I am using the ninja with a 12cm fan. The temps I quoted were actually wrong, I have downloaded Intel TAT which reads the temps straight from the internal diode, and running Prime 95 and Superpi 32M together, the highest I hit is 51 degrees even though I have upped the vcore to 1.3 and running at 3.4Ghz.
The case is a generic black thing.........
Voodle....what are u using to measure temps? I think a lot of progs read Core2Duo temps wrong....