Anybody know value of Prolog 90 chips on? (C4004)

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SrSoftEng



Joined: 08 Aug 2021
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PostPosted: Sun Aug 08, 2021 7:41 pm    Post subject: Anybody know value of Prolog 90 chips on? (C4004) Reply with quote

So I have the chips pulled from a prisitne Prolog 90 suitcase version. I was wondering what you all thought about the best way to pass these along to someone else. Not really my thing anymore. Don't know current value of them given the pandemic, inflation, other economic issues plaguing the world but any help would be appreciated. Yes that is a coveted grey trace in there. Any help is appreciated.
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debs3759



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PostPosted: Sun Aug 08, 2021 8:42 pm    Post subject: Reply with quote

I would have kept it intact (including whatever covered the EPROMS to stop UV killing the data on them) as some collectors would have wanted a working system.
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CPUShack



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PostPosted: Mon Aug 09, 2021 12:49 am    Post subject: Reply with quote

Its a very nice set, and solder free. Quite nice these days.
ebay probably fetch $2k for them

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PostPosted: Mon Aug 09, 2021 7:39 am    Post subject: Reply with quote

Yeah, I can put them back in the system and turn it on. It works no problem.

debs3759 wrote:
I would have kept it intact (including whatever covered the EPROMS to stop UV killing the data on them) as some collectors would have wanted a working system.
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PostPosted: Mon Aug 09, 2021 7:41 am    Post subject: Reply with quote

CPUShack wrote:
Its a very nice set, and solder free. Quite nice these days.
ebay probably fetch $2k for them


What will they be worth in 10 years from? I am weighing them against another investment and I don't see these chips increasing that much. They went from $1k to $2k in the last 7 years which is kind of a weak increase.
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i440bx



Joined: 30 May 2004
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PostPosted: Mon Aug 09, 2021 7:57 am    Post subject: Reply with quote

You pull them from a working system? Instead of try to make the whole system more worthy as a complete System?

Sounds genius

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crazybubba64



Joined: 03 Jul 2018
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PostPosted: Mon Aug 09, 2021 8:05 am    Post subject: Reply with quote

Anonymous wrote:
Yeah, I can put them back in the system and turn it on. It works no problem.

debs3759 wrote:
I would have kept it intact (including whatever covered the EPROMS to stop UV killing the data on them) as some collectors would have wanted a working system.


If you are interested in long-term value, keeping it as a full system is probably your best bet.

C4004s are rare enough as-is. Intact prolog systems with such nice chips are even more so.

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wren4777



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PostPosted: Mon Aug 09, 2021 9:05 am    Post subject: Reply with quote

I agree with Crazybubba and Debs. Even with far more modern systems, motherboards generally carry their value far better than chips alone. That's because chips are (comparitively) easier to store safely compared to boards/systems, while also taking up less space. So whole systems are much rarer and more valuable.
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SrSoftEng



Joined: 08 Aug 2021
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PostPosted: Mon Aug 09, 2021 9:11 pm    Post subject: Reply with quote

Here it is put back in the prolog and operational.
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