What is a "Vapor Chamber" cooler?

[flibberdipper]

I was wondering what it was, and what makes it so good.

[Bluejay0]

Quote and explanation from bit-tech forums on the HD 3870 

HERE

[Samdb]

There is a liquid that is heated and forms into a vapour, it then rises and is cooled by the fan blowing onto it. After it becomes a liquid it returns to the bottom to be heated again.

[flibberdipper]

There is a liquid that is heated and forms into a vapour, it then rises and is cooled by the fan blowing onto it. After it becomes a solid it returns to the bottom to be heated again.

Is it kinda like a heatpipe in a tower cooler, the way the liquid is? And how it transfers the heat?

[Samdb]

Is it kinda like a heatpipe in a tower cooler, the way the liquid is? And how it transfers the heat?

 

Pretty much.

[Guest GRRigger]

Vapor chamber where the heat contacts the liquid and the liquid vaporises. It goes into heat pipes where it condenses because its cooled down. Then its liquid again and the cycle continue.

 

Or it can be just a chamber without heatpipes, but the cooling is done by heat fins on top of chamber where the vapor condenses. 

 

It is same as when you cook something. The water vaporises (at certain temp), when it tuches the lid that is lower temp, it condenses and fall down.

 

Also, if its higher pressure, the liquid needs higher temp to vaporise.

If its near vacuum, then it needs only room temperature to boil. Yep, water can boil at room temp.