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[Guru3D] Calyos NSG Passive Cooling - Page 5

post #41 of 64
Quote:
Originally Posted by prjindigo View Post

There are many problems with this system... the first one is that the average BLOWN heat-pipe heatsink for regular hardware has three to five return wicks and enthusiast kits like the Noctua D14 have six to ten fluid returning wicks in order to cycle the fluid quickly enough to keep the unit and processor below the v.p.p. of the cooling compound so that it CAN cool off and come back to the heat exchange plate at the processor/gpu.

I doubt the speed the fluid can flow over a single or even a bundle of wicks in one pipe is going to be sufficient to return it and even if they're using a gravity feed fluid return the differential in pressure gradient is likely not enough to maintain the flow when the heat starts to seep down the aluminum? return pipe.

I doubt their "no leaks" is even possible let alone plausible. This kind of aluminum become brittle over time - the pipes should be made of brake line steel.

The system will return to a partial vacuum when it cools, just how large of a vacuum depends on the manufacture but as of right now the reason they use copper alloy heatpipes on heatsinks is because its easy to keep soft copper from fracturing when bending it while still maintaining a thick enough wall to keep leaks from occuring.

So while I don't think Thunderf00t should be shown this pie-in-the-sky, I'm betting its facing far more problems than would be worthwhile to deal with.

Additionally I'd point out that their demo displays are all rendered and fail to show any form of positive air-flow cooling capacity to stop voltage regulators, chipsets and other components from incinerating from being turned on.

Ive built fully passive systems before. None of the things you are presenting as problems are actually problems.

The case it is made for is open air, meaning that convection moves the air over the board components. High end boards are so overspeced in the VRM and cooling areas that passive cooling is fine even with moderate overclocks. Convection also moves air over the MASSIVE heatsink because of the effects of thermodynamics and fluid dynamics.

The piping is not the same as 'heatpipes', it flows a fluid through the system using thermal expansion and convection. Its a pumpless liquid loop, which has been used by hobbyists in exotic cooling circles for some time (link). This is why the input/output tubes are of different sizes. Also, you have to make the whole system out of the same metal to prevent potential difference that leads to corrosion.
Edited by KarathKasun - 4/28/17 at 4:23pm
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post #42 of 64
Quote:
Originally Posted by JackCY View Post

Problem is it's not very versatile, rather custom made solutions. And outside the consumer PC show cases they do industrial which isn't fanless.
Well, on enterprise it's much harder to eliminate the use of mechanical air movement. It's fanless for consumer use because they know you won't fill a room with high performance systems and still expect passive air movement to be adequate.

For home use it's an elegant solution to many old issues.
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post #43 of 64
Quote:
Originally Posted by Mookster View Post

Well, on enterprise it's much harder to eliminate the use of mechanical air movement. It's fanless for consumer use because they know you won't fill a room with high performance systems and still expect passive air movement to be adequate.

For home use it's an elegant solution to many old issues.

Exactly why I'm giving it a shot.
    
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post #44 of 64
Quote:
Originally Posted by BBEG View Post

Exactly why I'm giving it a shot.
I will be too, eventually. I'm just waiting to see how they tackled the issue of compatibility. I don't like the idea of upgrading brackets and such whenever I purchase a new GPU or motherboard. I can see there being issues with VRMs, chipsets, and memory too, but I remain very interested.

Silence, at last, would be nice in the enthusiast PC world.
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post #45 of 64
Motherboards are easy, because it's just ATX standard mounting. CPUs are likewise easy because there aren't that many sockets to plan for; many commercial cooling systems are versatile enough to cover Intel and AMD options. The GPU will be tougher, though, and there's no way to make it easier. The highest end Nvidia will be covered (this much they've assured me), but beyond that it's hard to say.

For my part, I already have the GPU for it. Now I just need to wait until Fall to see what Intel does with Coffee Lake. I know Calyos staff are excited about Coffee Lake too so I have no doubt they'll be compatible.

I do very much look forward to a truly inaudible system. Even with a team of 500 rpm Gentle Typhoons / Noiseblocker Multiframes, I should be quieter than any other system I've made (to include my brother's high end custom loop).
    
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post #46 of 64
I just finished my review of their system, it's really cool.
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post #47 of 64
My concern is the vertical GPU placement, blocking the usage of all other PCI-E slots.
post #48 of 64
They spoke of this often for people who want multi-GPU setups. It sounds like there will be an option to have longer case wall standoffs so we can plug the GPUs into the PCIe slots normally. This would allow use of the other PCIe slots.
    
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post #49 of 64
Quote:
Originally Posted by BBEG View Post

They spoke of this often for people who want multi-GPU setups. It sounds like there will be an option to have longer case wall standoffs so we can plug the GPUs into the PCIe slots normally. This would allow use of the other PCIe slots.

Manufacturer comment on Kickstarter seems to indicate that dual GPU setup may have both GPUs having vertical placement, still blocking usage of other PCI-E slots.

However, I am wondering if Caylos is interested in selling just the CPU/GPU blocks and heatsinks. I can see a custom aluminum open frame case, with three Caylos heatsinks for a dual GPU system. I will further add three very slow speed 200mm fans at the bottom to push air upward. I think this will add very minimal noise but significantly cool VRMs and other vital components, like that broiling M.2 SSD, behind the GPU, in the Kickstarter configuration.
Edited by mumford - 4/28/17 at 6:58pm
post #50 of 64
Quote:
Originally Posted by Sin0822 View Post

I just finished my review of their system, it's really cool.

In the TweakTown review, why wasn't there a straight-forward "Temperatures" graph? Unless I've overlooked it (I've only just woken up...)

http://www.tweaktown.com/reviews/8160/calyos-nsg-s0-100-silent-fanless-gaming-pc-review/index6.html
    
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