Cpu Scrap Au Recovery

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Index » Gold » Gold CPU Recycling Yields And Values.

2010-06-19 12:45:10

Gold CPU Recycling Yields And Values.

Did you know that there is gold in many old CPU’s (central processing units or chips) of old crappy computers? Didyou also know that many people don’t know about this or even care? This opens a big opportunity for canny goldinvestors to acquire a raw source of industrial gold at a fraction of the value of the gold contained in these CPU’s.These CPU’s can be found in dumped computers on the side of the road, at the local tip and are often given awayfor free at garage sales. The CPU’s can be divided into three classes:

VERY HIGH YEILD CPU’S – Have quarter of a gram or more per piece.HIGH YEILD CPU’S – Have from 1/20th of a gram up to quarter of a gramLOW YEILD CPU’S – Have under 1/20th of a gram

Below I will give you a list of some of the CPU types and yields that are available, and put an approximate value onthem using today’s Australian dollar gold spot price: ($1440 per ounce - $46.30 per Gram)

VERY HIGH YEILD CPU’S:

NEC (server chip) - 0.27g - $12.50 per CPU

Toshiba (server chip) - 0.27g - $12.50 per CPU

ozcopperAdministrator

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Gold CPU Recycling Yields And Values. (Page 1) ... http://forums.silverstackers.com/topic-1853-gol...

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AMD K5 – 0.50g - $23.15 per CPU

Pentium Pro (the holy grail of yields) 1.0g - $46.30 per CPU

Cyrix 586 – 0.25g - $11.58 per CPU

IBM 686 PR200 - 0.25g - $11.58 per CPU

Original Intel Pentium 60Mhz - 90Mhz 0.48g - $22.22 per CPU


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HIGH YEILD CPU’S

Cyrix 486 - 0.11g - $5.09 per CPU

IBM 586 - 0.1g - $4.63 per CPU

Texas Instruments 486 - 0.1g - $4.63 per CPU

Intel 486SX - 0.1g - $4.63 per CPU

i486 TX 486DLC - 0.12g - $5.55 per CPU

AMD (early green) - 0.11g - $5.09 per CPU

Cyrix 686 - 0.21g - $9.72 per CPU

Cyrix MII - 0.18g - $8.33 per CPU


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Winchip - 0.17g - $7.87 per CPU

Intel 486 DX4 - 0.19g - $8.80 per CPU

Intel 486 + DX2 - 0.20g - $9.26 per CPU


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Intel I960 - 0.16g - $7.40 per CPU

AMD 486 – 0.12g - $5.55 per CPU

AMD (brown) - 0.08g $3.70 per CPU

AMD K6 – 0.11g - $5.09 per CPU


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Intel Pentium & MMX (ceramic) 0.12g - $5.55 per CPU

Intel Pentium MMX (ceramic) 0.12g - $5.55 per CPU


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LOW YEILD CPU’S

Intel Pentium 1 MMX black fibre

Celeron - black fibre

Celeron - green fibre

Celeron - slot one

Pentium 2 - slot one

Pentium 3 - slot one


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Pentium 3 - all types

Pentium 4 - all types

Intel Core – all types

Intel Core 2 Duo – all types

Intel i3, i5, i7 – all types

WARNING: Recycling can be very dangerous if you are not experienced. The chemicals used to extract the gold canbe fatal if misused or inhaled.

Last edited by ozcopper (2010-06-19 13:27:07)

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2010-06-19 12:53:18

Fascinating info there. Have you tried reclaiming it yet or are you just stacking the processors at this stage?

Unless made within the Gold Stackers subforum, my posts on Silver Stackers are either personal opinion or acting inthe capacity of site administrator.

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8 di 14 20/03/2012 11:59

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2010-06-19 13:26:10

No, I generally just stack them, I have sold the chips on ebay in the past for up to 50 cents on the dollar ofrecoverable gold. I picked up over half an ounce worth (of pure gold content) worth of chips yesterday.

26_100_4318.jpg



2010-06-19 13:46:19

I shall certainly keep my eyes out for them.

I have a couple sitting around.

