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Article: The Gold We All Search For.

| General Electronics Recycling
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    Dunemaul started this thread.
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    Article: The Gold We All Search For.

    Components from older computer chips, transistors, and electronics of the 1960's and 70's contain the most gold content. Their general purpose was for military and aerospace applications. Due to demanding conditions the components were required to use heavier gold plated caps (lids) and leads/pins/connectors. By using heavier amounts of precious metals the components could have and increased longevity and corrosion resistance.

    During the 1990's the best candidates for gold recovery, are the early versions of the Intel Pentium Processor, Intel Pentium Pro Processor, And many DEC Alpha (and similar RISC CPU's). Reason being that these chips had large gold plated caps, pins, and internal solid gold wiring.Very fine solid gold wiring, that typically was 99.9% pure gold, was used in wire bonding the computer chip (die) to the substrate package. Other components such as the cap, lids, pins, and pads are only gold plated. Something to be careful of is some manufacturers have also used aluminum wiring in the past in place of solid gold wiring to lower costs.

    The top dog for gold content during the 1990's hands down was the Pentium Pro. It has a large surface area of gold plated pins and cap. Under the cap you will find two separate chips, this doubles the amount of gold present compared to a single CPU.

    After 1998 we start to see a sharp decline in gold content of Cpu's. Reasons behind this was manufactures no longer used solid gold wire bonding technology or gold plated pins in their packaging. A good example is, the Intel Pentium 4 Microprocessor, which came in an organic package material with a metal lid and no gold wire. The only gold able to be extracted was from the pins. "The pins were gold plated with a thickness of only 0.76 microns, that calculates to only 0.000176 cc of gold per cpu".

    What we can expect from the future is already here and shows the dying age of gold recovery from cpu's. Today's processors have no connector pins, instead using a thinly gold plated connection pad to socket the Cpu to the motherboard.



    In the next article I will discuss processors that are worth more then their weight in gold and where some might be found. Happy treasure hunting.

    -Dunemaul
    Last edited by Dunemaul; 07-16-2012 at 05:11 AM.
    Born to think, destine to succeed.



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    and now I know a little more. Thanks Dunemaul.

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    Thanks...Almost like a reliable WIKI page

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    Dunemaul started this thread.
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    Quote Originally Posted by grabinow View Post
    Thanks...Almost like a reliable WIKI page

    I need to practice for when i head back to college, so i figure I'd share small parts of the data that i have collected over the year. Only thing i can't say is true about the article is the section in quotes, and the big boys aint gonna say if the number is right or wrong.

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    can you link the orginal source?

    http://reclaimtech.com/
    We pay you to recycle!

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    Dunemaul started this thread.
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    Good stuff Dunemaul! Thanks for the work and welcome back!

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    Thanks Dune...read the rest of article and learned something new today....thanks again.
    I won't be wronged. I won't be insulted. I won't be laid a-hand on. I don't do these things to other people, and I require the same from them.” John Wayne-- The Shootist

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    Dunemaul started this thread.
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    Yeah im working on using part of the 2nd section of the article and incorporating items that i have found through research that contain the rare chips. I'll probably post it sometime around 5am ish.

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    Is this the thread that you told me that you were in the process of writing a while back? When I was talking to you about the boards that I was working with - you may not remember...

  14. #11
    Dunemaul started this thread.
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    Yes it is Julie currently im half finished with the rest of the article and ill finish it when i get the chance. Just been to busy later.

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    I want to know where to find an Intel 4004.

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    Jaydee i saw an IC chip on fleebay going for CRAZY $$$$. Like, $5000+. Was insane. I want to find THAT one!

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    Good article, Dune. I don't know how the late future of E-Scrap is going to look. 10+ years from now, what will i be paying for computers? .50c? Who knows.

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    Dunemaul started this thread.
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    The article contains were to find that exact chip. I been looking for the item they are found in and still no luck.

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    Fair enough. I know what i'll be reading tonight. Thank you.

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    Old calculators and test equipment are likely candidates Quote4004.com:
    To be fair, during the 1970-1971 period of Intel's 4004 development, Texas Instruments (TI) was also working on 4-bit CPU-on-a-chip technology for use in their line of calculator products. Regardless of who might have achieved "first silicon," there was a key difference between Intel's and TI's efforts. Although TI was developing a chip that contained all the elements of a microprocessor, it was designed to perform only one purpose, to be the "brain" of a calculator. Intel was also developing the 4004 for calculator applications, but their CPU-on-a-chip architecture could be programmed to control a wide variety of electronic devices from traffic signals to test equipment, according to the instructions stored in the external ROM. After the 4004's debut, Intel actively developed the nascent microprocessor market with their line of design tools like the Intellec 4, whereas TI focused on the "calculator on a chip" market for five years before finally releasing their TMS1000 family of 4-bit "microcontrollers" in 1976, which integrated the CPU, program ROM, data RAM, and I/O logic into a single chip. By then Intel had already introduced their famous 8-bit 8080, but there was plenty of market opportunities for TI's far less expensive, 4-bit "computer on a chip." Not long after, Intel introduced their own microcontroller family, the most famous being the 8-bit 8051, possible the most "cloned" microcontroller of all time and still in active use today.

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    ^You made it too easy


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