Why do my CPU still hot while I have already applied a Thermal Paste?

Eko Wibowo

Honorable
Mar 15, 2013
6
0
10,510
It start with 40 degree celcius, and in idle state it runs at 65-70 degree. Playing Doom 3 just around 15mins, make the CPU temp goes until 100 celcius. I have already use DeepCool Z3 paste, and have already spread the paste covering until its edges.

It's just a Core i3 4340 with 8GB DDR 3 RAM, no exsternal VGA.

In another system I have already use Maelstorm CPU cooler (single fan) for my Skylake Core i7 6700, and the temp stable at 20 degree celcius. Will using Maelstorm in my Core i3 will be able lowering the temp?