How much gold is in a motorola 680000 from the original Amiga?

C.K.

Metal or Nothing ...... Fiats belong in garages, not money paper clips.

2010-06-19 13:58:47

Not sure on the motorola's. I have a 6803030 here myself. They are quiet small, but like most ceramic chips, theyare higher yielding.


2010-06-19 14:21:07

OMG I completly forgot about cpu gold content. I read up on this years ago and forgot it somewhere along the line!If you search youtube you can find videos on how to retreive the gold from them.

Beware of he who would deny you access to information, for in his heart he dreams himself your master.

2010-06-19 14:48:30

I was also looking at PC parts and chips especially however it was too difficult to get to the pins that are plated Ithought that was all that was there. To me it looks like there are other parts within the chip that hold Gold. I willlook further into what I have. Certainly do not have the qty you have there but it gives me an idea...

As for getting the gold off pins and other things it does look very dangerous and you really need the right stuff to doit. If someone knows an easy way certainly keen to hear.

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9 di 14 20/03/2012 11:59

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2010-06-19 14:55:11

Yes Austacker, the centers of many of the chips contain pure gold. They have really caught onto this in U.S.A:http://cgi.ebay.com.au/486-scrap-ceramic-cpu-gold-recovery-pentium-9-23-lbs-/250648698790?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item3a5bd39fa6

This means there is an opportunity in this relatively untapped market here for us Aussies

By the way, RAM also contains about 1 gram of gold per kilo... this is much higher than the 1 gram per ton it talesto get gold out of many major mines.



2010-06-19 15:12:22

I like that picture of cpu in a box, who's going to register www.cpustacker.com

Disclosure: I work for the Perth Mint. What I say is done in a personal capacity and is not endorsed by the Mint.

2010-06-19 18:25:57

Thank you for that post Ozcopper

"It never gets easier for me it just gets faster" - Lance Armstrong

2010-06-19 21:25:28

yeah yeah yeah Oz I have the hydrocloric do you have the nitric 70 and the sodium metabisulfate ?Pm me when you do buddy

Its not the mountains ahead that wear us out but rather the grain of sand thats stuck in our shoe

2010-06-19 21:41:24

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10 di 14 20/03/2012 11:59

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yeah yeah yeah Oz I have the hydrocloric do you have the nitric 70 and the sodium metabisulfate ? Pm me when you do buddy

Not likely that sounds dangerous


2010-06-19 21:58:49

Are you blessed buggars shooting up smack ! or what ?? . Come on peeps try not to labour my patience . ok ok I apologise . im listening there is alot on google/ tube about this . From absolution it is a wonderous thing to see the particulates fall from a clear solution of moonshine to colour eh and slosh itinto a fallen mud mix and then centrifuge it out by hand or was that the other way around ? hehe


2010-06-19 22:03:41

Those figures seem a bit high.

EG. pentium pro seems abit high. Your figure say 1g per cpu, I have investigated and it's only arounf .33 of a gram

Overdraft, so your in the know of recovery? good on ya!!!

I have the SMB, HCL, peroxide, clorox, borax, cuppel , the fingers, the cpus, the cell all ready to go!! HAHAHHA

IRJB - FyourcouchN

2010-06-19 22:20:12

Ozzy here is the deal you get the nitric 70 % and I will get the hydrocloric then the aqua regia is on the house !. The sodiummetabisulfate to precipitate it from solution its a joint venture ????? Im just joking buddy but wow love your language OZ


2010-06-19 22:24:58

lolz Numi the borax in the bottom of the crucible fixed it , your on the money


2010-06-19 22:40:40

Recovery of PM's from electronics? - Here is the solution (pardon the pun)

http://shorinternational.com/goldrecovery.htm

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Ozcopper, here is a paragraph from the site that may apply to you:

"Cut off those portions of the board that have gold. Discard the rest. Chips, which have gold inside as well asoutside, must be broken open. On a small scale, one tap with a hammer should suffice. With lots of chips, youmight want to use a cement mixer."

