Author Topic: Cpu damage, it this one a gonner?  (Read 1244 times)

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Offline RefrigeratorTopic starter

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Cpu damage, it this one a gonner?
« on: May 02, 2020, 11:38:25 am »
Bought a used cpu and the seller said it had some minor damage.
Yeah right, looks more like this cpu kissed a wall at mach 3.
Looking at the pinout it looks like the damage is around the bclk area and the missing pin happens to be ground.
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Offline Gyro

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Re: Cpu damage, it this one a gonner?
« Reply #1 on: May 02, 2020, 11:45:30 am »
I think that's a case of a CPU with complete damage - It's a pretty binary thing (no pun intended).

It's not just that pad, it's the de-lamination of the PCB which will probably have broken buried vias and tracks from other pads.

Probably not your wisest purchase.  :-\
Best Regards, Chris
 
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Offline RefrigeratorTopic starter

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Re: Cpu damage, it this one a gonner?
« Reply #2 on: May 02, 2020, 12:10:08 pm »
Holy crap ir bloody works
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Offline Gyro

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Re: Cpu damage, it this one a gonner?
« Reply #3 on: May 02, 2020, 01:32:12 pm »
Holy crap ir bloody works

I think I'd agree with that sentiment!  ;D
Best Regards, Chris
 
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Offline amyk

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Re: Cpu damage, it this one a gonner?
« Reply #4 on: May 03, 2020, 11:18:16 pm »
You're lucky, but in general CPUs have a lot of redundancy in their pinout (mostly power/ground) because they need to handle a lot of current; performance at high load may be slightly compromised by that damage. I recall reading an Intel datasheet for a BGA part that even mentioned x% of balls may fail over time with no functional effect.
 

Online Alex Eisenhut

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Re: Cpu damage, it this one a gonner?
« Reply #5 on: May 04, 2020, 04:19:25 pm »
Wow. Maybe it was only Mach 1.5.
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Offline Jeroen3

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Re: Cpu damage, it this one a gonner?
« Reply #6 on: May 04, 2020, 06:13:42 pm »
What about all the buried layers? Such carrier board is like 16 layers?
 

Offline amyk

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Re: Cpu damage, it this one a gonner?
« Reply #7 on: May 05, 2020, 04:59:26 am »
What about all the buried layers? Such carrier board is like 16 layers?
Copper is mildly flexible.
 


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