Gigabyte intros GeForce GTX 1080 Turbo OC 8G

[HEXUS]

Stylish 'Turbo Fan' blower style cooler includes a trio of 6mm composite heat pipes.

Read more.

[Corky34]

Am i missing what part of the heat-pipes are composite, they look like your bog standard heat-pipes.

[Shoom]

Am i missing what part of the heat-pipes are composite, they look like your bog standard heat-pipes.

Yeah, you are missing it. Composite means made up of various parts or elements as that is. A bog standard heat pipe would just be a copper tube.

[scaryjim]

... A bog standard heat pipe would just be a copper tube.

Not quite true. A conventional heatpipe contains a phase change coolant, and the inside is coated with a wicking structure that returns the coolant to the heat source once the vapour has condensed. The gigabyte "composite" pipe has an additional inner tube which I assume increases its thermal capacity (although quite how that would interact with the phase change aspect is another question).

But basically, a conventional heatpipe has the coolant in a single tube, this one has it sandwiched between two tubes.

[Corky34]

Yeah, you are missing it. Composite means made up of various parts or elements as that is. A bog standard heat pipe would just be a copper tube.

My understanding of composite is a little different, i thought it meant something made up from two distinctly different materials, something that, despite combining two types of heat-pipes wick structures (sintered & grooved), this isn't, it's still a copper pipe with grooved wicks containing another copper pipe with sintering.

A conventional heatpipe contains a phase change coolant...

AKA distilled water.

[scaryjim]

My understanding of composite is a little different, i thought it meant something made up from two distinctly different materials ...

The word simply means composed of more than one element. It's probably most often used when referring to materials, but that's by no means its only usage. In this case it's referring to the use of both grooved channels and sintering; conventional heatpipes would normally have one or the other.

... AKA distilled water.

Commonly, but not exclusively. Both Methanol and Ethanol are also used in room temperature heatpipe systems, and I suspect that in industrial systems there are more esoteric liquids employed. For a GPU cooler, though, it's certainly likely to be water-based.

[Wrinkly]

My first thought was that the venting area seems small. Perhaps a three slot blower would do much better, produce less noise.

[thrasir66]

...Both Methanol and Ethanol are also used in room temperature heatpipe systems, and I suspect that in industrial systems there are more esoteric liquids employed.

Probably something like Propylene Glycol.