I've got a ThunderBird 1.4 over here, had to install
a water cooling system, as it got up to 68C, no matter
which cooler I tried, even fop38. I got a ThermalTake
Aquarious II and it's now down to 33idle, 37full load +
5 if the ambient temp rises a lot.
The "fridge" that cools the water is a really nice heater:-)