My new i7 6700k 4.0 ghz processor is overheating

[shamemaker]

I am not the most experienced person when it comes to working and building computers but I just recently took the initiative to update my outdated gaming computer. Everything has gone smooth except in bios my CPU idles at 100c and after I start windows it sits around 90c and can fluctuate up and down, mainly down but is still not stranger to spiking back up to 90c. I couldn't leave it up and running for long for fear that I may fry the damned thing. In bios my cpu fan was clocked at ~2k RPM.

My new computer is as follows: Windows 10.
intel core i7-6700k skylake quad core 4.0ghz processor
EVGA GeForce GTX 1070 grfx card
1 TB Hard drive
2x8 GB PNY Anarchy Ram sticks totaling 16GB
MSI Z170-A PRO LGA 1151 Intel Z170 SATA 6Gb/s USB 3.1 ATX Intel Motherboard

Those are all of my new parts to my semi-old computer.
I also have a 500GB hard drive and a 750k PSU

My new processor did not come with a new CPU fan. However, I was replacing an i5 processor and just decided to use my old fan. Upon looking it up on google these fans are labeled as i3, i5, and i7. So I figured it would be the same either way. I did not apply any cooling paste and did not on my i5 either and never had any issues with it.

Anybody have any idea why my cpu would be burning up like this? I test started a couple of games and although it read 90c before launching any games it did not spike any higher than that. and when I have nothing else running it can sometimes drop down to 60c but will also spike back up to ~80c spontaneously.

Any insight would be much appreciated. I have a friend who helped me rebuild this computer and he knows a lot more than me but he is also puzzled on the matter. Thanks in advanced

 

[Nerdy Nerd]

Ok, what was the i5? If the i5 you had was not a K version, it came with a stock fan and you would have used that. So your new one is a K version, so what I think it happening is your using a stock fan on a over clockable version. You can't do that. You will need another cooler if your using stock. That is one theory. The second theory is you have to much thermal past or to little. I would clean off the thermal past from both fan and processor and then re-apply it. Third theory is that the fan may be damaged in some way or it is off. I hope this helps.

 

[shamemaker]

Ok, what was the i5? If the i5 you had was not a K version, it came with a stock fan and you would have used that. So your new one is a K version, so what I think it happening is your using a stock fan on a over clockable version. You can't do that. You will need another cooler if your using stock. That is one theory. The second theory is you have to much thermal past or to little. I would clean off the thermal past from both fan and processor and then re-apply it. Third theory is that the fan may be damaged in some way or it is off. I hope this helps.

Thanks for the input. Your first theory sounds the most likely situation. I honestly do not know what my old i5 was in that regard. I used zero cooling paste. And the fan is installed correctly. So if it's just not the right fan for the job then that'd make sense to me. I'll be ordering a new one regardless since they're relatively cheap. Can you point me in the direction of a fan that's most compatible with my new processor?

 

[Nerdy Nerd]

You need thermal paste dude, without that, you can kiss it good bye, lol. Anyways, there are a lot of coolers, you could go water cooled but I think your just looking at air cooled. Here is one for an i7 K version.

http://www.newegg.com/Product/Product.aspx?Item=9SIA4UF2DZ6565&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-PCPartPicker,%20LLC-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=

 

[MeanMachine41]

There is no need to repeat your thread and Nerdy Nerd has missed the fact that you applied no thermal paste. This is BAD practice.

 

[Nerdy Nerd]

Ya, I guess I read to quickly. My bad. However, I did state he needed some in my second comment. Just let me know if that fan is to big or not. I can see about other options as there are many options.

 

[shamemaker]

yeah sorry for the second thread. I just tried to "edit" or "update" my original post because I had some typos. I have been dealing with this all day and can't even really type straight right now. Definitely did not mean to post two threads, however that managed to happen. If I could delete it I would. Thanks for the help. When I built my old comp first time around I had someone tell me thermal paste wasn't really necessary back then. It seems like an entirely different case now. Definitely getting a little bit better, newer fan and some thermal paste. Thanks again guys.

 

[MeanMachine41]

Ya, I guess I read to quickly. My bad. However, I did state he needed some in my second comment. Just let me know if that fan is to big or not. I can see about other options as there are many options.

No Nerdy Nerd it was easy to miss and the bad practice is the OPs.

 

[Nerdy Nerd]

Yep no problem, and for the future for who ever told you not to apply paste, don't ever listen to them again, just look it up or ask on here if there isn't a thread on that issue already.