I think i got a bad new CPU (i7-5820k) FAILED

PainBlame

Commendable
Nov 19, 2016
17
0
1,510
So about November of 2016 i built a new pc with a Haswell 6 core i7-5820k.

I overclocked it to 4.5ghz and it worked fine till 1 month before my pc refused to work. Windows started to crash a few times.

I bought new components for everything except a new cpu. I tried a new set of RAM, a new PSU, A new graphics card, a new water cooler. Nothing worked. It turns on for 3 seconds, fan spins and lights turn on, But then the it all turns off 4 seconds after. Then it turns it self back on and will do this to the end of time.

I sent in my motherboard to Gigabyte and then sent it back saying the motherboard has no problems.

But before i sent in the motherboard i noticed the CPU makes a quiet high pitch noise, like you can hear the electricity going through it. I don't remember it making this noise when i first built the computer, and i don't hear the same noise with my new i7-7700k CPU

I did at one time think i put too much thermal paste, but then read that it was not conductive, however i just noticed there is a very tiny hole ontop of this CPU its close to the corner and looks like it was machine drilled. I'm starting to think that maybe some thermal paste got inside of it, because i did take a small pin and scrap some off the inside of the rim of the hole.

My voltage was set at 1.25 volts if i remember correctly, which is where most people who overclocked this cpu would be around at.

During stress test i never went over 80C, and it usually idled around 50C and went no more than 60C when i watched youtube and such.

I did update the bios to a "beta" bios because i didn't have a supported RAM. It said the beta bios would improve compatibility. However, GIGABYTE said it worked fine when they tried it. Unless they faked their test run, which i doubt.

The weirdest part is that the computer was working just fine the night before it broke. I shut down the computer before i went to sleep and then the next day it had this problem.

DID I GET A BAD CPU??
I only read one review of this person who claimed they never overclocked the cpu, and it only lasted them 2 years before it failed.

I really don't know what to think or do at this point. Should i contact INTEL? I did read that overclocking the CPU voids the warranty, but at just 4 months of minimal work, this should not have ever happened.
 
Solution
It was worth a look as adaptive will cause voltage spikes, .1v, above what you actually set. Seems like you had a great OCer as well. The newer stepping 5820k CPUs could go higher with less voltage on average. At 1.325v that I use, I can boot at 4.5Ghz, but not stable in stresstests. Also, when you overclocked, did you increase your uncore(L3 Cache) speed? I've read that you want this within 500Mhz of your core speed. I have mine set at 4Ghz, stock is 3Ghz. However, I can't vouch if being outside this range can damage CPU or not. Good chance it was rumor on OC guides at X99 launch.
1.25v should have been safe. I've been running mine at 4.4Ghz 1.325v fixed vcore since buying at launch back in August 2014. Was this a fixed voltage, or adaptive? What were gaming temps like? Don't worry about that tiny hole on top of the heatspreader. Not an issue that I've seen, and I got thermal compound in there as well before. Never noticed the noise you mentioned. CPU failures are rare, but they do happen. It doesn't sound like you caused it though based on your post. With Gigabyte testing the board, and the new parts you tried, it does seem like a CPU issue though. It's worth a shot contacting Intel for an RMA. They could refuse, or you could save lots of $$$ on a replacement.
 


I think i may once messed with the adaptive mode through the "Intel extreme tuning utility" app. Though i just changed it back to normal mode. I watched the voltage and it never changed when it was in adaptive mode. Gigabyte's bios also doesn't even have an adaptive mode for x99 motherboard. I wonder if i forced something on the CPU that the motherboard couldn't do. IDK however even in adaptive the temps stayed the same.
 
It was worth a look as adaptive will cause voltage spikes, .1v, above what you actually set. Seems like you had a great OCer as well. The newer stepping 5820k CPUs could go higher with less voltage on average. At 1.325v that I use, I can boot at 4.5Ghz, but not stable in stresstests. Also, when you overclocked, did you increase your uncore(L3 Cache) speed? I've read that you want this within 500Mhz of your core speed. I have mine set at 4Ghz, stock is 3Ghz. However, I can't vouch if being outside this range can damage CPU or not. Good chance it was rumor on OC guides at X99 launch.
 
Solution