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bccwchan
Joined: 20 Sep 2004
Posts: 2585
Location: Hong Kong
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 Posted: Mon May 13, 2013 8:48 pm Post subject: Two interesting Pentium cpu |
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I bought this two ES(?) last month.
Just wondering what the purpose of the Classic Pentiurm for? Seem that there is not the cpu die but the L2 cache. |
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Neon_WA
Joined: 08 Nov 2008
Posts: 7146
Location: Margaret River, West Australia
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| Posted: Tue May 14, 2013 7:39 pm Post subject: |
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nice grab Billy 
the Pro is a 256k version probably produced around week 49 - 51 1995
Q0868 or Q0874 the likely qSpecs it would of been if had been marked
The cache chip in socket 5 package is a strange one.. but it is 256k at least.
Intel did use this package for later cache controllers, but I haven't seen cache in this package
Not sure if they were trying to produce an additional cache chip for the Pro or produce a chip
to replace the 10 x 82492/82493 chips used in Pentium server systems for the 256k cache
or just use this package to test different cache dies
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bccwchan
Joined: 20 Sep 2004
Posts: 2585
Location: Hong Kong
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| Posted: Tue May 14, 2013 8:24 pm Post subject: |
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| Neon_WA wrote: | nice grab Billy
the Pro is a 256k version probably produced around week 49 - 51 1995
Q0868 or Q0874 the likely qSpecs it would of been if had been marked
The cache chip in socket 5 package is a strange one.. but it is 256k at least.
Intel did use this package for later cache controllers, but I haven't seen cache in this package
Not sure if they were trying to produce an additional cache chip for the Pro or produce a chip
to replace the 10 x 82492/82493 chips used in Pentium server systems for the 256k cache
or just use this package to test different cache dies |
My first ES bought from scrap lot, nice experience (esp. recent ES price is quite high).
For the PPro, its die is bigger than normal and has the same size with Pentium 60/66, (left is Pentium 60, right is the PPRO).
For the Classic Pentium, to my surprise, Pentium 60/66 bottom plate fits the size. |
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bccwchan
Joined: 20 Sep 2004
Posts: 2585
Location: Hong Kong
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| Posted: Tue May 14, 2013 8:37 pm Post subject: |
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| Neon_WA wrote: |
Not sure if they were trying to produce an additional cache chip for the Pro or produce a chip
to replace the 10 x 82492/82493 chips used in Pentium server systems for the 256k cache
or just use this package to test different cache dies |
Is it possible the testing chip for 82498?
It has the same size and pinout. |
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Neon_WA
Joined: 08 Nov 2008
Posts: 7146
Location: Margaret River, West Australia
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| Posted: Wed May 15, 2013 6:14 pm Post subject: |
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| bccwchan wrote: | Is it possible the testing chip for 82498?
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82497 is same package as well.. but I think both were in production before this cache chip came along
_________________
There are 10 types of people in this world:
those who understand binary and those who don't. ~Author Unknown
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bccwchan
Joined: 20 Sep 2004
Posts: 2585
Location: Hong Kong
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| Posted: Wed May 15, 2013 8:08 pm Post subject: |
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| Neon_WA wrote: | | bccwchan wrote: | Is it possible the testing chip for 82498?
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82497 is same package as well.. but I think both were in production before this cache chip came along |
Thanks for your comment. I will try to find one spare 82497/82498 to open the bottom plate to compare the cache size. |
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Neon_WA
Joined: 08 Nov 2008
Posts: 7146
Location: Margaret River, West Australia
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| Posted: Wed May 15, 2013 8:39 pm Post subject: |
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82497/82498 are Cache controllers.. not Cache
82493 cache was only 128k.. not sure if Intel put into production a 256k chip
_________________
There are 10 types of people in this world:
those who understand binary and those who don't. ~Author Unknown
http://www.x86-guide.net/Neon-WA/en/collection.html |
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bccwchan
Joined: 20 Sep 2004
Posts: 2585
Location: Hong Kong
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| Posted: Wed May 15, 2013 9:03 pm Post subject: |
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| Neon_WA wrote: | 82497/82498 are Cache controllers.. not Cache
82493 cache was only 128k.. not sure if Intel put into production a 256k chip |
My mistake 
I need to search for a 82493 to find the answer. |
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