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The OCZ Hydrajet cooler, featured upside-down to reaveal the carbon nanotube conductor. (Source DailyTech, Anh Huynh)
The OCZ Hydrojet cooler uses an advanced heatsink material

The first heatsink to make use of directional carbon nanotubes, the OCZ Hydrojet, was on display at Computex 2007. Carbon nanotubes, an allotrope of carbon, are widely regarded as the next major thermal interface material because of their superior thermal conduction properties.  

The contact base of the OCZ Hydrojet is made completely of carbon-nanotubes, which OCZ claims are five times more efficient than copper. Carbon nanotubes have been looked upon as a strong alternative to traditional copper based heatsinks. They are ideal for application in heat transfer products because of their impressive heat-conduction properties.  Carbon nanotube based interfaces have been shown to conduct more heat than conventional thermal interface materials at the same temperatures. In addition, they have shown to be ballistic conductors at room temperature, which means electrons can flow through CNTs without collisions.

Carbon nanotubes are small wire-like structures made out of a sheet of graphene.  The sheet of graphene used to construct CNTs is roughly one-atom thick, and is rolled up into a cylinder. The diameter of the cylinder ranges in the nanometers.

Unlike most other thermal materials, carbon nanotubes are able to move heat in one direction. On the other hand, copper, which is looked upon as one of the more superior thermal materials, moves heat radially. In the case of CNTs, heat is moved along the alignment of the nanotubes.

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Mm,, interesting
By tuteja1986 on 6/9/2007 3:33:13 AM , Rating: 2
What does this mean in real term cooling... Will i be able to cool my E6600 @ 3.9GHz below 30C

RE: Mm,, interesting
By UppityMatt on 6/9/2007 5:04:27 AM , Rating: 3
Whats the point? If your spending $300 on a Cooler to overclock... Just use that 300 to buy a faster processor model. I learned this the hard way by investing a little over 250 on a water cooling system by thermaltake. The gains i made from the water were not as substantial as just upgrading to a higher end processor. And then the pump went out and long story short i spent a hell of alot more. Its going to take quite a few reuses on your system to pay out.

RE: Mm,, interesting
By CplGaydar on 6/9/2007 6:14:06 AM , Rating: 4
With all due respect - if you spent 250 dollars on a watercooling system from THERMALTAKE, you clearly didn't do any research.

It's certainly true that with the new Core 2 Duo chip, watercooling brings LESS of a gain than it otherwise would have. However, the Thermaltake watercooling systems are so woefully inadequate that it's not surprising you didn't get the results you wanted; the pump (on the most powerful system) outputs at a mere 500 Litres/Hr, compared to the 1200l/hr or 1500l/hr on most custom-built systems; the tubes are 3/8" rather than the less restrictive 1/2", the radiators are poorly designed and use ALUMINIUM, which is a joke, and the waterblocks have been described as 'archaic'.

Apologies for the off-topic, but you can't just slate watercooling because you had one bad experience.

RE: Mm,, interesting
By PlasmaBomb on 6/9/2007 6:28:11 AM , Rating: 2
It also depends what you are into, some people don't really need the performance and overclock for the challenge and enjoyment. Some people just like to have high end kit or something a bit different from the normal.

Don't forget if this is successful the prices will drop and you could well end up owning a CNT cooler in the future.

RE: Mm,, interesting
By Mojo the Monkey on 6/10/2007 4:30:59 PM , Rating: 3
I use watercooling and I dont overclock anything in my system at all. I do it for 2 reasons. First: noise. When my computer is on, its dead silent (I use a reserator; nothing but good things to say. the only moving fan is 135mm silent power supply fan). Second: its just fun. Working inside my computer is kind of a hobby.

This kind of product (nanotube) may be the kind of thing that allows for silent/passive cooling systems WITHOUT water. I mean, if my water cooling system ever gave out and there was a simply non-water, silent replacement for roughly the same cost, I would buy it. I dont think I'm alone when I say that I've HAD the computer that sounds like a jet taking off, but I'm never going back.

RE: Mm,, interesting
By Archmaille on 6/16/2007 4:21:00 PM , Rating: 2
See that's funny I use water cooling for the exact same reason! Well it's also nice to know that my computer will last much longer since enough though overclocked by 500mhz still runs cooler than it did with a Zalman CNPS9700. My system is dead silent and I love it (well, other than the four Delta TFB1212GHE fans that each put off 65 decibels)

Okay obviously I'm kidding about my computer running silent, but yes this shows two extremes of why someone might choose a more expensive water cooling setup. Mojo the Monkey here has it for silent operation, I on the other hand have it for extreme overclocking purposes. Sure I paid $500 for my water cooling setup, but seeing that my 3700+ is running at 30° C while at 2.7ghz is just plain awesome! If I can get better cooling from something that costs the same/less I say bring it on!!!

