koszer wrote:
It's worth noting that you cannot be really sure the coolant didn't leak just looking at the CPU modules and not disassembling them. When I visually checked my G5 2,7 GHz CPU modules they looked OK, but the overal state of LCS turned out to be very poor. Look here:

The water block developed significant white-greenish residue around itself (O-rings leaking):

o8YecD9.png

The tubing got almost completely clogged by aformentioned residue:

3Jk9TI2.png