CPU strange temperatures

[LucSou]

Hello people, I let my notebook (DELL Inspion 14R 5420) turned on the whole day (and night) and for some hours I used HWinfo for log my CPU Usage and temperatures from the CPU and SSD. Strangely my CPU start to warm up (and my SSD too but is probably because of the CPU) sometimes from nowhere even when I'm not using it in anyway, anyone knows why or if it's normal to happen?

 

In the image attach in the red rectangles is possible to see what I'm talking about, in the green is visible that sometimes it's stable.

 

OS: Windows 8.1 x64

CPU: Intel Core i5-3210M CPU @ 2.50GHz, 2501 Mhz, 2 Cores, 4 Threads (Max Turbo Frequency 3.1 Ghz)

GPU: NVIDIA GeForce GT 630M

SSD: SanDisk SDSSDA120G ATA Device

Motherboard: Dell 0RHTCK

 

Spoiler

Sorry for the bad english. 

 

[Jacktastic-Mofo]

Does your PC have any scheduled tasks? because that may be a cause. The spikes don't look like spikes, they're all uniform and happen in pretty uniform intervals.

[LucSou]

I use EaseUS Todo Backup but it only backup the files at 00:00 every day and normally in that hour I'm using the PC. Nothing more than that.If there was a process happening in that time the CPU Usage would increase too right?

[BelgiumCastGijs]

13 minutes ago, LucSou said:

I use EaseUS Todo Backup but it only backup the files at 00:00 every day and normally in that hour I'm using the PC. Nothing more than that.If there was a process happening in that time the CPU Usage would increase too right?

Does your laptop have a fan that shuts down when temps are safe? It might be becasue the fan shuts of, the temp rises slowly, then the fan turns on and cools it down quickly, and then it repeats this...

[LucSou]

 

Just now, BelgiumCastGijs said:

Does your laptop have a fan that shuts down when temps are safe? It might be becasue the fan shuts of, the temp rises slowly, then the fan turns on and cools it down quickly, and then it repeats this...

I think that might be this. There's a risk of damaging the CPU in a long term cooling and warming up like this for hours? And it's normal for the CPU to get close to 70 ºC in idle without the fan on?

[BelgiumCastGijs]

8 hours ago, LucSou said:

 

I think that might be this. There's a risk of damaging the CPU in a long term cooling and warming up like this for hours? And it's normal for the CPU to get close to 70 ºC in idle without the fan on?

On my personal laptop it goes up to about 65 C and then the cooling turns on again... CPU's are very good with fluctuating temps, this shouldn't affect the lifetime more than a few days a most ;-)

[LucSou]

15 minutes ago, BelgiumCastGijs said:

On my personal laptop it goes up to about 65 C and then the cooling turns on again... CPU's are very good with fluctuating temps, this shouldn't affect the lifetime more than a few days a most ;-)

Okay, thank you for the help!