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Dual 1.42 Heatsink Picture
- Thread starter iJon
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Nice picture is it a lot of fins as in normal heat sinks or is there a heat pipe in there somewhere.
Well, not spaced fins like what I think of in a normal heatsink, i.e., with space for air to move between and carry off the heat conducted out from the chip. The 1.42 sink is more or less a solid looking block. I have no idea what a heatpipe looks, so I can't shed any light on that. It would have to be visible (at least a little) from the outside as you can't see into the copper block.
Re: Re: Re: copper used to be just for PC geeks who overclocked a lot
than XP pro? nah. probably just the dualies.
Are you planning to dip it in water? If you keep it running, the heat will keep off any moisture.
anyway, a verdigris heat sink might look pretty cool.
Excellent. I just put the USB card you guys sent. I think your email must be in my yahoo account - I'll go and look for it. Thanks iJon.
Originally posted by Le Big Mac
Are you planning to dip it in water? If you keep it running, the heat will keep off any moisture.
anyway, a verdigris heat sink might look pretty cool.
Copper oxidizes, which means it reacts with oxygen, that being in the air. heat notwithstanding, it should oxidize fairly quicky with the fan moving air around so fast...
it looks like it's been treated tho...
pnw
i think that is right, hehe, but i think the water corrodes the coating on copper roofing and such, which lets it oxidize, which is what threw him off. is that right?
HEATPIPES!
This was in 1999 dude. Sorry, no XP or OSX. NT was the only Dual CPU option (well for running common programs). But this is getting more and more off topic. This is a Mac forum.
Back to heat pipes... It looks like there are 4 in there, sticking out the top (as on my PCs sink). That's basically the only way the sink could work effectively. Heat pipes can be anywhere from 3mm thick to a foot thick. The ones here look to be about 5-6mm thick (1/4 inch).
How they work: Heat pipes have a gas that is partially liquid at room temperature. The liquid, because of gravity, is at the bottom. When heat builds up, the liquid boils. It rises to the cooler fins, and condenses, releasing the heat (remember chem. Class?). This does not go back and forth, but rather is in a constant flow. The liquid flows down the sides of the pipe and the gas goes up the middle. This is an EXTREMELY effective way of moving heat, in fact 100 times or more fast than copper itself. Most (all?) laptops use heat pipes, but instead of gravity returning the liquid to the bottom they have a wick or ridges in the walls of the pipe.
I live in Alaska, and the trans-Alaska oil pipeline is suspended on pillars that contain heat pipes to keep the ground frozen and solid year round. In Fairbanks, it gets to -50 degrees in the winter. The liquid in the (relatively) warm ground at, say, 0 degrees, boils, and the whole cycle happens to slowly cool the ground to the air temperature. In the summer, when the air gets as high as 90 degrees, nothing happens, because the heat only travels one way. The ground was chilled enough in the winter to make it through the summer frozen. This is called permafrost. Theres a picture of me in Der Spiegel Magazine in an article about Alaska permafrost, but thats another story
This was in 1999 dude. Sorry, no XP or OSX. NT was the only Dual CPU option (well for running common programs). But this is getting more and more off topic. This is a Mac forum.
Back to heat pipes... It looks like there are 4 in there, sticking out the top (as on my PCs sink). That's basically the only way the sink could work effectively. Heat pipes can be anywhere from 3mm thick to a foot thick. The ones here look to be about 5-6mm thick (1/4 inch).
How they work: Heat pipes have a gas that is partially liquid at room temperature. The liquid, because of gravity, is at the bottom. When heat builds up, the liquid boils. It rises to the cooler fins, and condenses, releasing the heat (remember chem. Class?). This does not go back and forth, but rather is in a constant flow. The liquid flows down the sides of the pipe and the gas goes up the middle. This is an EXTREMELY effective way of moving heat, in fact 100 times or more fast than copper itself. Most (all?) laptops use heat pipes, but instead of gravity returning the liquid to the bottom they have a wick or ridges in the walls of the pipe.
I live in Alaska, and the trans-Alaska oil pipeline is suspended on pillars that contain heat pipes to keep the ground frozen and solid year round. In Fairbanks, it gets to -50 degrees in the winter. The liquid in the (relatively) warm ground at, say, 0 degrees, boils, and the whole cycle happens to slowly cool the ground to the air temperature. In the summer, when the air gets as high as 90 degrees, nothing happens, because the heat only travels one way. The ground was chilled enough in the winter to make it through the summer frozen. This is called permafrost. Theres a picture of me in Der Spiegel Magazine in an article about Alaska permafrost, but thats another story
Re: copper used to be just for PC geeks who overclocked a lot
We took delivery of a 1U Dell server the other day which has a 2.4GHz P4 in it. It had a copper heat sink too - so it's not just for the PC overclocking crowd...Copper is more expensive but it is just better at removing heat. Apple aren't using fans on top of their heatsinks (unlike AMD Athlons) so they can't be that hot yet...
