I have the new pentium 4 procesor
The one with very few pins to bend and install incorrectly.
When I built this system I forgot to install the paste between the processor and the heat sink.
It was running at over 90C.
I installed the paste and it dropped the temp to a comfortable 60C even under heavy load it runs at about 70C.
Its factory default shows up at 72C with a CPU fan speed of 600rpm.
Increasing the fan speed to 1600 rpm does lower the CPU temp but results in an intermittent overclocking failure on boot up.
My home is always maintained to a constant temp of 24C.
So outside enviromental air temp has no bearing to this issue.
Running 4 fans inside the case and it maintains a constant temp of 37C. No matter what the CPU fan speed is set at.