RE: Mm,, interesting
By xsilver on 6/9/2007 6:30:06 AM , Rating: 3
I agree that thermaltake = crap water cooling
but you do you have to admit that watercooling will never become mainstream - too many potential problems/costs for small gains. especially now that regular air cooling has kicked it up a notch with heatpipes and whatnot.

but true - if this thing is going to cost $100+ - it will be hard to market to a large audience.
personally I think the thermalright ultra 120 is already too expensive. (eg. like the OP said you could just get a better cpu for the $$ instead)

RE: Mm,, interesting
By CplGaydar on 6/9/2007 8:46:13 AM , Rating: 5
If you would rather spend money on a better processor, you're clearly not an overclocker. If you're not an overclocker, you're not going to spend £40 (around 80 in monopoly money) on a heatsink; because there would be no need to do so. So the whole 'might as well spend the money on a better CPU' is wholly without merit!

The fact that you are not in their target audience doesn't mean no one else is either.

RE: Mm,, interesting
By xsilver on 6/9/2007 10:27:51 AM , Rating: 3
i never disagreed with you, but I am an OC'r - and yes overclocking doesnt all have to be about performance.

but the fact remains that thermaltake and ocz etc. are trying to market products to the masses to cater for overclocking.
However these products are unlikely to ever become mainstream. In fact I think I think part of the allure to overclocking is the fact that it IS niche.

Some may draw analogies to something like people ricing up their cars in something like "pimp my ride" but I wont comment on that.

oh also, on your logic, just because YOU dont think that anybody would be insane enough to spend $80 on a cooling setup without overclocking; it doesnt mean that somebody else wont. In fact I pretty much guarantee that there are plenty of people that spend $$$ on cooling without overclocking at all.

RE: Mm,, interesting
By tehfire on 6/9/2007 11:46:19 AM , Rating: 3
As an avid Silent PC'er, I can attest to this. Both overclockers and silent PC enthusiasts use high-performance heatsinks - one with high-speed fans for max cooling and the other with low-speed or no fans for the quietest cooling. My current setup is overclocked, but I know many people who pay $60 or more for heatsinks on non-overclocked systems.

RE: Mm,, interesting
By CplGaydar on 6/9/2007 6:00:19 PM , Rating: 2
Xsilver: So if not about performance, what is overclocking?

You are right about heatsinks, some people will pay more money for something they don't use - but for those people for which cooling their PC is a hobby, watercooling is a much more likely choice. Presumably, we can agree that cooling your PC with a fancy heatsink is pretty much pointless UNLESS you're overclocking, or going for a silent system. This brings me onto tehfire's point.

The argument was that the Ultra 120 was 'too expensive' at its current price. I don't see why you would need to get the most expensive cooler on the market just to get a silent, stock-clocked PC - especially when the stock heatsink will pretty much do the job.

As for watercooling, it's as mainstream as it needs to be. Even Dell sell it now.

RE: Mm,, interesting
By tehfire on 6/9/2007 8:20:58 PM , Rating: 3
Well the Thermalright 120 Extreme and Scythe Ninja are some of the best passive heatsinks. They do so well when running fans that they can actually be used (in some cases) without a fan at all, and that is why they're so prized. I can see your point, most people will find the stock Intel Core2Duo HSF quiet, but not the most picky SPCers.

And actually, air cooling at its best is quieter than watercooling. It doesn't cool as well, but it is much quieter.

SPCR ftw

RE: Mm,, interesting
By Peacemaker on 6/10/2007 3:45:25 PM , Rating: 3
Ever heard of a passive water cooling system? I've been running my reserator on x2 4400 for 2 years now, silent, idle/load 30/42.

I hope DT follows up on this as I'm curious to see some test numbers.

I wish for a silent pump yet strong enough to circulate cooking oil, that would cool extremely well and attach an "oil block" to every freaking heat source in the case and a have a dead silent pc.

RE: Mm,, interesting
By Hare on 6/10/2007 3:48:32 PM , Rating: 2
Why would you want to use oil instead of distilled water with added corrosion etc. protection?

RE: Mm,, interesting
By Mojo the Monkey on 6/10/2007 4:37:09 PM , Rating: 2
I read some articles about getting a water-tight case and filling it with cooking oil, thereby submersing your entire system in the oil for silent cooling - I'm guessing thats where this idea comes from.

RE: Mm,, interesting
RE: Mm,, interesting
By tehfire on 6/11/2007 12:56:33 AM , Rating: 2
Doesn't a reserater still have a pump? That's the problem...water pumps are too loud for use in Silent PCs

RE: Mm,, interesting
By Peacemaker on 6/11/2007 3:42:51 AM , Rating: 2
Why don't you try or read about a product before you say something about it that might be completely wrong?

