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johnorun

Joined: 04 Apr 2008 Posts: 3364 Location: Chicago, IL- US
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Posted: Mon Mar 09, 2015 11:10 pm Post subject: 486SX-25 SX719 LOWPOWER Pair- Fake or Real? |
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My new finds---
Notice the differences between these two SX719 LOWPOWER chip tops- different size trademarks and "registered" marks and different sized laser text.
Next look at the bottoms...! I've never seen a 486 with both silver pins and silver bottom plate with no markings.
Fake or very rare specimen? _________________ My collection list (growing) http://johnorun.x86-guide.com/en/collection.html |
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CPUShack

Joined: 16 Jun 2003 Posts: 34259 Location: State of Jefferson, USA
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Posted: Mon Mar 09, 2015 11:12 pm Post subject: |
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both are legit, different marking are from differing plants (malay vs USA)
silver bottom has been chemically stripped of gold by a scrapper _________________ New for 2025! The CPU Shack has a co-processor!
Visit The CPU Shack of microprocessor history and information. |
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vezhlys

Joined: 01 Jun 2008 Posts: 411 Location: Lithuania, Vilnius
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johnorun

Joined: 04 Apr 2008 Posts: 3364 Location: Chicago, IL- US
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Posted: Mon Mar 09, 2015 11:21 pm Post subject: |
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Thanks for the bad news. I would think the process of stripping the Gold plate would leave some damage to the chip?
Also, what are the arrow marks stamped on both bottom plates? _________________ My collection list (growing) http://johnorun.x86-guide.com/en/collection.html |
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CPUShack

Joined: 16 Jun 2003 Posts: 34259 Location: State of Jefferson, USA
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johnorun

Joined: 04 Apr 2008 Posts: 3364 Location: Chicago, IL- US
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Posted: Mon Mar 09, 2015 11:52 pm Post subject: |
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| CPUShack wrote: | | think end user test marks, I know Tim use to use them |
..and these are from Tim! RIP _________________ My collection list (growing) http://johnorun.x86-guide.com/en/collection.html |
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