - 2021-03-08 18:10 +0100
                Re: power limiting via system controls (was: on the verge of ... songbird <songbird@anthive.com> - 2021-03-09 02:10 +0100
                Re: power limiting via system controls (was: on the verge of ... David Christensen <dpchrist@holgerdanske.com> - 2021-03-08 22:40 +0100
                Re: power limiting via system controls (was: on the verge of ... songbird <songbird@anthive.com> - 2021-03-09 02:20 +0100
                Re: on the verge of shopping for new desktop hardware,  recommendations? David Christensen <dpchrist@holgerdanske.com> - 2021-03-08 23:40 +0100
                Re: on the verge of shopping for new desktop hardware,  recommendations? Tixy <tixy@yxit.co.uk> - 2021-03-08 19:40 +0100
                Re: on the verge of shopping for new desktop hardware,          recommendations? Linux-Fan <Ma_Sys.ma@web.de> - 2021-03-08 21:20 +0100
                Re: on the verge of shopping for new desktop hardware,  recommendations? Tixy <tixy@yxit.co.uk> - 2021-03-09 09:10 +0100
                Re: on the verge of shopping for new desktop hardware, recommendations? The Wanderer <wanderer@fastmail.fm> - 2021-03-08 11:40 +0100
                Re: on the verge of shopping for new desktop hardware,          recommendations? Linux-Fan <Ma_Sys.ma@web.de> - 2021-03-08 13:10 +0100
                Re: on the verge of shopping for new desktop hardware, recommendations? The Wanderer <wanderer@fastmail.fm> - 2021-03-08 11:40 +0100
            Re: on the verge of shopping for new desktop hardware,  recommendations? David Christensen <dpchrist@holgerdanske.com> - 2021-03-08 01:40 +0100

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