I've a Copper Orb which I tried for the hell of it (got it on Ebay for $14)
Just using the generic white thermal grease, my 1.33 was running right at 50deg C. during normal use. It would go up to 55~57 after few hours of playing UT. Nothing spectacular but certainly well within acceptable range.
The clip was bit difficult to put on but it was very secure once in place. The fan is very quiet which was a plus.
I'm thinking about slapping on a 80mm on top and see what happens.
