Kaby Lake i7 7700k with Hyper 212 Evo - fluctuating temps

[jochs20]

[strike]I recently bought a i7 7700k with an ASUS Z170-A motherboard. According to HWMonitor, my clock speeds are going all over the place but not going past 4.5 ghz, and this is right out of the box. I have not opted to overclock as of yet. I have no idea if it's related or a separate problem, but I noticed my cpu fan speed will start to speed up for a few seconds, going from 600 RPM to over 1000, but then casually go back down. My vcore voltage ranges anywhere from 0.600 to 1.260, however in bios it reads it at around 1.200 and does not drop. The temperature stays at around 30C . I honestly have no idea what's going on here. BIOS is up to date. [/strike]

EDIT as of 3/7/2017:

The main problem now is the temps. If I'm doing something such as just browsing the web, the core temps will jump from about 28-30c all the way to anywhere between 40-55c and the fan will speed up, and the temps immediately go back down, all of this within 2-3 seconds, and usually repeats within the next 30 seconds. The behavior does not occur during idle. I'm running an i7 7700k with a Hyper 212 Evo heatsink and fan, and my motherboard is an ASUS Z170-A. My OS is Windows 10 64 bit.

 

[helpstar]

Adjust the fan curve at which temperature the fan will speed up in bios. Read the manual how to . Have a look at some YouTube videos

 

[k1114]

Can you hear the fan getting louder or are you just seeing the rpm go up? And I don't mean to stick your head next to it, I mean just a normal position.

 

[jochs20]

Can you hear the fan getting louder or are you just seeing the rpm go up? And I don't mean to stick your head next to it, I mean just a normal position.

Yes, I can hear the fan speed up for a moment then slow down, and at the same time taskmgr is showing the cpu usage being at 15-20 percent by Firefox then falling back down.Regardless, I was able to play a newer game + stream it online in 1080p 60fps with the temps going no higher than 55c. So at this point I feel like it's something to do with Windows causing the cpu usage to jump + the hyper 212 evo under performing at a lower rpm. I've adjusted the fan curve a little further and the fan noise isn't as consistent.

 

[k1114]

I'm seeing similar usage and temps when browsing but I'm on an i5 and chrome. My mobo just isn't as fast reacting so rpm doesn't jump.

 

[Eric_179]

I had this same issue on my Z270E. Go into the BIOS and in Advanced Mode go to your monitor/fan page. I was able to set the ramp time on mine so that frequent spikes/drops in temperature wouldn't cause my fans to ramp up/down unnecessarily. I used a delay time of about 20 seconds. That way, if the heat is constant, the fans will rightfully kick in and cool as needed. There is also a ramp down time as well.

Unfortunately, the newest class of Intel's processors have a refresh time greater than 1 second for reporting temps and voltages. It isn't too bad when you really want to see what's going on instantaneously, but it can mess with fan speeds. Hope this can help!

PS: Just to clarify, I'm not talking about fan curves or quiet profiles or throttle cycles. Theres specifically a fan "delay time" option you can set. Well, my Z270E has it for sure anyway. Good luck!