Yes, the reserator has a pump but it is silent. The only way you can heat the faint hum is by pressing your ear against the top, that's why they included a flow indicator so you can see if it's working.

Oil would increase performance (better heat dis.) and I could add a couple of blocks and somewhat sound-proof the hard drives to get close to silent pc...

Overclocking does get more out of the computer, the problem is that in order to really see benefits (FPS in games, faster apps) you need "drastic" measures (ever ran a compressor indoors?).

Regarding OC: It's all nice if OC can get me extra 10 FPS in Crysis when it comes out but I'll also get 80 dB's from the compressor needed run cooling to take all the extra heat away created by aiming for those 10 FPS in the first place.
Is it a viable day in day out solution? Nope. Besides, >stock voltage will shorten the lifespan. Chasing records is cool with extreme OC is cool as long as no one pretends that it'a still a regular desktop for daily (dare I say 24/7?) use.

Benefits one might get from a good (expensive) sound card may be nullified by noise today's computers make, that's where WC enters the equation. It's variables(passive active WC) that allow for "trade" between noise/efficiency in diff. coolers are what makes WC appealing to a wide array of consumers.

RE: Mm,, interesting
By Hare on 6/11/2007 9:28:57 AM , Rating: 2
Overclocking does get more out of the computer, the problem is that in order to really see benefits (FPS in games, faster apps) you need "drastic" measures (ever ran a compressor indoors?).

Really? I'm running my E6300 @ 3Ghz, performance increase (1.2Ghz oc) was easily noticed. Noise is not an issue. I have a Tuniq Tower at around 5V and it can't be heard outside the case.

RE: Mm,, interesting
By xsilver on 6/9/2007 8:43:57 PM , Rating: 2
So if not about performance, what is overclocking?

well I answered that already - its about bragging rights and bling as well as performance.

RE: Mm,, interesting
By GlassHouse69 on 6/11/2007 4:01:56 PM , Rating: 2
yes, I have paid 300 dollars over what i needed to for silence and not overclocking. nanotubes will provide some nice alternatives to watercooling as well as be awesome for watercooling setups. to take the heat away from a chip quickly and let it be picked up by the water is how it all works.

RE: Mm,, interesting
By Archmaille on 6/16/2007 4:29:54 PM , Rating: 2
However these products are unlikely to ever become mainstream. In fact I think I think part of the allure to overclocking is the fact that it IS niche.

You are probably correct, as will Heatpipe coolers never become mainstream because they too are marketed towards overclockers. Nevermind the fact that most new processors today come with a heatpipe cooler in the box with the CPU that's irrelevent.

For someone to say that it will NEVER become mainstream is just foolish. Watercooling might not ever become mainstream because of the difficulties of using it, and little gains from using a craptacular system, but something like this may see mainstream use in 2-3 years. Not saying that people won't have better nanotube coolers marketed for the overclockers, but I'm sure they'll find a way to make this thing available for less to the mainstream. More effective than the current heatpipe offerings, but less effective than the more expensive ones made for overclockers.

RE: Mm,, interesting
By essjae on 6/10/2007 4:57:07 PM , Rating: 3
My thermaltake LCS system works fine. It's dropped my CPU (x6800 @ 3.47GHz) by 10-20 deg, and my 8800GTX by 40-50 deg, at idle. It's also got 1/2" tubing standard, not 3/8".

I did do a lot of research and found that I didn't want to spend the $$$ for a custom WC system, so I got an LCS case for $220 and a 8800GTX block for $60.

Not everyone is an extreme overclocker, extreme gamer, etc and don't need extreme watercooling.

RE: Mm,, interesting
By Goty on 6/9/2007 2:03:03 PM , Rating: 4
It ultimately depends on the ambient temperature.

RE: Mm,, interesting
By dajeepster on 6/9/2007 2:20:08 PM , Rating: 2
exactly what this guy said. The best you'll do is ambient temperatures.. but then that is really good to.

if you can get it below ambient temperatures without having to supply power to it... I would highly suggest you keep it a secret until you patent it in every country that has a patent system and then get yourself lots of body guards because you will become richer than (Bill Gates)^2.

plus you've just broken the laws of physics and the universe will come to a screeching halot

RE: Mm,, interesting
By Dactyl on 6/9/2007 3:21:48 PM , Rating: 2
if you can get it below ambient temperatures without having to supply power to it... I would highly suggest you keep it a secret

Nobody tell WikiPedia!
(search for "freezing point")

RE: Mm,, interesting
By Treckin on 6/9/2007 3:37:33 PM , Rating: 1
That had absolutely nothing to do with what we were discussing.. The AMMONIA in the oil has a lower freezing temp than the oil, and therefor wont freeze. Think of the ocean. The salinity wont allow it ti freeze at standard Terran temperatures.
The point the poster made was that it would defy the baser principals of thermodynamics for air-cooling to reach a temperature lower than the ambient temperature of the surrounding air. Of course, if you cooled it with a gas other than air (analogous to the ammonia in the oil), than reaching below ambient temps would not be far off. Their are also phase change systems that are pretty effective, however draw a lot of power.

