Article: What Do Overclockers and Supercomputers Have in Common?
By: David Kanter (, June 22, 2011 3:26 pm
Room: Moderated Discussions
Ed Trice ( on 6/22/11 wrote:

Welcome to our forums!

>On the last page of the article, there was mention of "lowering the CPU temperature
>with liquid nitrogen or a Peltier to around 5C could yield >even larger gains" but this is in need of some rephrasing.

Fair enough, I made a correction.

>We've worked with liquid nitrogen a fair amount, and temps are closer to -200C (see
>for example).

When you say -200C, what are you measuring? I'm talking about the junction temperature of the chip. I suspect you may be talking about something else, since I think silicon behaves oddly at those temperatures. But perhaps I'm wrong...

>As for Peltier Cooling, our experience has shown that you can't get more than a
>40C difference compared to the ambient temperature.

A peltier is a heat exchanger, there's no reason why it needs to simply use the air to dump out heat. What about a Peltier that pumps heat to the liquid nitrogen? You could get a much larger surface area that way.

>So, it would be much easier
>for a Peltier device to hit 5C in the winter somewhere >cool than in the heat of summer.

>Peltier devices are also very inefficient. It costs you >about 10 times as much
>power to remove the "heat equivalent." By that I mean to >pull away 50 Watts worth
>of heat would cost you 500 Watts worth of input power. >Clearly, this is not the way to go.

I'd agree with that, but it's an option.

< Previous Post in ThreadNext Post in Thread >
TopicPosted ByDate
Article: Cooling and performance/wattDavid Kanter2011/06/21 12:19 PM
  'temperature' not 'power'?Paul A. Clayton2011/06/21 03:01 PM
    'temperature' not 'power'?David Kanter2011/06/21 03:38 PM
  resistance(temperature)Moritz2011/06/22 04:48 AM
    resistance(temperature)Adrian2011/06/22 05:13 AM
      resistance(temperature)David Hess2011/06/22 08:53 AM
        resistance(temperature)Adrian2011/06/24 02:24 AM
          resistance(temperature)David Hess2011/06/24 02:14 PM
  Article: Cooling and performance/wattEd Trice2011/06/22 10:57 AM
    CoolingDavid Kanter2011/06/22 03:26 PM
      CoolingEd Trice2011/06/22 03:54 PM
      TE-elementsMoritz2011/06/23 05:55 AM
        Radiator placement and designRicardo B2011/06/23 07:34 AM
        TE-elementsEduardoS2011/06/23 04:21 PM
          water/airMoritz2011/06/23 10:30 PM
            water/airRicardo B2011/06/24 02:29 PM
              water/airbakaneko2011/06/24 09:45 PM
                water/airDavid Hess2011/06/25 04:12 AM
                water/airRicardo B2011/06/25 06:07 AM
                  water/airZaZa2011/06/25 09:47 AM
                    water/airRicardo B2011/06/25 11:40 AM
                      water/airrwessel2011/06/26 03:43 AM
                      water/airZaZa2011/06/26 04:05 PM
  Temperature inversionJonathan Kang2011/06/22 05:43 PM
    LN2 overclockingDoug Siebert2011/06/25 01:32 PM
    Temperature inversionVincent Diepeveen2011/06/27 01:01 PM
    Temperature inversionAnon2011/06/28 03:30 PM
      Temperature inversionJonathan Kang2011/07/05 06:38 PM
  Article: Cooling and performance/watt(tm)2011/06/27 05:51 AM
  Article: Cooling and performance/wattDavid2011/10/15 06:14 PM
    Article: Cooling and performance/wattrwessel2011/10/15 09:56 PM
  Exponential growth of subthreshold leakageKonrad Schwarz2011/12/15 07:56 AM
    Exponential growth of subthreshold leakageRohit2011/12/15 01:22 PM
      Exponential growth of subthreshold leakageDavid Kanter2011/12/15 04:20 PM
        Exponential growth of subthreshold leakageIain McClatchie2013/01/07 12:28 AM
          Exponential growth of subthreshold leakageDoug S2013/01/07 10:25 AM
          Exponential growth of subthreshold leakagesomeone2013/01/07 11:12 PM
  Article: Cooling and performance/wattRobert Pearson2021/07/26 09:45 AM
Reply to this Topic
Body: No Text
How do you spell tangerine? 🍊