I have an older Haswell PC in my workshop with a Pentium G3420 CPU in it now. I want to replace it with an i5-4690 I picked up. But the Pentium was only a 53W CPU, so I presume the cooler will be too small for the 84W i5-4690. I do however happen to have another stock cooler almost like it, but with a copper slug in the heat sink. Is there any way to pre-determine if that will be big enough? Or, must I install it and stress test the CPU to find out? In general, is there any way to tell what the TDP capacity of Intel stock coolers are?