i7-7700K temps spikes right after installing.

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45 sheeps on the road

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Jan 8, 2014
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Hi, I just installed my new i7-7700K and when I booted thi first time I noticed that the temperatures spiked like crazy (suddenly went from 30 degrees celsius to 60, and then back to 30). It has calmed down now, but I just wonder if it's normal.

I'm using a Corsair H60 cooler.
 
Solution
CompuTronix
45 sheeps on the road,

Core temperatures increase and decrease instantly with changes in load.

Intel’s specification for DTS response time is 256 milliseconds, or about 1/4th of a second. Since Windows has dozens of Processes and Services running in the background, it’s normal to see rapid and random Core temperature “spikes” or fluctuations, especially during the first few minutes after startup, which should eventually settle. Any software activity will show some percentage of CPU Utilization in Task Manager, where unnecessary Tray items, Startups, Processes and Services that contribute to excessive or continued spiking can be disabled.

6th Generation processors introduced "Speed Shift" technology in Windows...
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RARRAF

RARRAF

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Jul 22, 2007
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well its a bit of a baby cooler for a top end cpu but saying that 60 is nothing to be worried about and really you need to do a full re-install of your OS to really take advantage of the new CPU I think maybe in the future look to getting a H115 but just keep an eye on the temps they look fine at the moment.
 
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4

45 sheeps on the road

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Thanks for your quick reply! I tested the CPU in PUBG and the temperature never went over 65. I will probably get a new cooler in the future, however I'm not planning to overclock. I simply bought the K version because of the 4,2GHz base clock instead of the 3,6GHz base clock on the non-K version.
 
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geofelt

geofelt

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Oct 9, 2006
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You are ok.
At idle, expect to see 10-15c. over ambient.
The spike is likely due to the high amount of initial activity after booting.
Under normal use, you are ok up to about 75c.
The cpu will throttle or shut down to prevent damage if it senses a dangerous temperature.
That is around 100c.
If you overclock, you can safely stress at about 85s.

FWIW:
As of 6/9/17
What percent can get an overclock at a somewhat sane 1.4v Vcore.

I7-7700K
4.9 83%
5.0 62%
5.1 29%
5.2 6%
 
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CompuTronix

CompuTronix

Intel Master
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Nov 13, 2006
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45 sheeps on the road,

Core temperatures increase and decrease instantly with changes in load.

Intel’s specification for DTS response time is 256 milliseconds, or about 1/4th of a second. Since Windows has dozens of Processes and Services running in the background, it’s normal to see rapid and random Core temperature “spikes” or fluctuations, especially during the first few minutes after startup, which should eventually settle. Any software activity will show some percentage of CPU Utilization in Task Manager, where unnecessary Tray items, Startups, Processes and Services that contribute to excessive or continued spiking can be disabled.

6th Generation processors introduced "Speed Shift" technology in Windows 10, which responds much faster to changes in workload than "SpeedStep" due to having many more Core speed and Core voltage transition levels.

Since 7th and 8th Generation Speed Shift is twice as fast as 6th Generation, some users complain of Core temperature spikes which cause fluctuations in fan RPM at idle. Motherboard manufacturers are currently developing BIOS fixes that include separate SpeedStep and Speed Shift settings with more flexible fan curves and time delay options.

Here's the operating range for Core temperature:

Core temperatures above 85°C aren't recommended.

Core temperatures increase and decrease with Ambient temperature.

Highest Core temperatures occur during stress tests, rendering or transcoding, but are lower during less processor intensive workloads such as applications and gaming. CPU workloads and Core temperatures can vary greatly between games. Idle temperatures below 25°C are generally due to Ambient temperatures below 22°C.

If you'd like to get up to speed on this topic, then read this Sticky: Intel Temperature Guide - http://www.tomshardware.com/forum/id-1800828/intel-temperature-guide.html

CT :sol
 
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Solution
M

mdd1963

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Jan 14, 2006
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When Windows is starting up, lots of processes/tasks are starting/running/completing, causing the CPU to run at up to 4.5 GHz for a minute or so, where the temps will be 60-65C even with a decent cooler; once all the tasks are done, the processor will clock back down to 800-1200 MHz, and temps will settle down to 30-32C.

Nothing to see here, really.
 
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