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This forum is part of our mission to promote the preservation of vintage computers through education and outreach. (In real life we also run events and have a museum.) We encourage you to join us, participate, share your knowledge, and enjoy.

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Conduct yourself as you would at any other place where people come together in person to discuss their hobby. If you wouldn't say something to somebody in person, then you probably should not be writing it here.

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Rule 4: "PM Sent!" messages (or, how to use the Private Message system)

This forum has a private message feature that we want people to use for messages that are not of general interest to other members.

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Why do we have this policy? Sending a "PM Sent!" type message basically wastes everybody else's time by making them having to scroll past a post in a thread that looks to be updated, when the update is not meaningful. And the person you are sending the PM to will be notified by the forum software that they have a message waiting for them. Look up at the top near the right edge where it says 'Notifications' ... if you have a PM waiting, it will tell you there.

Rule 5: Copyright and other legal issues

We are here to discuss vintage computing, so discussing software, books, and other intellectual property that is on-topic is fine. We don't want people using these forums to discuss or enable copyright violations or other things that are against the law; whether you agree with the law or not is irrelevant. Do not use our resources for something that is legally or morally questionable.

Our discussions here generally fall under "fair use." Telling people how to pirate a software title is an example of something that is not allowable here.


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If you are unsure you may consider sending a private message to a moderator instead.


New user moderation

New users are directly moderated so that we can weed spammers out early. This means that for your first 10 posts you will have some delay before they are seen. We understand this can be disruptive to the flow of conversation and we try to keep up with our new user moderation duties to avoid undue inconvenience. Please do not make duplicate posts, extra posts to bump your post count, or ask the moderators to expedite this process; 10 moderated posts will go by quickly.

New users also have a smaller personal message inbox limit and are rate limited when sending PMs to other users.


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Who has OCD?

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    Who has OCD?

    last month, during my eBay browsing I found 2 auctions for "scrap" processors from the 486 to p3 range. no pictures, and in the complete wrong category. I won both auctions for a total of $150 among friends. The FINALLY arrived today. Apparently USPS felt the need to re-box the item en-route.

    Imagine if you will, because my camera's batteries are dead, *rim-shot* about 160 processors slapped into a box and rough handled from some town in Canada to Denver. EVERY single processor has most of their pins bent. Not just 1 or 2 pins, but 80-90% of the pins.

    Oh yea, i got my tiny pliers and tweezers out and I'm going ape on this pile of processors. And for what you might be asking? Well there are about 5 chips that I want to keep, provided they work. To which I present to you, my little pride and joy:



    What you see here is not an optical illusion. The case actually opens up for easy CPU access. Seriously. When I got this thing from a random thrift store I was so happy! I forget what it had originally, but I put in my favorite super 7 motherboard, the Asus P5A. But I didn't stop there! I got some switches from eBay and a bunch of "solenoid extension cables" from eBay as well. These served me well as they had standard .1" spacing on the connectors which fit perfectly on motherboard jumper locations. The other ends I soldered to switches. I placed the switches on the front for easy access. So the top controls the voltage, the middle the multiplier and the bottom row the fsb. I took one of my k6 166's and had that little baby screaming near 350mhz. Which was too much as I ended up letting the magic smoke out of the chip but its okay. I have LOTS more to play with now.

    Now I don't have a nice setup for the slot 1's or the s370's. I hope in the next few days to score an asus p3b-f.

    For those people that have CPU collections, I have already taken the time to give a rough cleaning to the chips for sake of cataloging. if something strikes your fancy, let me know. I know of 2 overdrive chips, and I think I have a fabled revision A Celeron.

    have a look here:
    https://spreadsheets.google.com/ccc?...thkey=CMjL5OwJ

    the ones marked in red I want to keep for myself, at least until I fully benchmark them. provided they work.

    I have an ultimate goal in mind. I don't want to spoil it now, but if you ever wondered if an Amd 233 was faster than the Intel 233... I hope to find out.
    It is a mistake to think you can solve any major problems just with potatoes.

    #2
    A trick I used to use for straightening bent CPU pins - get a draftsman's mechanical pencil that uses 0.5 lead. You want a drafting pencil because it has a metal tip. Remove the lead from the pencil, and use the metal tip to straighten CPU pins - just put it on the bent pin and push it straight.

    I've salvaged several CPU's this way.

    -Ian

    Comment


      #3
      Recyclers tend to throw (and I mean throw) CPU's into large plastic bins, so those CPU's might have had the pins bent before they were shipped.

      So you paid about $1 a chip then shipped ?
      What I collect: 68K/Early PPC Mac, DOS/Win 3.1 era machines, Amiga/ST, C64/128
      Nubus/ISA/VLB/MCA/EISA cards of all types
      Boxed apps and games for the above systems
      Analog video capture cards/software and complete systems

      Comment


        #4
        about yes. And that was CHEAP. Gold recyclers LOVE the old ceramic chips and I'd say I have about 10 pounds of chips. Last time I sold old chips I got almost $500 for 10 pounds. So yea. either way, its all good.
        It is a mistake to think you can solve any major problems just with potatoes.

