gold paste how good is it ??

[skywalker[TSG]]

hmm ive been making this paste for my celerons out of a old 24carat gold ring that i have
i just took 3parts gold dust and 1part thermal compound and mixed it so that it contains a whole bunch of gold

will this paste be really good or will it suck ?

anything i should think of when applying it to the CPUs ? ?

[wtp]

oh my god, hehe, making own things?? don't kill your CPU now. I heard gold wasn't good, but silver is. Too bad you didn't use silver. Watcha gonna do with that gold? http://sysopt.earthweb.com/forum/smile.gif

[hmf]

As a matter of a fact I think gold is an isolator (ex: the protection between the hood and the motor of a maclaren f1 it's gold), a good electric conductor is not a good heat one.

Ps : But i'm not sure !!!!!!

[skywalker[TSG]]

hehe wery funny

hmm i think gold is better
but im not sure

[wtp]

i'm pretty sure gold isn't good, i looked at my science book, the best is silver. http://sysopt.earthweb.com/forum/smile.gif school is good! now i know which is best. gold is more better in conducting electricity than heat.

[skywalker[TSG]]

darn it
120$down the drain

[wtp]

LOL, http://sysopt.earthweb.com/forum/smile.gif should of studied harder when you were in school huh, http://sysopt.earthweb.com/forum/smile.gif

dvd laser... blown up coppermine...

http://sysopt.earthweb.com/forum/smile.gif wtp

[narayan]

Yet another entry in the Skywalker saga... http://sysopt.earthweb.com/forum/wink.gif

[Mntsnow]

Can't wait to hear whats next http://sysopt.earthweb.com/forum/wink.gif

Mntsnow

[Virtual Infinity]

One thing to be careful of when using electrically conducting compounds instead of your usual zinc oxide mixes. Be VERY careful not to spead any paste where it can conduct electricity. The effects I think will be obvious.

[skywalker[TSG]]

but hmmm plycon sells gold paste so it has to work or ?

what i remember from school is that
platina is the best heat transfer material
then comes gold and silver followed by copper and aluminium

am i wrong here or ? ?

[wtp]

well, tell me what is the best in disipating heat, and conducting heat, without having to combine copper and aluminum. http://sysopt.earthweb.com/forum/smile.gif hehe, i told u already http://sysopt.earthweb.com/forum/smile.gif

wtp

[krusty the klown]

Matt black objects are best at dissipating (radiating) heat, because they behave like 'black body' objects.

Gold is the best reflector, that's why they use it on the McLaren F1's engine bay.

Silver is the best conductor. (so matt black silver heatsinks should be good - but not good on ur wallet http://sysopt.earthweb.com/forum/smile.gif )


EDIT: dunno about platinum... I do know it makes gold look cheap, so.......

Aluminium is a reasonable conductor, but not as good as copper or silver. Aluminium is used to make heatsinks because it has reasonable thermal properties, it is cheap and (probably most of all) it is easy to extrude: virtually all mass produced heatsinks are extruded - it you look closely, you can see the marks from the extrusion die.

OK, the deb8 about aluminium being the best dissipator of heat - a material's absolute ability to radiate heat depends on its surface area and its colour (e.g. shiny vs. black). The material's actual ability to lose heat depends on these factors and the temperature difference between object and surroundings and any air (more correctly, fluid) flow over the surface of the object.

So, why will a lump of aluminium placed in boiling water cool down quicker than a lump of copper or silver (better thermal conductors than aluminium) of the same dimensions, when the lumps of hot metal are placed in cool surroundings???? It is not because aluminium is a better dissipator of heat, it it because of specific heat capacity (SHC)

Specific heat capacity is the amount of energy required to raise a unit mass of material through a unit temperature, hence has dimensions of Joules/deg. C/kg. Now, back to our blocks of metal... there are two factors here: aluminium has a lower density than the other two metals, so the lump of aluminium weighs less than the others, which means that the lump of aluminium stores less thermal energy than the others. As it stores less energy, it will cool down quicker. Secondly, aluminium has a lower SHC than the other two, which also means it stores less energy, so cools down quicker.

So, the ideal heatsink would be silver (to conduct heat away from the chip efficiently), with a large surface area (to get efficient heat exchange) and painted with a thin coat of matt black paint (also to assist heat radiation). Copper would make a reasonable compromise 'cos it's cheaper, but still too expensive to use and machine for the mass-production market, so it's only used by specialist manufacturers (and home enthusiasts http://sysopt.earthweb.com/forum/smile.gif ).



[This message has been edited by krusty the klown (edited 05-10-2000).]

[CMonster]

Now you guys give skywalker a break - that is probably the way he sees things through those coke-bottle glasses after blinding himself on a CDROM -

[Brydon]

I'm starting to worry about his sisters computer http://sysopt.earthweb.com/forum/wink.gif. Leave it alone it never hurt you (yet) http://sysopt.earthweb.com/forum/wink.gif

[tepo]

C'mon guys/gals !

Don't be cruel to skywalker... We all learn something don't we....? Alltough I have to admit the "cd-burning" was a good one...LOL!

Tepo http://sysopt.earthweb.com/forum/smile.gif

[LJE2]

Gold is one of the best electrical conductors, if not the best, followed in second by Silver, (why do you think Gold plated stereo jack are used in high end equipment, and Gold plated pins on more expensive RAM) The reason it is not used more often is the cost is prohibitive, I don't know about it's heat conductive properties though.

