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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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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
quote:
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
quote:
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
quote:
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.


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