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 Post subject: CPU's for grading #1
PostPosted: Wed Dec 11, 2019 5:58 pm 

Joined: Thu Aug 01, 2019 6:55 pm
Posts: 555
What will this CPU go as? I have one with the cap removed?

Thank you!


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 Post subject: Re: CPU's for grading #1
PostPosted: Wed Dec 11, 2019 11:46 pm 
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Joined: Tue Feb 03, 2015 6:57 pm
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With cap green brown fibre with metal
Without the cap green brown fibre without metal

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 Post subject: Re: CPU's for grading #1
PostPosted: Thu Dec 12, 2019 8:47 am 

Joined: Thu Aug 01, 2019 6:55 pm
Posts: 555
Thank you!


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 Post subject: Re: CPU's for grading #1
PostPosted: Fri Dec 20, 2019 3:27 am 

Joined: Fri Dec 20, 2019 3:16 am
Posts: 177
Location: Ohio
Q: most of those caps on CPU are nickel, right?

Besides your gold cap or plated CPU.


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 Post subject: Re: CPU's for grading #1
PostPosted: Fri Dec 20, 2019 8:47 am 

Joined: Thu Aug 01, 2019 6:55 pm
Posts: 555
I believe most are copper.


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 Post subject: Re: CPU's for grading #1
PostPosted: Fri Dec 20, 2019 3:26 pm 
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Most older caps are copper. Newer ones tend to be aluminium.

A few companies use other metals. AMD is known for their tungsten spreaders.

The plating varies. Gold was very common in the 70s because it was so inexpensive then. Tin is very common today as it works well for shielding as well. Today tin on copper, tin on aluminium, and straight aluminium are most common. AMD still uses tungsten alloys. It’s not worth removing caps EXCEPT

4000 and 25x series intel from the early mid 70s. If you can do so without damaging the tiny fragile thin chips; the gold + cpu rates are slightly higher.
Soviet CPUs. The CCCP had massive gold reserves and utilised them. Same issue as early intel.
AMD k6 series runs from 3-5 and k7. Heavy tungsten rather than alloys. Only if you have a buyer.

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 Post subject: Re: CPU's for grading #1
PostPosted: Fri Dec 20, 2019 6:52 pm 

Joined: Fri Dec 20, 2019 3:16 am
Posts: 177
Location: Ohio
Thanks mate.
I read up on it and was j.w if there were complete nickel or tungsten ihs's or shields worth removing for upgrade and what not; or just having that pure nickel/ precious metal block to sell alone.


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