[ExI] homebrew cold freon bath super computer

[spike]

>... On Behalf Of Mike Dougherty
Subject: Re: [ExI] homebrew cold freon bath super computer

On Fri, Mar 9, 2012 at 8:38 PM, spike <spike66 at att.net> wrote:
>> Hard to say.  If I invest in 100 of these and want them in close 
> quarters, I need a major power supply.  I would think it would require 
> a home refrigerator scale cooling system.

>...Are they going to be sufficiently faster if they're in a 1 cubic meter
volume than 10 meters apart?

That I don't know, but the motive for the whole immersion notion is not
about speed but rather about room.  If I want to run 100 computers, I don't
want them scattered all over my house, don’t even want them in a big breezy
rack.  I would go for something the size of a gallon of milk, residing
permanently in my fridge.  I would sacrifice some cabinet space to house the
100 watt power supply too.

>...BOTECs on how long it'll take for solar-powered computering mesh to pay
for itself doing "odd jobs"?  (consult Farmer's Almanac for your local area
average solar input)  ...Mike

_______________________________________________

They can do it now.  Consider that cell phone at the chess tournament.  It
played a dozen games, winning 11 and drawing 1, so clearly it didn't run out
of battery charge.  The rules of its participation required that it not be
plugged into a charger, to help insure it wasn't somehow rigged to get
signals through the wire.  The best lithium ion batteries are rated at about
250 wh/kg and a phone battery is about 12 grams, so that comes out close to
3 watt hours.  Another source tells me a Li-ion has a capacity of 700 mAh at
3.7 volts, and that also comes out to about 3 watt hours almost, and a
typical chess game at top level is about three hours, so that phone is doing
all those calcs for about a watt on the high end.  So my reasoning is that
you could keep a stack of 100 of them in your refrigerator, with the power
source outside.  I think a typical refrigerator can handle a 100 watt heat
load, although I would need to check that.  I could just get a 100 watt
incandescent bulb and put it in there, see if everything stays cold.

Has anyone a link to how much power a typical cell phone processor needs?

spike