Heatpipe cooling on a vid card

[Septic_12]

Interesting, and it looks nice. Would like to know if it actually does work [well] on a GF4.

Quote from site - "it can cover geForce4 Ti series without a problem."

Shame the card in the pic is a GF2 MX :(

http://www.zalman.co.kr/english/product/zm50-hp.htm

[_N_]

kindda like water cooling on air, :D

they use this on laptops quite a lot,

[KingJackal]

Originally posted by Septic_12
Shame the card in the pic is a GF2 MX :(


You obviously didn't see the OTHER PIC:

http://www.zalman.co.kr/images/0204/computex/b-img/27.gif

;)

[Tojja]

Would expect no better performance than a std budgo active sink (possibly worse performance even). But nice and quiet....and low profile

[Septic_12]

Originally posted by KingJackal


You obviously didn't see the OTHER PIC:

;)

Oops! True, true, vid cards weren't black so didn't bother to look ....

:D

[KingJackal]

Originally posted by Septic_12
Oops! True, true, vid cards weren't black so didn't bother to look ....

:D

Haha - dude, you and your black :rolleyes: :D. I suppose the one other niggle with these sinks is the fact that they're left that horrible shiny copper color, huh? :p

[DiscoStu]

One of the manufacturers had a heatpipe installed as an optional extra.
Can't remember the company though and I'm too lazy to look at the moment.

Think it was evga or something................

[Solid Snake]

Yes, eVGA made up [?] the heat pipe thing and it worked horribly. It was the worst cooling performer out of the whole lot. Even worse than the stock coolers by nVidia. However I think they filled the pipe with water or some sort of liquid and that is why it failed so miserably. I think the Zalman heatsink are better design but that heat pipe sure does make the GeForce 4 a lot longer than it already is, so it might cause problems for people with small cases.

[Tojja]

Um, dude, heatpipes WORK by being filled with a liquid, like water or something.

It is just under the heat and the pressures under which the pipe is sealed, that liquid goes through a constant evaporation/condensation phase

In the porcess heat is removed at one end (evaporation is an endothermic reaction) and condensates at the other (and exothermic reaction) - or the other way around.

Orientation of the device is the key to success, as even with wicks to wick the liquid back tot he evaporating end, there are optimal angles for performance.

So there :)

[Solid Snake]

Oh ... oops :)

/me.learn == true;

Thanks, I'll keep in mind of that.

[AcurA]

am i missin something... the point of a heat pipe is to move heat away from the GPU as fast as possible to the heat sink. The heat sink is on the GPU allready... where is the heat pipe taking the heat 2?????

My understanding was

[Hotstuff]=====HP======[HeakSink+fan etc]

[Tojja]

Aye - you be correct. They employ a passive 'sink at the hot end, which lets the whole thing down (IMHO) - just like a pelt, your chip cooling is only as good as your hot-side cooling.

You are right on the money - the heat (energy) has to be got rid of somewhere (ppl often think heatsinks are miracle destroyers of energy - just not in so many words:))

[p01s0n_p1e]

heh- my laptop has one of those- only not quite so big.

think small, thin copper square- with a very small pipe comeing off it and a fan blowing air over small pipe :D

thats dell for ya



at least i think that is the air pipe or whatevers it calxxored

[AcurA]

Hey unless it's using the heat pipe to heat up the ram chips.... cause they work better when hot ?!!?!?

I also wonder how u use a heat pipe horizontally?! I mean the inner refrigerant is a gas and will act like one... ie convection applies.
Whats that heat sink called - with 2 circular heat pipes on each side, to me this would work better in a desktop case instead of a tower configuration.

ans yes pie - i think they use heat pipes in lappy using the casing as heat exchanger.... VERY cleaver.

[Deviant]

Originally posted by Tojja
Um, dude, heatpipes WORK by being filled with a liquid, like water or something.

It is just under the heat and the pressures under which the pipe is sealed, that liquid goes through a constant evaporation/condensation phase

In the porcess heat is removed at one end (evaporation is an endothermic reaction) and condensates at the other (and exothermic reaction) - or the other way around.

Orientation of the device is the key to success, as even with wicks to wick the liquid back tot he evaporating end, there are optimal angles for performance.

So there :)

Yeah that's it from my understanding, but I can't remember what liquid it is that they use.

[AcurA]

air-con refrigerant as i understand.

[Tojja]

Deviant - no offence, but I know what I am talkign about, but cheers for the confirmation :D

The easiest and most comon fluid to use is water. At the pressure in the heatpipe, it boils at around 30C (or similar), making it ideal.....