Has anyone ever seen this before?

[Burgerbob]

Brand new factory sealed cpu from bestbuy, has a finger print? And it’s not like, a smudge it doesn’t come off it’s like burned in almost? Found it to be super odd and I wouldn’t think anyone would be handling CPUs with bare hands at the fab. Any ideas?

[filpo]

Someone's getting fired

[bezza...]

that is very odd does the cpu work fine??

[bezza...]

Just now, filpo said:

Someone's getting fired

where do u think it happened has to be in product testing to verify that the chip works right???

[OhYou_]

US Customs agent accidently fat fingered it while putting it in the machine to install the spying software into the IME. 

happens 

[Agall]

10 minutes ago, Burgerbob said:

Brand new factory sealed cpu from bestbuy, has a finger print? And it’s not like, a smudge it doesn’t come off it’s like burned in almost? Found it to be super odd and I wouldn’t think anyone would be handling CPUs with bare hands at the fab. Any ideas?

I've seen this in other parts of electronics after opening them, but never like this. Good assurance for QC, knowing a human actually touched it in my opinion.

[filpo]

2 minutes ago, Tomberry said:

where do u think it happened has to be in product testing to verify that the chip works right???

ye probs, or somone did it on the ihs's in the fab 

 

[LapsedMemory]

The good news is that it probably didn't happen in the chip fab/assembly.  If it's not a smudge and can't be removed, then it's most likely a fingerprint that wasn't cleaned off before the coating phase of the manufacturing process for the heat spreader, well before it made it's way to the actual die.  Finger oils will cause discoloration in coating process as it reacts to the electrolysis in a different way than bare metal.  

 

So this finger print was already on the heat spreader before it ever got to the final assembly.  QC is supposed to remove these visual defects, but apparently, they missed this.  

 

I cannot say for absolute certain, but as far as I am aware, it shouldn't adversely affect your performance.  

[thrasher_565]

well they left there mark... thats for shur

[Neroon]

So make a fake fingerprints with this one, that you can put on your fingers. Do some break ins, leaving that print everywhere. Wait and see who gets caught. Visit them in jail and ask them what happened with your CPU.

[vf1000ride]

Have never seen it on a cpu but I found fingerprints inside my old Atari 2600.  Parents got it new in the early 80's and it had never been apart until I did to try and fix it back up.

[Burgerbob]

7 hours ago, Tomberry said:

where do u think it happened has to be in product testing to verify that the chip works right???

Maybe but based on the fab video everyone seems to be wearing gloves all the time. And yes the cpu runs totally fine benchmarks are in line with what they should be and it’s totally stable.