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Neon_WA
Joined: 08 Nov 2008
Posts: 7146
Location: Margaret River, West Australia
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 Posted: Wed Mar 27, 2013 12:56 am Post subject: Interesting Pentium |
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Haven't had time to troll ebay much lately.. but did pick up this interesting Pentium 
Apart from the obvious.. see if anyone can pick what makes this special
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Marcin
Joined: 02 Jan 2005
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Location: Poland
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frag_
Joined: 17 Nov 2008
Posts: 4015
Location: Estonia
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| Posted: Wed Mar 27, 2013 3:42 am Post subject: |
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Golden back cap.
They are black on 120 P's. |
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Neon_WA
Joined: 08 Nov 2008
Posts: 7146
Location: Margaret River, West Australia
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| Posted: Wed Mar 27, 2013 5:50 am Post subject: |
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to give you a bit more info.. if it had a FPO on the top it would be C451......
Marcins gold top P120 B5 stepping Q0707 is 9447
Lee's ceramic P120 C2 stepping Q0711 is 9502
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Marcin
Joined: 02 Jan 2005
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Location: Poland
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| Posted: Wed Mar 27, 2013 6:31 am Post subject: |
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My theory : STD associate with standard so it should be preproduction sample. Intel swapped goldcaps to black lid at bottom in '94 - correct me if I'm wrong. This should explain why this sample still have goldcap under.
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Neon_WA
Joined: 08 Nov 2008
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Location: Margaret River, West Australia
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| Posted: Wed Mar 27, 2013 6:54 am Post subject: |
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STD I presume is to do with voltage type.
Voltage Spec... Nominal Tolerance Minimum Maximum
STD (Standard)........... 3.30v ±0.165 3.135v 3.465v
VR (Voltage Reduced). 3.38v ±0.083 3.300v 3.465v
VRE (VR Extended)...... 3.50v ±0.100 3.400v 3.600v
Intel produced 90 & 100MHz C2 stepping ES weeks 50 & 51 1994
At the moment I believe it is an internal Intel sample possibly for thermal testing at 120Mhz
it is at the changeover from integrated heat-spreader with gold die cap to without heat-spreader & black die cap
but the 90 & 100 ES produced the same week have black ceramic die caps
So maybe just pot luck it ended up with a gold die cap.
tags A4347 120Mhz STD
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