DOA Intel Processors?

[Hadowken]

Hello! I've read that it is very rare to have a DOA processor. My question is how to check if it's working out of the box.

Do you just place it on a compatible motherboard and when it goes to the bios, it should show at the top left part? Is that a solid indication that the procie is 100% working? If not, what more tests should I do? Thanks in advance!

 

[Karsten75]

never install and run the processor without cooling. It will be damaged in a matter of seconds - long before you get to the BIOS.

The first test for a working processor is indeed if it can activate the BIOS.

After successful installation of the operating system, you can also run the Intel Processor Diagnostic tool.

I will tell you that, to the best of my knowledge, all Intel and AMD processors are put through a diagnostic validation before being shipped. It is extremely rare to find a genuine Intel/AMD processor that is DOA out of the box.

I'd say in 90_% of DOA cases, it is user error in installing the processor - take great care with that.

 

[GhislainG]

Your statement "It will be damaged in a matter of seconds - long before you get to the BIOS. " is incorrect. If it was true, then whenever a cooler is dislodged during shipping of a PC would end up with a fried CPU. Besides I've powered on a system by mistake before installing the cooler and it posted fine.

 

[Karsten75]

Your statement "It will be damaged in a matter of seconds - long before you get to the BIOS. " is incorrect. If it was true, then whenever a cooler is dislodged during shipping of a PC would end up with a fried CPU. Besides I've powered on a system by mistake before installing the cooler and it posted fine.

Oh good. Glad to know. I asked about that and got no definitive answers or results in searching. It seems that the conclusion is that it *must* run with a cooler. I myself long ago suffered damage to a processor due to lack of a heatsink.

I have been asking here on these forums if modern processor with thermal protection would be OK, but have had no definitive answers.

Maybe you can point me to an authoritative source that defines the parameters for running a processor without a heatsink?

I fully realize this link is not authoritative and represents "Internet knowledge": http://www.overclock.net/t/946197/how-long-can-i-safely-relatively-run-my-cpu-without-a-heatsink-cooler

 

[GhislainG]

You may not want to try it with your AMD CPU, but it shouldn't fail. Worst that should happen is a shutdown. A long time ago I had to replace a failed CPU because the owner didn't install the cooler properly and it didn't make full contact with the CPU, but that was an old AMD CPU that had no thermal protection. About the link that you provided, it took me several seconds before I noticed the cooler wasn't installed, but I doubt it would stay powered on for 5 minutes without at least a heatsink. Most people who replied didn't even test it; they simply assumed they knew.

 

[Sergeant_Sneaky]

Oh good. Glad to know. I asked about that and got no definitive answers or results in searching. It seems that the conclusion is that it *must* run with a cooler. I myself long ago suffered damage to a processor due to lack of a heatsink.

It's not "okay" to run without a cooler, don't do it even to test the CPU, but if it comes loose and you don't notice before powering on, it will shut down before any damage is done, but it's definitely not recommended. It will reach 100c+ in a matter of seconds and throttle/shut down.

 

[Hadowken]

Thank you Karsten!
I have another question though, according to below link, LGA-1150 based processors have their FPO(batch no.) and ATPO numbers on the 5th and 6th line respectively.
http://www.intel.com/content/www/us/en/support/processors/000005609.html

I've read that the FPO number is not unique. Sorry if this question is stupid for you but... Can there be more than 1 processors with the same FPO numbers?

From my understanding... The serial number is the only unique digits of the processor. So it's a must that the last 4 digits of the serial number indicated on the box is the same as the one on the lower right side of the PCB of the processor.

Please correct me if i'm wrong.

Other links read:
http://www.fmad.io/blog-anatomy-intel-cpu-scam.html

 

[Karsten75]

As I understand it, the Intel FPO number is similar to a batch number. So multiple processors can have the same FPO number. Feel free to GOogle. THere are plenty of authoritative answers on the Intel forums.