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Tegranphos
Joined: 04 Oct 2009
Posts: 806
Location: Navarra - Spain
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 Posted: Wed Feb 29, 2012 12:27 pm Post subject: SL5TK, Remarked or Fake???? |
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| Hello, I recently add to my collection an Intel Pentium 4 1,7 GHz/256/400/1.75V SL5TK and I think that is remarked by solder mask in one capacitor in bottom. Anyone have seen this in an original CPU or definitelly is remarked or fake??? |
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admin
Site Admin
Joined: 31 Dec 1969
Posts: 121
Location: Fairfax, VA USA
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| Posted: Wed Feb 29, 2012 2:07 pm Post subject: |
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They don't look remarked. I think the chips on the bottom are decoupling capacitor arrays, and they are used to keep the noise down. Removing or adding them does not change processor frequency.
Gennadiy |
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gshv
Joined: 01 Feb 2003
Posts: 7898
Location: Fairfax, VA USA
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| Posted: Wed Feb 29, 2012 2:15 pm Post subject: |
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Sorry, forgot to login back into my main account.
Gennadiy |
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Tegranphos
Joined: 04 Oct 2009
Posts: 806
Location: Navarra - Spain
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| Posted: Wed Feb 29, 2012 3:11 pm Post subject: |
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| admin wrote: | They don't look remarked. I think the chips on the bottom are decoupling capacitor arrays, and they are used to keep the noise down. Removing or adding them does not change processor frequency.
Gennadiy |
Yes, i Know this, but I never seen the solder mask without a capacitor in any cpu, and I think that a sSpec always have the same decoupling capacitor, so as the othet with same sSpec, or the cpu is remark in origen or a change lid fake with capacitor remove |
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Neon
Joined: 04 Feb 2008
Posts: 1512
Location: Dallas, Texas, USA
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| Posted: Wed Feb 29, 2012 4:32 pm Post subject: |
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I have seen several SL5TJ SL5UJ and SL5TK that have solder but no capacitor mounted, just like your SL5TK.
At first, I also thought these were fakes, but they identify and work properly. The solder bumps all appear even (nearly identical), so I think they were placed by machine, not hand-soldered. |
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Tegranphos
Joined: 04 Oct 2009
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Location: Navarra - Spain
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