CPU TMPIN2 overheating?

[lffoar]

Hi all,
Got an overheating problem so over to the gurus here.
I was trying to convert a movie from MKV to AVI using Freemake video converter when an alarm sounded from the tower. I closed the program, installed HWMON, started conversion again and checked temps.
The TMPIN2 sensor went to 80 degrees and the alarm sounded again so closed down. I thought maybe thermal paste but I've never seated or re-seated a CPU so went to Dr Google. Read up a bit and pulled out the CPU and heatsink, cleaned both with isopropyl alcohol and used the 2 line method to re-seat it. Ran it for a couple of hours and all seemed OK so tried another movie conversion.......Grrrrr, watched HWMON temps raise slowly until the alarm went off again. This time it did last a bit longer before sounding. Temp graph attached.
System specs
Motherboard:
Gigabyte: Model H97-D3H Intel H97 S1150
CPU: Intel Haswell. Core i7-4790 3.6 GHz 8mb LGA 1150
GPU: Gainward Nvidia GTX760 2Gb PCI-E VGA
RAM: G.Skill Sniper 16Gb (8gbx2) DDR3 1600
SSD: Samsung 840 PRO series. 256Gb SATA 3
HDD: Western Digital 3.5” Black 1Tb SATA 3 7200rpm
PSU: Antec HCG-620w High Current Gamer
Case: Thermaltake A41 USB3 Mid Tower

 

[Johan45]

What CPU cooler are you using ? Stock ?
My first guess, since I don't know for sure what that sensor reading is would be package temp or VRM temp. One thing that would help is first if you use a good aftermarket cooler. Put active cooling such as a fan pointed right at the Heatsink for VRM ( yellow ones) and make sure you have good airflow through the case.

 

[Kenrou]

TMPIN2 in Gigabyte boards is the Northbridge if memory serves.

 

[inVain]

I think the TMPIN2 is the CPU socket's temps.
The min-max temps variations are quite near to the i7 4790 reported value.

I wouldn't surprise for the temps if you're using the stock CPU cooler.
But of course, as Johan 45 said; what CPU cooler are you using?

the fans 2-4 are quite slow, though the rest of the system temps look quite OK

 

[lffoar]

Thanks fellers for your input. I bit the bullet and bought an after market cooler. Only a cheapie but it's done the job. Installed it and CPU temps are now around 50-60 degrees under heavy load
Consider it closed.