[quote=cheesehead;143762]
Tom's Hardware did one with cooking oil (but that turns rancid after a while) a few years ago: [URL]http://www.tomshardware.com/reviews/strip-fans,1203.html[/URL].[/quote]

You beat me to it. I was just going to link to that. The truth is that either mineral oil or vegetable oil would eventually strip away some of the plastic shielding around wires or capacitors, etc, and so this cannot be a long term solution.

There are quite few DIY videos on youtube now, and one with some women demonstrating the method on tv:
[url]http://www.youtube.com/watch?v=t8shVDvMdo4[/url]

I saw a demonstration someplace with de-ionized water. It worked for a couple hours before enough ions appeared in the water to cause a short.

[quote=cheesehead;143762]Crucial properties of mineral oil are that it is electrically nonconductive and chemically nonreactive with the parts it contacts. (In water-cooled systems, the water _must_ be completely contained in plumbing and not allowed to directly contact any circuitry.)

Instructions are here: [URL]http://www.pugetsystems.com/submerged.php[/URL].

Tom's Hardware did one with cooking oil (but that turns rancid after a while) a few years ago: [URL]http://www.tomshardware.com/reviews/strip-fans,1203.html[/URL].[/quote]

[quote=uigrad;143768]You beat me to it. I was just going to link to that. The truth is that either mineral oil or vegetable oil would eventually strip away some of the plastic shielding around wires or capacitors, etc, and so this cannot be a long term solution.

There are quite few DIY videos on youtube now, and one with some women demonstrating the method on tv:
[URL]http://www.youtube.com/watch?v=t8shVDvMdo4[/URL]

I saw a demonstration someplace with de-ionized water. It worked for a couple hours before enough ions appeared in the water to cause a short.[/quote]
Ah, I see--thanks for the links, they're quite interesting, especially the first one from cheesehead's post. I guess that answers my question as to how practical this would actually be since it just kept the CPU at 88 degrees Celsius--it seems that a radiator would definitely be a must if one wanted to use this thing for an always-full-load application such as distributed computing. :smile:

... you pray for the ghost of Euclid to come and punish all writers who claim the largest prime has been found.

(just found this in internet)

...you build one of these (preferably the 3rd one) for crunching:

[URL="http://helmer.sfe.se/"]Helmer I[/URL]

[URL="http://helmer2.sfe.se/"]Helmer II[/URL]

[URL="http://helmer3.sfe.se/"]Helmer III[/URL].

- and you build a nuclear powerplant to power Helmer III. :wink:

You only keep raffle tickets with prime numbers, even though it greatly reduces your chances of winning.

[quote=ixfd64;144372]You only keep raffle tickets with prime numbers, even though it greatly reduces your chances of winning.[/quote]... You feel compelled to explain that: Of course the chance of winning with an all-prime ticket is the same as the chance of winning with a ticket bearing some or all composites, but by discarding the latter you've increased your cost of obtaining the former. And by discarding the latter, you eliminate your chances to win with one of them, though it doesn't change the chance of winning with the all-primes ticket.

[QUOTE]...you build one of these (preferably the 3rd one) for crunching:

Helmer I

Helmer II

Helmer III.

- and you build a nuclear powerplant to power Helmer III. [/QUOTE]

:shock: *Wants!*

EDIT: Why's this guy using them for rendering anyway??

[QUOTE=roger;144446]:shock: *Wants!*

EDIT: Why's this guy using them for rendering anyway??[/QUOTE]A 3-D TV show. It is being done in a 4000x4000 pixel format.

Ah. Although on his website it said it took overnight to render a single scene on his old computer (which, considering his newer one, must still be pretty decent). Either the objects being rendered were incredibly complicated, or the lighting/shadows etc, or some other problem that I don't know about.

[QUOTE=roger;144511]Ah. Although on his website it said it took overnight to render a single scene on his old computer (which, considering his newer one, must still be pretty decent). Either the objects being rendered were incredibly complicated, or the lighting/shadows etc, or some other problem that I don't know about.[/QUOTE]

I'm pretty sure he doesn't use POV-Ray. That way he would better "distribute" his work. :smile:

Luigi

... you put in an advance order for the Pool PC ([URL]http://home.howstuffworks.com/10-wacky-home-inventions9.htm[/URL]) so you can take advantage of its watercooling to overclock it.