[wtp]

no offense but... TOLD YA http://sysopt.earthweb.com/forum/smile.gif

wtp

[krusty the klown]

I thought gold was used on stereo jacks 'cos it doesn't oxidize (tarnish or rust).

There's such a thin coating of gold on the jacks (for a good reason - cost!) that it won't make any difference to the overall resistance of the phono lead (or whatever lead).

Some nasty rust and tarnish would have an effect on the lead's performance tho.

[krusty the klown]

http://chemistry.about.com/education/chemistry/library/blag9.htm?iam=ask&terms=properties+of+silver

[skywalker[TSG]]

darn this bullying ive just had a stroke of bad luck but come on guys its not funny anymmore http://sysopt.earthweb.com/forum/frown.gif *crying*

LoL

hmm im gona kill my buddy who told me that gold was the best heat conductor out there
hmm what about kevlar paste hehe LoL

[krusty the klown]

Why not melt the gold dust down and make a ring out of it again LOL http://sysopt.earthweb.com/forum/smile.gif http://sysopt.earthweb.com/forum/smile.gif

EDIT: Don't burn yourself hehe!!!!!!


[This message has been edited by krusty the klown (edited 05-11-2000).]

[Brydon]

skywalker[TSG]..you are a good sport and I honestly hope you don't have any more bad luck http://sysopt.earthweb.com/forum/smile.gif. What about those silver quarters or whatever they are...can't you get some filings from one of those.

[Keermalec]

This is a really good one.

Melt it down quick before your wife realises what you've done to your wedding ring, lol.
And don't be too harsh on your buddy, he probably never thought you'd really do it...

rotfl


[This message has been edited by Keermalec (edited 05-11-2000).]

[skywalker[TSG]]

me gona try silver today

[krusty the klown]

Noooooooooooooooooooooooooooooooooo!

Hehehe!

How do you make the metal powder??

http://sysopt.earthweb.com/forum/smile.gif http://sysopt.earthweb.com/forum/smile.gif

[Brydon]

There go his sisters silver ear-rings http://sysopt.earthweb.com/forum/wink.gif

[Brydon]

I've been thinking about this a little. You know how you can get sheets of gold leaf..well what about a piece of silver leaf the same size as the cpu slug inbetween the heatsink and cpu. I bet as it is so thin it would give really good heat transfer and give a high contact area between the two surfaces. Food for thought Skywalker http://sysopt.earthweb.com/forum/smile.gif

[krusty the klown]

Has this thread made me chuckle?

Does mouse $h!t roll, hehe!

No, it is wrong to laugh, but......

Hey, Skywalker, I have to admire your determination... If I'd have had the run of bad luck that you've had with puters, I'd have taken to using wax crayons and paper....Errrrr.... you could melt the wax down, put some silver powder in it..... hehehehehehehehehehehehehehehe!

Sorry.... but this is a gem.....

or WAS(!)...... hehehehehe.....

Sorry, again, but once I get the giggles...hehe!!!

LOL http://sysopt.earthweb.com/forum/smile.gif http://sysopt.earthweb.com/forum/smile.gif

Krusty.

[Brydon]

lol I know what you mean krusty..my eyes light when I see a new Skywalker thread as I know I will be giggling by the end of it http://sysopt.earthweb.com/forum/smile.gif. I reckon he should have one of those mini soaps made about his daily exploits as he seeks to push back the envelope..lol. I can just see him in his room with a grinder and all his mums silver cutlery etc. making a huge pile of silver dust lol http://sysopt.earthweb.com/forum/wink.gif. He has cheered me up and I honestly admire his perseverence which will carry him far in life though maybe not in computing http://sysopt.earthweb.com/forum/smile.gif. Go get em skywalker http://sysopt.earthweb.com/forum/wink.gif.

[Chainsaw]

It would appear that Silver is the best thermal conductor, then Copper, then Gold, then Aluminum.

http://environmentalchemistry.com/yogi/periodic/thermal.html

c:::CHNsaw

~edit~ How about a Silver/Silicon paste... kinda messy (and if it ever gets on your pcba will short something out for sure), but might work not only to conduct heat but to hold on your heatsink too.

This could be a big seller...Skywalker, maybe you shouldn't try this with your luck...who knows what could happen? LOL http://sysopt.earthweb.com/forum/wink.gif

[This message has been edited by Chainsaw (edited 05-12-2000).]

[skywalker[TSG]]

thanks chainsaw

2.37 W/cmK Aluminum Al 13
3.17 W/cmK Gold Au 79
4.01 W/cmK Copper Cu 29
4.29 W/cmK Silver Ag 47
this is what your link said so i guess gold will work

[Chainsaw]

Keep us posted how the experiment goes Skywalker.
Later,
c:::CHNsaw

[AuraEdge]

U know that huge reply Krusty made on this thread? he was right on the dot. Alot of the stuff I was gunna say myself, but, of course, id just be repeating things, and not as well.
Taking physics this year, we learned about the conductivity of things (and it was kinda cool seeing the peltier effect in my textbook).

Skywalker - BUY the stuff! Please! http://sysopt.earthweb.com/forum/smile.gif


[This message has been edited by AuraEdge (edited 05-12-2000).]

[krusty the klown]

Hehehehehehehe!

Apologies in advance if I offend anybody (A couple of bottlez of wine worse 4 wear)

But this gets better and better http://sysopt.earthweb.com/forum/smile.gif http://sysopt.earthweb.com/forum/smile.gif http://sysopt.earthweb.com/forum/smile.gif http://sysopt.earthweb.com/forum/smile.gif

LOL

[Brydon]

http://sysopt.earthweb.com/forum/wink.gif