Last edited by Jonesy (2010-06-19 22:42:51)

2010-06-19 22:41:41

numismatation wrote:

EG. pentium pro seems abit high. Your figure say 1g per cpu, I have investigated and it's only arounf .33 of agram

I stand by the 1g.. its the holy grail of CPU's.. well reported on many refining sites...


2010-06-19 22:44:59

Hey, this one looks cool, put broken up chips into the solution and use a battery to deposit the metal on anelectrode...

http://shorinternational.com/goldrecoveryinstr.htm

Last edited by Jonesy (2010-06-19 22:45:38)

2010-06-19 22:54:21

Im a sit and listening shall we talk about carbon nanotubes or Gold rust AUO imploded pure au thereto au crystals .. must be a mark up there somewhere ? hehe . Put the booze away Raymond


2010-06-20 00:00:59

overdraft3 wrote:

Im a sit and listening shall we talk about carbon nanotubes or Gold rust AUO imploded pureau thereto au crystals .. must be a mark up there somewhere ? hehe . Put the booze away Raymond

Hmmm posting under the influence....


2010-06-20 15:35:48

ozcopper wrote:


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EG. pentium pro seems abit high. Your figure say 1g per cpu, I have investigated and it's only arounf.33 of a gram

I stand by the 1g.. its the holy grail of CPU's.. well reported on many refining sites...

I would love for it to have 1 gram

Others have done tests and don't get nowhere near this.

So not sure who is right. any links for your info?

you looking to purchase some? I have a few.

Last edited by numismatation (2010-06-20 15:36:40)

IRJB - FyourcouchN

2010-06-20 15:41:20


you looking to purchase some? I have a few.

I may be interested. How much would you like for them?


2010-06-20 17:21:59

Thanks for this thread ,Ozcopper.It has got me thinking,of course.

In your opinion ,are there any other parts of a PC worth keeping for their metals?I have been reading a bit and seethat hard drives and edge connectors could be worth saving.

The whole cost/ benefit ratio thing could be going haywire if gold breaks up rapidly.I have no interest in, orknowledge of, how to extract PMs from these components ,but would be interested in selling to you. I have a friendwho is throwing out PCs and laptops on a weekly basis ..he will gladly give me all he has.

Basil! Basil!Anything I can get for you dear? A tracheotomy ,perhaps?Que?(Fourty Trawlers)

2010-06-20 17:24:10

An answer from I guy I know involved with a small refiner in Sydney about how to pre-process cpus before givingthem to a refiner:

The pre-processing for this kind of stuff, as far as I'm familiar with it, is never easy. Basically, the CPUs have verysimilar characteristics to refractory ores. I don't know whether they also contain plastics, but that would add morework to it.

Basically, the first step (assuming no plastics) would be to pulverise what is possible of the refractory materials.That would be done with a ball mill, the aim being to get things down to as fine a powder as possible with somemetal in it. Separation from the balls in the mill would either be by sieve or magnet.

If it contains plastics, the plastics should be burned off at very high temperature to destroy any noxious by-productsof burning) probably both before and after pulverisation to be sure. I believe that kind of burning is done insoutheast Asia.

After obtaining a very fine refractive powder & having burned off any plastics, there's a few ways to proceed. Ibelieve (from what I hear) the simplest method of extraction from a pulverised refractory ore is by cyanide leaching.Only problem is it's very toxic! Having said that, many mining companies have facilities to do it. After cyanideleaching, you'd reduce & precipitate the metal from the solution & melt it to form a metal button, then recycle ordispose of the solution thoughtfully. From that point it's very easy to refine.

Another way to extract from a refractory ore would be to add a lot of say copper & borax &/or other flux (eg.litharge) then melt while stirring. The desired metals from the refractory ore would dissolve into the molten copperwhile the refractories and flux would float on top. Once it cools, you just knock off the borax/refractory slag & are

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left with a (mostly copper) metal button that can then be easily refined.

Anyway, they're two ways I can think of off the top of my head, but I think the first (beside its toxicity problem) ismost efficient.

Last edited by bron suchecki (2010-06-20 17:24:46)

Disclosure: I work for the Perth Mint. What I say is done in a personal capacity and is not endorsed by the Mint.

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