Phase-change cooling is nothing new; the latent heat of vaporisation and condensation make for an especially effective method of heat transfer (see http://en.wikipedia.org/wiki/Latent_heat and http://en.wikipedia.org/wiki/Computer_cooling#Phase-change_cooling).
It's always nicer when you can do it without a compressor, but as far as I can tell the only major innovation here is the "wick" technology. The only time I've ever read about vaporisation coolers on production (as opposed to experimental and demonstration) systems is on supercomputers, where individual CPUs have a closed module attached inside which the vaporisation and condensation occurs. This only really works when you know what the orientation of the module is likely to be (since the gases tend to bubble 'up' through the more-dense liquids), which I gather is the main reason why you don't see this on PC CPU and GPU coolers, since they may be mounted in a variety of orientations.
It looks as though the Vapor-X retains all of the liquid within the wick, which means that it would work [almost?] as effectively upside-down, so thumbs up for the engineering!
nice indeed, I was waiting for nice and quiet card #
Posted Tuesday 21st April 2009 14:17 GMT
last week checked few other reviews and then ordered its bigger brother - 4870 2GB. Can't hear it at all, perhaps because power supply started whining contest and won straight away. Need bigger one , 600W won't do anymore with these big cards ...
The reduction in power consumption and enhanced cooling is not that big a surprise when you take into account the fact that this newer version of the card uses the same updated board layout that the dual-slot cooler model uses. In the photo of the dual slot cooler version you can clearly see that the ram cooling heatsink and power circuit capacitors are located towards the duct end of the card like in the latest review model. This enhanced board layout requires less power and with the addition of the dual slot fan produces a lot less heat. This review is mostly a testimony to the effectiveness of the new cooler.
Intel Core i7 I7-920 Quad Core Processor (2.66GHz, 4x256kB, 4.8GT/s QPI, LGA 1336 Socket B)
AMD Phenom II X4 965 Black Edition Quad Core Processor (3.4GHz, 6MB L3 Cache, 4x512KB L2 Cache, 2000 MHz Bus, Socket AM3)
Asus P7P55D Motherboard (Intel Socket H LGA1156, P55 Express, ATX, 16GB DDR3)
Intel Core i5 750 Qaud Core Processor (2.66GHz, 8MB L3 Cache, 2.5 GT/s Bus, Socket H LGA1156)
Asus M4A785TD-V EVO AMD 785G/SB710 Socket AM3 ATX Motherboard
Sapphire Vapor-X HD 4850 vapour-cooled graphics card
Peter Flynn
35°C #
Posted Thursday 16th April 2009 11:52 GMT
That is a really good temperature for a graphics card such as this. In the market for a suitable card and I think this may be it...
Anonymous Coward
Cooler availability? #
Posted Thursday 16th April 2009 12:15 GMT
Most impressive. Can you get the coolers seperately and will they fit my hinges?
Satan
Timothy Creswick
Phase-change coolers #
Posted Thursday 16th April 2009 14:17 GMT
Phase-change cooling is nothing new; the latent heat of vaporisation and condensation make for an especially effective method of heat transfer (see http://en.wikipedia.org/wiki/Latent_heat and http://en.wikipedia.org/wiki/Computer_cooling#Phase-change_cooling).
It's always nicer when you can do it without a compressor, but as far as I can tell the only major innovation here is the "wick" technology. The only time I've ever read about vaporisation coolers on production (as opposed to experimental and demonstration) systems is on supercomputers, where individual CPUs have a closed module attached inside which the vaporisation and condensation occurs. This only really works when you know what the orientation of the module is likely to be (since the gases tend to bubble 'up' through the more-dense liquids), which I gather is the main reason why you don't see this on PC CPU and GPU coolers, since they may be mounted in a variety of orientations.
It looks as though the Vapor-X retains all of the liquid within the wick, which means that it would work [almost?] as effectively upside-down, so thumbs up for the engineering!
Ashley Pomeroy
Spinny thing #
Posted Thursday 16th April 2009 14:17 GMT
From the top it looks like an older version of the Batmobile.
Joe K
Nice #
Posted Thursday 16th April 2009 14:30 GMT
About damn time they did something new, and effective, with cooling tech.
Sick of loud buzzy fans.
Bronek Kozicki
nice indeed, I was waiting for nice and quiet card #
Posted Tuesday 21st April 2009 14:17 GMT
last week checked few other reviews and then ordered its bigger brother - 4870 2GB. Can't hear it at all, perhaps because power supply started whining contest and won straight away. Need bigger one , 600W won't do anymore with these big cards ...
Will
Actually... #
Posted Tuesday 21st April 2009 17:38 GMT
The reduction in power consumption and enhanced cooling is not that big a surprise when you take into account the fact that this newer version of the card uses the same updated board layout that the dual-slot cooler model uses. In the photo of the dual slot cooler version you can clearly see that the ram cooling heatsink and power circuit capacitors are located towards the duct end of the card like in the latest review model. This enhanced board layout requires less power and with the addition of the dual slot fan produces a lot less heat. This review is mostly a testimony to the effectiveness of the new cooler.