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William Blair
Joined: 06 Nov 2005
Posts: 68
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 Posted: Thu Dec 08, 2005 1:26 am Post subject: Let's create a list of CPUs we don't want ground into dust |
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Seriously. I'd like to get some input here or be pointed to some list that may already exist somewhere on the Web that lists the CPUs/MPUs/ROMs/EPROMs/etc. that could be considered relatively rare (however you want to interpret THAT). I'd like to email major gold reclaimers on eBay a list of rarer ICs so that they might search their stock to rescue them. I've gotten email from several (and even a phone call from one) of them indicating that they'd be interested in receiving such a list. I'm pretty new to the CPU collection scene, so I'd appreciate any input you might have. The chip you save may (one day) be your own.
Here's a list I've already come up with (suggested additions given thru Thu Dec 08, 2005 7:55 am already included). Please comment to suggest changes and additions:
Text to look for on chips: "Confidential," "Engineering Sample," "Mechanical Sample," "Thermal Sample," "Sample," "Prototype"
Chips to look for:
AMD AM186 (PGA packages especially)
AMD AM188 (PGA packages especially)
AMD AM286 (PGA packages especially)
AMD (and others) 2901 (40-pin DIP)
AMD AM29000
AMD AM29030
AMD AM29116
AMD AM29117
AMD K6-III 500AFX
AMD 5x86 P75+ & 150MHz
AT&T (and Lucent) 32100
AT&T (and Lucent) 32106
AT&T (and Lucent) 32200
AT&T (and Lucent) 32206
Chips Super 386
Cyrix III (or C3)
Cyrix CX486DRx2
Cyrix EMC87 / AutoMath
Cyrix MII (433 or 466Mhz only)
DEC 21064
Fairchild (and others) 3850 (40-pin DIP)
Hewlett Packard or "HP" (all)
IBM (most any CPU they made or marked as IBM)
IDT Winchip (any model)
Intel (and others) 3002 (28-pin DIP)
Intel (and others) 4004 (16-pin DIP)
Intel (and others) 4040 (24-pin DIP)
Intel (and others) 8008 (18-pin DIP)
Intel (and others) 8080 (40-pin DIP)
Intel (and others) 8085 (40-pin DIP)
Intel (and others) 8086 (40-pin DIP)
Intel (and others) 8088 (40-pin DIP)
Intel 80186 (PGA packages only)
Intel 80188 (PGA packages only)
Intel 80286 (PGA packages only)
Intel A80486SX-16
Intel i860
Intel (and others) Math Coprocessors (normally anything with "87" somewhere in the number, usually at the end)
Intel (and others; all 16-pin DIPs) RAM 1101 , 1103 , 3101
Intel (and others; all 16-pin DIPs) ROM 3301 , 3601
Intel (and others; all 24-pin DIPs) ROM 1301 , 1302 , 1601 , 1602
Intel (and others; all 24-pin DIPs) EPROM 1701 , 1702 , 3702
Intel Pentium (50, 60 or 66MHz only)
Intel chips with a MQ, MG, or MD prefix
Intersil (and Harris) 6100 (40-pin DIP)
It's ST486
MIPS (by NEC, IDT, Toshiba & others) R3000 , R4600 , R5000 , R10000
MOS 6502 (40-pin DIP)
Mostek MK3880 (40-pin DIP)
Motorola (and others) 68000 (48-pin DIP)
Motorola (and others) 68008 (48-pin DIP)
Motorola 68010
Motorola 68012
Motorola 68060
Motorola 68881
Motorola 68882
Motorola 88000
Motorola 88100
National 32008 (48-pin DIP)
National 32016 (48-pin DIP)
National INS8060 (40-pin DIP)
National SC/MP (40-pin DIP)
NEC V20 (40-pin DIP)
NEC V30 (40-pin DIP)
NEC V40 (40-pin DIP)
NEC V50 (40-pin DIP)
NexGen (all)
RCA (also made by Hughes, SSS & others) 1802 (40-pin DIP)
Rise MP6
Signetics 8X300 (50-pin DIP)
Signetics (and others) 2650 (40-pin DIP)
Sparc & UltraSparc
ST 6x86
TI TMS1000 (28-pin DIP)
TI TMS1100 (28-pin DIP)
TI TMS1300 (40-pin DIP)
TI TMS9900 (also made by ITT, 64-pin DIP)
TI TMS2600 ROM (24-pin DIP)
UMC Green CPU
Via Cyrix III (or C3)
Weitek (all)
Zilog (and others) Z80 (40-pin DIP)
Last edited by William Blair on Fri Dec 09, 2005 12:30 pm; edited 4 times in total |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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William Blair
Joined: 06 Nov 2005
Posts: 68
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| Posted: Thu Dec 08, 2005 1:54 am Post subject: |
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Part of this series? (data from CPU-World.com):
AT&T 32100 32-bit microprocessor
AT&T 32106 Floating Point Unit
AT&T 32200 32-bit microprocessor
AT&T 32206 Floating Point Unit |
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William Blair
Joined: 06 Nov 2005
Posts: 68
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| Posted: Thu Dec 08, 2005 1:56 am Post subject: |
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| I forgot to add that I plan to put a notice for them to look for chips with "Confidential," "Engineering Sample," or "ES" (less reliable) on them. Any other text to look for? |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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| Posted: Thu Dec 08, 2005 3:12 am Post subject: |
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'Mechanical sample'
'thermal sample'
Cyrix MII 433 or 466
Pentium 50 (very very rare)
Intel A80486SX-16
Intel chips with a MQ MG or MD prefix
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Cpuswe
Joined: 15 Mar 2005
Posts: 2214
Location: Karlskrona, Sweden
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| Posted: Thu Dec 08, 2005 3:20 am Post subject: |
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It is a good initiative!
