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x86.fr: The Odd Story of Factory-Downgraded 486s

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xsecret



Joined: 01 Feb 2004
Posts: 1846
Location: France
PostPosted: Thu Jul 30, 2020 10:21 am    Post subject: x86.fr: The Odd Story of Factory-Downgraded 486s Reply with quote
I've just published a story about two nice 486s that were actually factory-downgraded (with a genuine marking that doesn't match the real spec).

Quite interesting Smile

https://x86.fr/the-odd-story-of-factory-downgraded-486s/


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CPUShack



Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
PostPosted: Thu Jul 30, 2020 11:54 am    Post subject: Reply with quote
The Intel is so very bizarre and cool
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xsecret



Joined: 01 Feb 2004
Posts: 1846
Location: France
PostPosted: Thu Jul 30, 2020 4:47 pm    Post subject: Reply with quote
Yep. The SK080 is really a strange part.
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H3nrik V!



Joined: 15 Apr 2014
Posts: 1246
Location: Denmark
PostPosted: Fri Jul 31, 2020 5:52 am    Post subject: Reply with quote
Great article! And interesting stuff . I luckily have an SK080 - but thinking of it - why even make a 3.3V DX2? Smile

Is there a missing link in the following from the article:

Quote:

After I published *this analysis* some weeks ago
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rjluna2



Joined: 27 Oct 2014
Posts: 1302
Location: Hiram, GA, USA
PostPosted: Fri Jul 31, 2020 7:13 am    Post subject: Reply with quote
Apparently, it didn't passed Intel's qualification testing phase after it has been assembled and forgot to microcoded as this Confused
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