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Mercury instead of Artic silver IV?

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April 30, 2006 1:30:59 PM

Mercury is a metal used in to measure temperatures in Thermometers , it is liquid at room temp has reasonably high boiling point.

Would spread easily over a cpu would conduct heat very very well.

It is toxic to humans will absorb though skin and will accumulate in your body for the rest of your life.... However the potential benefits are worth it in my opnion. hahahha

Would be very easy to get mercury (just buy a thermometer from a pharmacy) break it open etc .

Has anybody tried it (hopefully with a set of nitrile gloves)

More about : mercury artic silver

April 30, 2006 2:28:22 PM

Interestingly, mercury has greater than twice the thermal conductivity of copper. Unfortuneately, it's surface tension is extremely high (this is why it beads on table tops), so I highly doubt that it would make good thermal compound. Basically rather than spreading evenly between two surfaces, it would try to bead like crazy, and you'd probably end out with air pockets, and /or tiny beads of liquid metal in the crevices of your motherboard.

Anyway, even if you could do this successfully, nitrile gloves won't stop mercury. Rather, the mercury will pass through the gloves, and get partially trapped against your skin. Also, mercury poisoning can be caused by inhaling the vapours that would be present from having it open in your house.

Finally, mercury poisoning is disgusting. You're looking at birth defects, insanity, cancer, and death. I would never have open mercury in my house, for any reason. I don't know if you've ever tried to clean up a mercury spill, but it's not a good situation.
April 30, 2006 2:30:56 PM

yah, ppl arent crazy, but sone noob is gonna try it. i wouldnt.
i'd spend 5 dollars on soem AS5 and keep my life
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April 30, 2006 2:40:48 PM

I've met some people from other countries that don't think of things like mercury as being the end of the world... pretty weird culture shock.

Funny thing happened one time, I was working in a chemistry lab with a guy from China. Basically benzene is toxic as shit and causes cancer, so people here are really careful / try to avoid using it. Another chemical I used alot, hexane, is basically a gasoline byproduct, so people didn't really worry about it, and basically just poured it all over the place.

This Chineese guy was saying that it was funny, because when he was in China everyone was really careful with hexane, and nobody cared about using benzene, which was the opposite of what we were doing. Anyway, I checked it out, and it turned out that hexane was a friggin neurotoxin, so I guess he was right to think that we were all crazy. Doesn't change the fact that benzene is like liquid death though...
April 30, 2006 3:22:52 PM

Liquid metal applied to a vertical surface. Aside from the obvious health implications, this just screams bad idea. You would basically be gambling that surface tension is going to keep the mercury from slipping out when the case gets bumped. The ensuing shorts as it hits traces would be worth a video.
April 30, 2006 3:56:06 PM

Yeah seriously.

I don't know why people post this kind of ridiclious nonsense on here, or why I gave it an actual response. I guess it seemed a little less idiotic when I saw that mercury had such a high thermal conductivity (8.4 W/m/K for mercury, compared to 4.0 W/m/K for copper, and 2.4 W/m/K for aluminum).
April 30, 2006 4:48:12 PM

You can kill the surface tension of mercury with clorox bleach.... but I still wouldnt recomend using it in this manner lol
April 30, 2006 4:55:33 PM

Bleach, another highly toxic chemical.
April 30, 2006 5:24:03 PM

You over looked one important fact.
Hg has a vapor point around 68F. Any heat what so ever would vaporize it.
April 30, 2006 5:25:40 PM

I saw that stuff. Looks like perma-weld for your cpu and heatsink. Now if the needle would fit in my boss' deskchair...
April 30, 2006 5:36:22 PM

Quote:
I saw that stuff. Looks like perma-weld for your cpu and heatsink. Now if the needle would fit in my boss' deskchair...


Smart thinking!

:lol:  :lol:  :lol:  yep, highly toxic also good for assasinating your boss! :lol:  :lol:  :lol: 


Anyways, I read some reviews on it and it is only about 2-3c* lower temps compare to Artic Silver 5. Judging from benifit/risk ratio, I'll stick with my Artic Silver 5.
a c 84 ) Power supply
April 30, 2006 6:03:44 PM

Quote:
Yeah seriously.

I don't know why people post this kind of ridiclious nonsense on here, or why I gave it an actual response. I guess it seemed a little less idiotic when I saw that mercury had such a high thermal conductivity (8.4 W/m/K for mercury, compared to 4.0 W/m/K for copper, and 2.4 W/m/K for aluminum).


