Intel 486 - ES = Engineering Sample? - solved

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Gerwin



Joined: 10 Aug 2012
Posts: 63

PostPosted: Tue Mar 21, 2017 2:11 pm    Post subject: Intel 486 - ES = Engineering Sample? - solved Reply with quote

Some of the 486 chips have the type of marking shown in the picture below.
What does 'GS' Mean? I see some which instead of 'GS' say 'ES', would that mean Engineering Sample? Some similar CPUs have the Letters 'CJ', 'CK', 'FD' or 'E1' etc.

EDIT: here is one with ES like I described: http://www.engineering-sample.com/gallery/Intel/040%2080486/486dx266es/

Picture from here: http://www.cpu-world.com/sspec/SX/SX911.html


Last edited by Gerwin on Tue Mar 21, 2017 2:47 pm; edited 1 time in total
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CPUShack



Joined: 16 Jun 2003
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PostPosted: Tue Mar 21, 2017 2:22 pm    Post subject: Reply with quote

Nope, these are just die lot codes, nothing special
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Gerwin



Joined: 10 Aug 2012
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PostPosted: Tue Mar 21, 2017 2:37 pm    Post subject: Reply with quote

Okay, thank you.
Though it is coincidential the the lot code for the one at http://www.engineering-sample.com is also 'ES'...

I am wondering about these two (attached). They have some bent pins. I don't know about the markings on the front.
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debs3759



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PostPosted: Tue Mar 21, 2017 2:41 pm    Post subject: Reply with quote

You can only tell from the codes on the front of the chip. Intel production chips will have a 5 character code starting S (an S-Spec), ES chips will have a 5 character code starting Q.
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Gerwin



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PostPosted: Tue Mar 21, 2017 2:47 pm    Post subject: Reply with quote

Allright, you convinced me. If the seller cannot tell me anything about the front (heatsink blocking it?), then I will just leave it.

Thanks a lot for the quick reply!
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CPUShack



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PostPosted: Tue Mar 21, 2017 3:04 pm    Post subject: Reply with quote

and the dates on those chips are rather late for an actual ES
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Gerwin



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PostPosted: Tue Mar 21, 2017 3:29 pm    Post subject: Reply with quote

The X86-secret ES I linked to is from w24 1994, actually.

I received a photo from the front now, it was an ordinary SX807.
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