The temps could be different for a few reasons. The biggest would be when I reviewed the system it was done on an AMD 2500+ your P4 may just be a hotter running chip. I also mounted the radiator outsi ...
i've bought this kit as well after reading ur review.
the radiator is installed inside my case.
i have pentium 4 3.0ghz LGA
i've tested my system and when the cpu is idle the tempreture is 40C degr ...