Pumpless watercooling

[Xlucine]

I hear a lot of people complain about pump noise with the pumps of water cooling systems, so has anyone tried to make a thermosiphon-based cooling system? Googling doesn't reveal anything from within the past decade or so.
Since it relies on the difference in density between hot water and cold water you'd need a good head of water above the hot running components, so something like the zalman reserator1 with pump removed on top of your computer case should work well. It won't set any records, but compared to fanless heatsinks it should be a big improvement (and has the possibility of a silent GPU that doesn't take up all your expansion slots)

[flearider]

just get a quieter pump .. ?http://www.overclockers.co.uk/showpr...962&catid=2141

[BattFink]

Most of the cooling effect of a water cooled loop comes from the flow, so really wouldn't want to rely on natural convection.

As long as the pump has been properly de-coupled from the chassis, it'll be silent. I've got a pair of Laing D5's running in my chassis (running at max setting) and you cannot hear them over the hard drive in my Sky HD box in the room

[GoNz0]

mine also run at 7v most of the time also on rubber mounts so near silent, about the same as the fans that are in quiet mode. consider the koolance tms kit to run them.

[OneIT]

I have seen a system with the pump disconnected and depending on the way it is set up this can work, but its very limited and doesnt offer great cooling.

You would need a cooling block with outlet higher than the inlet so that the heat makes the warm coolant rise, then the outlet on the radiator should also be lower than the inlet.

This makes it very hard to build and to be honest I wouldn't want to rely on it!

I would also recommend a quieter pump.

[Taniniver]

Seems to be just what you are looking for, if it ever makes it to market!

http://www.tomshardware.co.uk/silver...ews-48151.html

[Xlucine]

Huh. that's a hell of a coincidence - I swear I'm not some astroturfing marketer