RE: Mm,, interesting
By Dactyl on 6/9/2007 5:08:25 PM , Rating: 3
It's not about the temperature of the oil, it's about freezing the permafrost under the pipeline, which normally melts at that time of year, which would destroy the pipeline (if the ground on which it rests melted).

A passive, self-contained phase-change cooling system involving vertically-oriented tubes of ammonia stuck on top of a CPU could theoretically lower the CPU below ambient temperature--especially when the CPU is off! I don't know if it would transfer heat efficiently enough to be useful for cooling CPUs when they are on (or OCed), but it would cause temperatures at the base of the tubes to be below-ambient while the CPU was off.

I think the main reason this approach isn't used is because below-ambient temperatures lead to condensation, which is no good inside your computer case. That's why phase change coolers seal off the area around the CPU completely (also so people aren't injured by touching something at extremely low temperature). There's no reason a passive phase-change cooling solution could not work, except perhaps that it wouldn't cool the system enough to keep the CPU from overheating.

RE: Mm,, interesting
By Goty on 6/9/2007 8:09:38 PM , Rating: 3
*psst* Permafrost doesn't melt. Hence the name perma frost.

RE: Mm,, interesting
By PlasmaBomb on 6/9/2007 9:14:23 PM , Rating: 3
Goty is right about the perma frost.

The system is unlikely to be phase change as the permafrost temperature at the depth of the foundations is unlikely to vary much from -5°C which is well above anhydrous ammonia's boiling point (-33°C).

RE: Mm,, interesting
By dok405 on 6/9/2007 9:59:23 PM , Rating: 3
*pssst* To be classed as permafrost, it only has to be below the freezing point for more than 2 years. I wouldn't quite call that perma .

RE: Mm,, interesting
By masher2 on 6/9/2007 10:08:00 PM , Rating: 5
You cannot cool below ambient without an energy input of some sort...this is the second law of thermodynamics. If this wasn't true, you could easily create a perpetual motion machine.

Ammonia-absorption freezers still use energy. They just use a heat source, rather than electricity. And while a savvy person might ask "why not use the heat of the cpu itself?" a slightly savvier person will quickly realize why this won't allow below-ambient cooling either.

RE: Mm,, interesting
By dajeepster on 6/10/2007 5:16:29 PM , Rating: 3
thank you masher2... I knew that taking second semester physics wasn't a total waste for me :D

RE: Mm,, interesting
By MrPickins on 6/10/2007 12:29:58 PM , Rating: 2
Each heat exchanger is thermally coupled by a heat pipe to the base of the VTM. Running through the VSM, the heat pipe transports heat from the VTM base to the heat exchanger. Since ammonia, the working fluid in heat pipes, has a freezing point lower than the permafrost, the heat pipe works throughout the year, even during the coldest winter nights

The cooling system you are referring to are heat pipes, which we already cool our CPU's with. And no, they don't go below ambient.

RE: Mm,, interesting
By MrTeal on 6/10/2007 12:31:51 PM , Rating: 3
You're both incorrect. There are two seperate systems here, and they're getting confused.

1. When the pipeline is buried unground, there is a refridgeration system in place to prevent the hot oil from melting the permafrost. This refridgeration system does not use ammonia, it uses brine cooled below the freezing point of water.

2. When the pipeline is above ground, to prevent the heat from passing through the metal supports into the ground and cause melting around them, they have a heatpipe system. Nothing is cooled below ambient, but the 50 degree celsius heats up the pipeline, but the heatpipe setup helps keep the supports near ambient temperature, providing a thermal break between the ground and pipeline. This is where the ammonia is used.

RE: Mm,, interesting
By Goty on 6/10/2007 6:08:49 PM , Rating: 2
Wouldn't brine be a little corrosive?

RE: Mm,, interesting
By MrTeal on 6/10/2007 7:39:17 PM , Rating: 2
Depends on what they use for piping. The brine doesn't go through the oil pipeline, it's very possible they use plastic lines.

RE: Mm,, interesting
By sapiens74 on 6/13/2007 5:55:02 PM , Rating: 2
When I first read that last line i thought it read "Screeching Harlot"

"So, I think the same thing of the music industry. They can't say that they're losing money, you know what I'm saying. They just probably don't have the same surplus that they had." -- Wu-Tang Clan founder RZA

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