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xsecret
Joined: 01 Feb 2004
Posts: 1846
Location: France
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 Posted: Tue May 28, 2019 5:42 am Post subject: [Need help] CPU identification by backside capacitors layout |
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When I'm looking for nice chips on scrap lots (or to identify blank chips), I often need a list of capacitors/resistors layout on the back of CPU.
I've started to build a public list for 478/775/771 CPUs. I scanned every different cap layout in my ES collection, but I probably still miss some of them.
So I need your help : If you find a different layout in your collection, can you please post here the S/Q-Spec and, if possible, a 600/800 dpi scan ?
Here is the link : https://x86.fr/cpu-by-capacitors/
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wren4777
Joined: 13 Dec 2016
Posts: 571
Location: Litija, Slovenia
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| Posted: Tue May 28, 2019 6:26 am Post subject: |
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I have Dempsey B0 and C1, but no scanner. I can take some pictures, if that would work?
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lazyfortress
Joined: 16 Sep 2018
Posts: 279
Location: Maryland, USA
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| Posted: Tue May 28, 2019 6:33 am Post subject: |
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I have an Intel Jayhawk that I can take a photo of after I get home from school. I’m pretty sure it isn’t a thermal test vehicle, as I remember my Jayhawk’s capacitors looking differently than the TTV you posted.
LGA771, sSpec is QBGC. A sSpec of a Jayhawk that also exists is QBGD.
My printer’s scanner sucks, but I have a good macro lens. Would that work?
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xsecret
Joined: 01 Feb 2004
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crazybubba64
Joined: 03 Jul 2018
Posts: 1371
Location: WI, USA
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| Posted: Tue May 28, 2019 8:08 am Post subject: |
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I'll dig through my scrap chips tonight and see if there's anything you are missing. Might have a missing cap or two and bent pins though.
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wren4777
Joined: 13 Dec 2016
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Location: Litija, Slovenia
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| Posted: Tue May 28, 2019 8:18 am Post subject: |
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My Dempsey B0 is different to B1 and C1.
From left to right: QMOL (C1), QHZB (B1), QFCI (B0).
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xsecret
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wren4777
Joined: 13 Dec 2016
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Location: Litija, Slovenia
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| Posted: Tue May 28, 2019 8:30 am Post subject: |
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| xsecret wrote: | | Very interesting. Can you scan the B0-step at 800 dpi ? (or 600 dpi) ? |
I don't have a scanner with me, but I'll ask the photography teacher at school tomorrow if they can help me
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lazyfortress
Joined: 16 Sep 2018
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Location: Maryland, USA
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| Posted: Tue May 28, 2019 10:12 am Post subject: |
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Jayhawk is a bit different than Wolfdale-DP.
Also found a Tejas photo (LGA775).
Images are attached.
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xsecret
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Vegeta
Joined: 13 Apr 2013
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Vegeta
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Vegeta
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lazyfortress
Joined: 16 Sep 2018
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Location: Maryland, USA
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| Posted: Tue May 28, 2019 1:28 pm Post subject: |
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You sure Tejas never tapped out? I found a different photo of the backside.
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crazybubba64
Joined: 03 Jul 2018
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Location: WI, USA
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| Posted: Tue May 28, 2019 8:13 pm Post subject: |
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Here's Yorkfield-XE E0 (QJEE)
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