        Comment


          #5
          http://www.scribd.com/doc/28911037/G...t-in-CPU-Chips

          Basically all the cool 486 and early Pentium chips have all the gold and they are being recycled like crazy so they will be hard to find soon. Once you get into the P2/P3 socket 1 and Athlons you have no gold worth bothering with.
          What I collect: 68K/Early PPC Mac, DOS/Win 3.1 era machines, Amiga/ST, C64/128
          Nubus/ISA/VLB/MCA/EISA cards of all types
          Boxed apps and games for the above systems
          Analog video capture cards/software and complete systems

          Comment


            #6
            SL32B 333MHz SEPP Celeron is a 333A.
            Only 266 & 300 was made in non A versions

            FYI.. Gold scrappers are going stupid at the moment and have pushed prices of Pentium Pros to $30each (including shipping to US address)
            There are 10 types of people in this world:
            those who understand binary and those who don't. ~Author Unknown

            Comment


              #7
              Originally posted by luckybob View Post
              Oh yea, i got my tiny pliers and tweezers out and I'm going ape on this pile of processors. And for what you might be asking? Well there are about 5 chips that I want to keep, provided they work.
              Mechanical pencils are (by far) the best tool for straightening the processor pins on older processors.

              Comment


                #8
                Originally posted by luckybob View Post
                last month, during my eBay browsing I found 2 auctions for "scrap" processors from the 486 to p3 range. no pictures, and in the complete wrong category. I won both auctions for a total of $150 among friends. The FINALLY arrived today. Apparently USPS felt the need to re-box the item en-route.

                Imagine if you will, because my camera's batteries are dead, *rim-shot* about 160 processors slapped into a box and rough handled from some town in Canada to Denver. EVERY single processor has most of their pins bent. Not just 1 or 2 pins, but 80-90% of the pins.

                Oh yea, i got my tiny pliers and tweezers out and I'm going ape on this pile of processors. And for what you might be asking? Well there are about 5 chips that I want to keep, provided they work. To which I present to you, my little pride and joy:



                What you see here is not an optical illusion. The case actually opens up for easy CPU access. Seriously. When I got this thing from a random thrift store I was so happy! I forget what it had originally, but I put in my favorite super 7 motherboard, the Asus P5A. But I didn't stop there! I got some switches from eBay and a bunch of "solenoid extension cables" from eBay as well. These served me well as they had standard .1" spacing on the connectors which fit perfectly on motherboard jumper locations. The other ends I soldered to switches. I placed the switches on the front for easy access. So the top controls the voltage, the middle the multiplier and the bottom row the fsb. I took one of my k6 166's and had that little baby screaming near 350mhz. Which was too much as I ended up letting the magic smoke out of the chip but its okay. I have LOTS more to play with now.

                Now I don't have a nice setup for the slot 1's or the s370's. I hope in the next few days to score an asus p3b-f.

                For those people that have CPU collections, I have already taken the time to give a rough cleaning to the chips for sake of cataloging. if something strikes your fancy, let me know. I know of 2 overdrive chips, and I think I have a fabled revision A Celeron.

                have a look here:
                https://spreadsheets.google.com/ccc?...thkey=CMjL5OwJ

                the ones marked in red I want to keep for myself, at least until I fully benchmark them. provided they work.

                I have an ultimate goal in mind. I don't want to spoil it now, but if you ever wondered if an Amd 233 was faster than the Intel 233... I hope to find out.
                hey, i see an Asus P5A-B there..... i have one of those, GREAT socket 7 board!! love it. sucks about the bent pins. gotta love the postal service, no? or maybe they were bent from the beginning. ouch.
                sigpic

                Comment


                  #9
                  out of 12 attempts I have successfully got working 11 chips. This is taking a LOT longer than I thought it would.

                  Strange thing. in the P5A-B you see I have a k6-2/450 that I am testing. Its weird, but I'm getting benchmarks that are about 30% LOW. Also, cpu-id crashes when it tries to detect the chip as does most super-pi benchmarks. For example, if you look at the benchmarks on this page: http://vogons.zetafleet.com/viewtopic.php?t=26175%29 One would expect a score in the neighborhood of 400-500. but I barely crack 300. I hope its not the board, that would really suck.
                  It is a mistake to think you can solve any major problems just with potatoes.

                  Comment


                    #10
                    Perhaps the CPUs might have gotten slightly damaged.

                    Comment


                      #11
                      And its not like a k6-2/450 is rare or worth a lot. I'm just going to toss it in the bin and move on. On a side note, if there are any processors that anyone wants, let me know. I know I have 2 overdrives and prob ably a few f/div bug processors in the list. just let me know and i'll either test them for you or send them to you as-is. just send me a pm!
                      It is a mistake to think you can solve any major problems just with potatoes.

                      Comment


                        #12
                        The rare K6's are the III's and any boards that will run them with 1-2MB of L3 cache.
                        What I collect: 68K/Early PPC Mac, DOS/Win 3.1 era machines, Amiga/ST, C64/128
                        Nubus/ISA/VLB/MCA/EISA cards of all types
                        Boxed apps and games for the above systems
                        Analog video capture cards/software and complete systems

                        Comment

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