We took delivery of a 1U Dell server the other day which has a 2.4GHz P4 in it. It had a copper heat sink too - so it's not just for the PC overclocking crowd...Copper is more expensive but it is just better at removing heat. Apple aren't using fans on top of their heatsinks (unlike AMD Athlons) so they can't be that hot yet...
Re: Re: copper used to be just for PC geeks who overclocked a lot
Yeah, their fan is to the side, and it's enormous. This is good, however, it can move the same amount of air at slower RPM's, and therefore be quieter and less whiny. Apple has superb case design (not speaking asthetically).
Yeah, their fan is to the side, and it's enormous. This is good, however, it can move the same amount of air at slower RPM's, and therefore be quieter and less whiny. Apple has superb case design (not speaking asthetically).
Re: copper used to be just for PC geeks who overclocked a lot
Way better than the Beige POS I had before...(yes I'm a 'Switcher')
Personally I think they look quite nice in a monolithic sort of way.
Way better than the Beige POS I had before...(yes I'm a 'Switcher')I took a look inside the new dual 1.33 GHz Xserve we got in and it is still using a very low profile (of course, since the unit is only 1u) aluminum heat sink. There is a blower pointed directly into the side of heat sink.
The part that I find interesting is how amazingly quiet the new Xserve is compared to the old one, even though the dual 1.33GHz chips have to give off considerably more heat than the old 1.0GHz parts did.
The old one we had sounded like there were two 800 watt hairdryers fighting inside the case. It was impossible to be near it. I configured the new one beside the old on in the rack, and when I finally cut the power on the old one I thought I had accidently killed the power to both of them. Silence descended. I was stunned to see that the new one was actually running, it just wasn't making any real noise.
So why the new heatsink on the tower? Do the 1.42GHz chips really give off that much more heat than the 1.33GHz chips? Noise shouldn't be an issue either if they mount one of the blowers that they use in the new Xserve.
Maybe they just want the WOW factor that a big shiny copper heatsink delivers.
The part that I find interesting is how amazingly quiet the new Xserve is compared to the old one, even though the dual 1.33GHz chips have to give off considerably more heat than the old 1.0GHz parts did.
The old one we had sounded like there were two 800 watt hairdryers fighting inside the case. It was impossible to be near it. I configured the new one beside the old on in the rack, and when I finally cut the power on the old one I thought I had accidently killed the power to both of them. Silence descended. I was stunned to see that the new one was actually running, it just wasn't making any real noise.
So why the new heatsink on the tower? Do the 1.42GHz chips really give off that much more heat than the 1.33GHz chips? Noise shouldn't be an issue either if they mount one of the blowers that they use in the new Xserve.
Maybe they just want the WOW factor that a big shiny copper heatsink delivers.
Those blowers can move a lot of air efficiently. They may spin up when needed and make some more noise. Also, the 1.42's DO need a lot more cooling. Not only do they generate more heat, but they need to run cooler to be stable because they are being pushed so hard.
fyi, an increase in clock speed alone gives a linier increase in power consumption. An increase in voltage is exponential. For example: something with 1 ohm of resistance will draw 4 watts at 2 volts. At 4 volts it will draw 16 watts. Often increasing voltage slightly (NOT doubling like my example) is a way to get stability at higher clock speeds. But then you get more heat from the higher clock PLUS more heat from increasing the voltage, PLUS less high temperature stability. The end result is needing to keep a hotter chip cooler, hence the massive copper heat piped sink.
Water cooling is NOT "mondo expensive". There are different levels of cooling kits, ranging all the way from under $100 to over/about $300 depending on what else you want to cool.
Still, with a large enough heat sink, and sufficient air flow there is NO reason to water cool a computer. There are even ways to get more effecient cooling by installing TEC (Thermal Electric Cooling) units. Just one example can be found here. I'm sure that there are other examples out there, as well as just the TEC plate itself that can be installed between the processor and heat sink. Just as I am sure that Apple could integrate the controller for such an item onto the motherboard.
The CONSTANT commenting on the 970 is getting VERY old. Apple will do what Apple will do and NOTHING you can say will change that. IF (HUGE IF) Apple decides to go with a 970 (or varient) then they will, and in their own sweet time. Until the next generation processor comes out, DEAL WITH IT and ****.
Hmmm... nobody brought up where to buy the Dual 1.42 Cu heatsink. So does anyone know? After seeing this dude switching his aluminum dual 1.25 heatsink for the 1.42's, I'm tempted to do the same. If only the Cu heatsink's available for purchase.