Why are you listing the metals found in heatsinks? We are talking about TIM here, not heatsinks. AS5 should be made from SILVER. If I remember my highschool chem, silver has one of the best thermal conducting abilities when compared to most metels, including gold. (gold is better for electricity.) There are a few metals better then silver, but they are either toxic, or so rarer that they would be much to expensive to use in computing. (I've never bothered to check this, I'm assuming my HS chem teacher wasn't lying....)
April 30, 2006 6:35:36 PM

to be honest i would keep way away from mercury, i once gropped a thermometer on the carped and it broke, it took me a very long time to get it out of the carper(very messy those litle beads are:(  ), using it as thermal paste as others mentioned is not so great, but what about using it in a contained enviroment , such as a water cooling system( just with mercury instead of the cooling liquid) didnt nvidia do this for one of their graphic card coolers? not necessarely with mercury, they used something they called liquid metal, but to be honest i know of no other "liquid metals" so i would assume they might have used mercury, but then yet again they claimed its not toxic, so maby it was some other substance.
April 30, 2006 6:38:06 PM

They should make synthetic diamond paste :)  I hear diamond is a very good conductor of heat.
a c 84 ) Power supply
April 30, 2006 6:45:30 PM

Quote:
They should make synthetic diamond paste :)  I hear diamond is a very good conductor of heat.

Oh sure, just come up with the formula to make it a liquid, and start selling it for $75/4oz...

The next thing you'd have to worry about are all those cheap CZ nockoff companies...
April 30, 2006 7:01:10 PM

Some ancient cultures used to ingest mercury.

IIRC at least one Chinese emperor died of mercury poisoning.

Mercury sure is great stuff, I highly recommend it.

NOT

There are much better ways to cool your CPU. Forget about it.
April 30, 2006 7:29:08 PM

Yeah, the guy took it regularly, I think it spaced him out. .....he finally spaced out....forever.
April 30, 2006 7:43:40 PM

Quote:
Yeah, the guy took it regularly, I think it spaced him out. .....he finally spaced out....forever.



Aye.

Mercury will drive you mad at first and then kill you.
April 30, 2006 8:01:37 PM

Mercury evaporates at room temperature (albeit a warm one!), so while it would make a great conductor, it wont hang aroundvery long......
April 30, 2006 8:28:18 PM

Quote:
They should make synthetic diamond paste :)  I hear diamond is a very good conductor of heat.

Oh sure, just come up with the formula to make it a liquid, and start selling it for $75/4oz...

The next thing you'd have to worry about are all those cheap CZ nockoff companies...

LOL CZ !!!! maybe Carbon 60 although it would be more of a powder you would need something to turn it into a paste... maybe silicon or something ? its all theory anyway becouse by the time arctic silver doesnt work "good enough" CPU's will be using quantum states lol
April 30, 2006 9:41:35 PM

Mercury will dissolve the Al203 oxide coating on Aluminium which will cause your nice Shiny Auminium Heatsink to rust away entirely in no time at all -mercury is banned in quantity from aircraft (mostly aluminium) for exactly this reason.
see this link here

Stuart
April 30, 2006 10:03:28 PM

Quote:
Check out this thermal coumpound. It's good but highly toxic.

http://www.frozencpu.com/thr-26.html


Looks like its a Mercury-based amalgam (think dental work). Interesting idea.
April 30, 2006 10:08:40 PM

Quote:
Check out this thermal coumpound. It's good but highly toxic.

http://www.frozencpu.com/thr-26.html


Looks like its a Mercury-based amalgam (think dental work). Interesting idea.


I'm surprised that stuff is legal given how corrosive and toxic it is.
April 30, 2006 11:03:52 PM

Yes yes I undersatnd mercury is toxic this is a well established fact. Mad Hatters, mercury used to clean Top Hats people wering the hats went nuts etc etc, Queen Elizabeth used mercury in her cosmetics and lost a lot of hair etc etc.

However I wouldnt exactly eat a tube of artic silver either.

Thanks to you all I appreciate all the feed back.

The liquid pro stuff looks kinda cool just like mercury!

Gold can be made into gold leaf ie very thin 2.5-4 Amstrongs thick (correct me if im wrong)?
Gold is a great conductor of heat.
It could be made thin enough to fit between the CPU and HSF and soft enough to, fit into all nooks and crannys.
Wouldnt cost a lot because you only need a tiny amout.
Gold is not toxic!

See the things you must ponder when you buy a prescot P4 3.4?
a c 84 ) Power supply
May 1, 2006 5:22:12 AM

I wouldn't switch to using gold, as its K value is lower then silver. On the list of metals that I found online, the only substance higher then silver that was listed was diamonds. (and by higher, I mean HIGHER!!!!! It wasn't even close.) Gold, copper, etc, all conduct heat, but nowhere near as well as silver.

I seriously had no idea about diamonds. I wonder why people haven't bought low grade dirty diamonds and found a way to make a paste from it. It would be a much better TIM. (probably because even low grade junk diamonds are more expensive then silver...)
May 1, 2006 6:00:20 AM

Yep, silver is very good thermal conductor and gold is a good but best at electrical conduction. That's why Artice Silver 5 is very good and combined with other compounds a made it almost non-electrical conductive. Diamonds are not just conductive but suck out heat as well, if you have a bunch of diamonds like necklace and stuff and place in your mouth and it will be freezing in less than a minute. However, they are pretty expensive and industrial wise are mostly used in cutting/drilling tools. So that leaves the silver as the most viable thermal conductor as it is safe and less expensive.
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