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frag_
Joined: 17 Nov 2008
Posts: 4015
Location: Estonia
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 Posted: Mon Dec 23, 2013 11:39 am Post subject: |
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Nice!
So instead of four cache dies as on the datasheet pic
it has only two, but probably with doubled size. |
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Marcin
Joined: 02 Jan 2005
Posts: 8519
Location: Poland
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| Posted: Mon Dec 23, 2013 12:44 pm Post subject: |
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That is so nice and I will keep one opened and one intact. Thanks for sharing !
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aberco
Joined: 05 Sep 2013
Posts: 2655
Location: Paris France
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| Posted: Mon Dec 23, 2013 1:00 pm Post subject: |
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Fairly easy to open, lock the metal cap in a lathe (not the ceramic substrate) and use a metal saw to cut all 4 corners. Aluminum is not hard, so a long hand saw is perfect for the job, it will also ensure that you will cut in the heatspreader at the same level.
The right spot for this chip is around 7mm from the border.
When deep enough you will see an opening. Repeat on 3 edges, the last may not need to be cut. Pry it open with a flat blade screwdriver and voila! |
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aberco
Joined: 05 Sep 2013
Posts: 2655
Location: Paris France
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| Posted: Mon Dec 23, 2013 1:18 pm Post subject: |
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| The datasheet is preliminary, so maybe they changed the cache design and die layout for production... or there's a later revision of the MCM which we have obtained. |
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karman
Joined: 10 Aug 2017
Posts: 294
Location: Spain
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| Posted: Sat Aug 10, 2019 4:48 pm Post subject: |
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Got a couple of these Jewels so I tried and succeed with the screw method at the third attempt.
First attempt: weak screw, broke in half.
Second attempt: failed with the diameter of the hole, too big.
Third attempt: got a really thought screw.
Really nice MCM once is open.
Also, updated PDF URL (original link seems broken): ftp://ftp.software.ibm.com/rs6000/PPC_support/misc/odyssey_planar.pdf |
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debs3759
Joined: 18 Jan 2006
Posts: 9477
Location: Northampton, Divided Kingdom
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| Posted: Sat Aug 10, 2019 5:43 pm Post subject: |
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Ouch! To me, drilling through a factory original, attached heatspreader (which I consider part of the package and part of the value) is sacrilege! I am sure there are less damaging ways to remove the heat spreader (in fact, I am sure there have been a few posts describing methods).
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pixelmanca
Joined: 03 Oct 2018
Posts: 316
Location: USA
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| Posted: Sun Aug 11, 2019 12:59 am Post subject: |
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I've successfully, easily and quickly opened up 5 of these myself, using the screw method and no debs3759, there is absolutely NO way to remove the covers without damaging them, trust me I've tried and neither heat nor pressure works to get them to come off...
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Last edited by pixelmanca on Sun Aug 11, 2019 12:44 pm; edited 1 time in total |
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karman
Joined: 10 Aug 2017
Posts: 294
Location: Spain
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| Posted: Sun Aug 11, 2019 5:57 am Post subject: |
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By the way, we have seen this MCM a lot in trading and collective but I’m unable to find where was used this processor.
Does some knows where was used? |
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apa4
Joined: 27 Aug 2015
Posts: 394
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| Posted: Sun Aug 11, 2019 7:29 am Post subject: |
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The screw method didn't actually work for me... Cutting it is more precice
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