But...
Could there be a another effect with a list like this? If goldminers and other non cpucollectors get a list like this the prices might change from gold value to collector value, i.e the prices will rise...
But that might be better than the chips being melted down...
Just some loud thinking.
/T
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My collection: http://www.cpucollection.se :::::: http://www.chipdb.org Photos of chips you never knew existed. Now over 6000 different chips in the database. |
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fRaSsL
Joined: 31 Mar 2003
Posts: 1570
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| Posted: Thu Dec 08, 2005 4:41 am Post subject: |
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| Cpuswe wrote: | It is a good initiative!
Could there be a another effect with a list like this? If goldminers and other non cpucollectors get a list like this the prices might change from gold value to collector value, i.e the prices will rise...
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No, the prices will drop. So I can imagine that there are some collectors, who do not think it is a good idea to rise the amount of available "rare" CPU, they paid much money for  
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Cpuswe
Joined: 15 Mar 2005
Posts: 2214
Location: Karlskrona, Sweden
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| Posted: Thu Dec 08, 2005 7:09 am Post subject: |
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Yes, thats true.
I was thinking in the terms that doing unique findings in cheap goldscrap will be less possible when the seller has a list and can "pick the raisins out of the cake". (Dont know if that "raisin expression" is used in english but i think you get it. Picking out the best parts...)
The rarest and cheapest "finds" i have done is when the seller is unaware of the value.
I have not done much goldscrap buying yet so i dont know how much "findings" you can do in a pound or two, but i see collectors buying so it must be something in it.
William: In my opininon the Non-goldcap P60 is rarer than with goldcap.
/T
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My collection: http://www.cpucollection.se :::::: http://www.chipdb.org Photos of chips you never knew existed. Now over 6000 different chips in the database. |
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wepwawet
Joined: 18 Mar 2004
Posts: 3019
Location: Seligenstadt - Germany
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| Posted: Thu Dec 08, 2005 7:29 am Post subject: |
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Zilog Z80
MOS 6502
Signetics 2650
Signetics Nx300
TMS 1000, 1100, ...
AMD 2901
Intersil 6100
+all their clones
I am wondering when more collectors find an interest in non-Intel-first CPUs. There are a lot of very nice chips out there.
And sometimes a clone is much more pretty than the original, eg. the SGS Z80 in "zebra" package which I rate higher than the purple original (I think the white "original" was made by Mostek).
But still now it seems that the major interest is in all those varieties of Pentiums.
And searching gold scrap boxes is really fun - keep everything odd, a collection of bizarre chips is also worth a peek! |
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x86sniper
Joined: 19 Mar 2004
Posts: 179
Location: Hong Kong
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| Posted: Thu Dec 08, 2005 8:55 am Post subject: |
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AMD K6-III 500AFX (they DOES exist)
AMD 5x86 P75+ 150MHz
Cyrix CX486DRx2 any speed
Cyrix EMC87 / AutoMath
Cyrix Joshua
NexGen Nx586FP / Nx686 / Nx587 / Nx386 / NxVL, best if the original mainboard can be found
Weitek 3167 / 4167
anything with sample / ES / QS or prototype marking
If for collectable "Scrap" mainboards...
AMD Fester (any revision)
AMD Solo (I think Genna just bought one  )
VIA / SiS Demo board
Intel board with "Intel Secret" chipset or Engineering name instead of model (i.e Bayfield instead of D865GBF)
Personally I think it is a good start but...
1. The scrapper would pick the gold out of their mud and raise the price, evinta1980 is a good example...search for Nx587 and you will know why
2. The condition of those chips are not garanteed, you will never know the chip is really the exact one or not, or worse, due to mishandling in computer scrapping process, the chip might get scratch, pins may be broken etc.
