Quote:
Originally posted by bigben2k
DOH!
I am betting that the heat from the block got into the water, and the tubing, not being able to withstand the heat, simply gave out.
There would have to be some kind of external force though, so I'd guess either gravity (if the system was open aka not sealed) or vapor pressure (if the system was sealed) which does not imply that the water was actually boiling. Note how the block remained perfectly intact. There could also have been a physical strain on the tube, from a bend.
Who knows, maybe the hose already had a small nick or cut in it, and the heat simply accelerated the burst.
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That's not what vapor pressure is, though. Vapor pressure is a means of describing how easily a liquid evaporates at a certain temperature, but if there's a physical constraint to evaporation (such as a closed container) the vapor pressure isn't going to become a force to burst it.
If that CPU could get to about 105C and stay there long enough for just a little bit of the water on the other side of the block to boil, then yeah, this whole incident would make perfect sense. But that would take at least a couple seconds, and specs on the hottest-running AMDs I've seen say they crap out at around 80C. I'd be amazed of any CPU of that breed could even *reach* 105C before shutting down or self-destructing, never mind stay there for a few seconds.
Anyway, in the pictures it looks like the damage did happen at the kink where the tubing turns about 90 degrees to go to the rad, so it's clear that was the most physically strained part. And in the case of boiling, the burst would more than likely occur very near the waterblock, unless there was an exceptionally weak point somewhere else.
Alchemy