I have nothing to contribute to the thread, it's too far beyond my comprehension levels.
But I do have one word...
Epic.
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But I do have one word...
Epic.
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I'm SO keeping an eye on this thread...
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It looks like a very interesting idea.
What a brilliant idea. go for it.
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I had not taken that into account. But balancing the pressure correctly you could maintain a 0-air environment. Which is the whole purpose of the vacuum. Replace it with absolutely no air, and it is impossible for the water to freeze. Thus allowing sub-0 temps to be fed into the chips as i planned.
Just a slight revision based on gaseous expansion.
I only wish i had the money to do this... and a CPU that'll go higher then mine. Deneb would be perfect for this. NC told me how high it gos... his phase change quite being enough cooling before his chip capped. He got it to 4.7 24/7.
Originally Posted by u238 If the water loop is in a vacuum, the water will boil immediately and change phase to a gas, eliminating the vacuum. If you continue to evacuate the chamber, the water will freeze rapidly due to the work required to change phase. |
Just a slight revision based on gaseous expansion.
I only wish i had the money to do this... and a CPU that'll go higher then mine. Deneb would be perfect for this. NC told me how high it gos... his phase change quite being enough cooling before his chip capped. He got it to 4.7 24/7.
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Know of any other way to prevent water from feezing? Or maybe another liquid that could be used with a much lower freezing point.
Originally Posted by Reflexive Sorry; good shot, but no go. The reason supercooling of water occurs is because at the molecular level the chance of two atoms at low enough temperatures knocking into just the right position to form a hydrogen bond is fairly low. However it has NOTHING to do with the air above the water, nada. As you cool the water the dimensions of vibration collapse, and it becomes easier and easier to freeze. Your pump swirling the liquid would freeze in a heart beat. |
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Depends on how far below zero you plan to go. Antifreeze of some type might work. Or if you want to consider something really exotic i would use mercury
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Originally Posted by Licht Know of any other way to prevent water from feezing? Or maybe another liquid that could be used with a much lower freezing point. |
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Don't know if i want as much mercury as would be needed running in that sort of thing. But i'd typically not know how low i could go, depends on how many phase changers it would take to get it so low.
How effective is anti-freeze?
Originally Posted by jacksknight Depends on how far below zero you plan to go. Antifreeze of some type might work. Or if you want to consider something really exotic i would use mercury
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How effective is anti-freeze?
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Mercury would look amazing
Originally Posted by jacksknight Depends on how far below zero you plan to go. Antifreeze of some type might work. Or if you want to consider something really exotic i would use mercury
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The record on a Phenom 2 940 BE is 6.9GHZ single core. 6.45GHZ quad core. NC Spec got his on phase to 4.7GHZ (24/7 his suicide run was in the 5GHZ range.)
The chip is the perfect candidate to make use of such a setup, which would be capable of 24/7 operation, which LN2 isn't.
Originally Posted by gablain isn't a verry good simple water cooling already far enough for pretty intense overclocking ? |
The chip is the perfect candidate to make use of such a setup, which would be capable of 24/7 operation, which LN2 isn't.
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A 50/50 mix of a typical automotive antifreeze would allow about -40f. You might be able to find some other type of antifreeze thats more heavy duty but im not sure. Just remember antifreeze will freeze at a much warmer temp if you eliminate the water, so make sure you keep a 50/50 mix.
Originally Posted by Licht Don't know if i want as much mercury as would be needed running in that sort of thing. But i'd typically not know how low i could go, depends on how many phase changers it would take to get it so low. How effective is anti-freeze? |
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Alterations can be made. Companies can be called.
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How would it do on thermal conductivity is another issue. Would it remove from it? Maybe it would conduct better. (Doubtful.)
Originally Posted by Dylan How well would the pumping system ( if you plan on using one) take this extreme cold? Im sure any standard pump would lock up at some point. |
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Originally Posted by jacksknight A 50/50 mix of a typical automotive antifreeze would allow about -40f. You might be able to find some other type of antifreeze thats more heavy duty but im not sure. Just remember antifreeze will freeze at a much warmer temp if you eliminate the water, so make sure you keep a 50/50 mix. |
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