3. What can we do if scrappers pick all "ES" marked non ES chips out but sold as real ES, faking chip collectors? |
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Mixeur
Joined: 06 Jan 2005
Posts: 4038
Location: Sochaux, France
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| Posted: Thu Dec 08, 2005 12:39 pm Post subject: Re: Let's create a list of CPUs we don't want ground into du |
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| William Blair wrote: | | Seriously. I'd like to get some input here or be pointed to some list that may already exist somewhere on the Web that lists the CPUs/MPUs/ROMs/EPROMs/etc. that could be considered relatively rare (however you want to interpret THAT). |
Well, I've done such work for my website.
I think I will post a link to it soon here, even if it is not 100% OK and tested... |
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William Blair
Joined: 06 Nov 2005
Posts: 68
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| Posted: Thu Dec 08, 2005 12:41 pm Post subject: |
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| CPUShack wrote: | 'Mechanical sample'
'thermal sample'
Cyrix MII 433 or 466
Pentium 50 (very very rare)
Intel A80486SX-16
Intel chips with a MQ MG or MD prefix |
Oops, I remember reading about those two, now. And, thanks, I'll add those chips, too. |
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William Blair
Joined: 06 Nov 2005
Posts: 68
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| Posted: Thu Dec 08, 2005 1:35 pm Post subject: |
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| Cpuswe wrote: | It is a good initiative!
But...
Could there be a another effect with a list like this? If goldminers and other non cpucollectors get a list like this the prices might change from gold value to collector value, i.e the prices will rise...
But that might be better than the chips being melted down...
Just some loud thinking.
/T |
I've bought a few very small (<15) eBay CPU lots being sold for gold reclamation and received a high percentage of not-very-common CPUs in one nice batch. However, the one-time or occasional small-lot _sellers_ getting rid of their computer shop or home upgrade CPU left-overs aren't the ones we'd target, just the ones consistently _buying_ the huge lots. I don't think most of us bid on those huge lots anyway (usually too much duplication) especially now that the gold lot prices on eBay are rising so fast due to rising gold prices and the resulting increase in the popularity of gold reclamation (my reason for bringing this list topic here).
Based upon some of the comments I've read here about spoiling our market, I've edited my original list to remove rarity ratings. We'll let the market decide their value rather than give anyone preconceived notions. I'll only add asterisks next to the CPUs to _really_ look out for when I insert everyone's suggestions for additions to the list. The only reason I'd do this would be to make certain that the truly rare CPUs aren't missed simply because our list is so long that it provides too much to look for in a huge lot of CPUs.
On the possible effect of raising prices by providing a list, I've noticed some fairly insane prices being paid on eBay for individual CPUs lately. Maybe it has always been that way. I'm fairly new and wouldn't know. Anyway, I'd think that the presence of _more_ collectable CPUs on eBay should tend to bring prices _down_.
Secondly, I'm getting an impression from most of these bulk CPU gold reclaimers that they are mainly eBay _buyers_ and aren't interested in taking the time to sell individual CPUs in individual eBay auctions (the majority of the few I've emailed haven't even responded to my offer of a CPU list). So, I plan to mention in the CPU list we provide to them (IF we decide here to provide them with anything at all) that it is primarily the well-photographed and documented eBay ads that get the high prices for CPUs and, as a result, if they want to get rid of multiple CPUs in short order and with minimum hassle that they should offer them in the CPU collector site "for sale" forums first. I'd then provide them with links to the various forums. |
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William Blair
Joined: 06 Nov 2005
Posts: 68
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| Posted: Thu Dec 08, 2005 1:42 pm Post subject: |
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| fRaSsL wrote: | | Cpuswe wrote: | It is a good initiative!
Could there be a another effect with a list like this? If goldminers and other non cpucollectors get a list like this the prices might change from gold value to collector value, i.e the prices will rise...
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No, the prices will drop. So I can imagine that there are some collectors, who do not think it is a good idea to rise the amount of available "rare" CPU, they paid much money for |
Good point although I don't think we're going to suddenly see a flood of rare chips from this since the vast majority of what's being recycled is really common stuff from Dells, Gateways, Compaqs and other mass-market PCs. That makes sense, otherwise the rare chips wouldn't be so "rare." |
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William Blair
Joined: 06 Nov 2005
Posts: 68
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| Posted: Thu Dec 08, 2005 1:47 pm Post subject: |
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| Cpuswe wrote: | Yes, thats true.
I was thinking in the terms that doing unique findings in cheap goldscrap will be less possible when the seller has a list and can "pick the raisins out of the cake". (Dont know if that "raisin expression" is used in english but i think you get it. Picking out the best parts...)
The rarest and cheapest "finds" i have done is when the seller is unaware of the value.
I have not done much goldscrap buying yet so i dont know how much "findings" you can do in a pound or two, but i see collectors buying so it must be something in it.
William: In my opininon the Non-goldcap P60 is rarer than with goldcap.
/T |
The list would be provided only to the very large CPU lot buyers who buy the sort of lots that I don't think most of us bid on. The small-lot _sellers_ where we find what you're talking about wouldn't be given the list. |
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