Placa De Vídeo Sapphire Vapor-x Hd 4890 2gb Gddr5 870 4.2ghz

Vapor Chamber Technology is based on the same principles as heatpipe technology. A liquid coolant is vaporised at a hot surface, the resulting vapor is condensed at a cold surface then the liquid is returned to the hot surface. The recirculation process is controlled by a wick system.

SAPPHIRE Vapor-X flattens the whole system into a slim chamber - which in the graphics application is mounted in contact with the surface of the graphics chip.

Actually, the coolant is water ? but because the chamber is evacuated to a very low pressure, the vaporisation process occurs at a much lower temperature than normal boiling point. The complex wick arrangement inside the module controls the flow of water and water vapour so that the system can be used in any orientation.

1. Heat source heats Vaporization Wicks.
2. Working fluid, pure water, is easily vaporized due to the extreme low pressure (<104 Tor or less)
3. Water vapor moves easily through the vacuum until.
4. It meets the Condensing Wick - adjacent to the cooled surface - and turns back to a liquid state.
5. The liquid is then absorbed by the Transportation Wick by capilary action and moved back towards the Vaporization Wick.
6. The recycled liquid is then reheated and re-vaporized by the Vaporization Wick and the process repeats.

The patented complex wick system at the heart of Vapor-X