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Socket A Coolers - That Don't Kill
Mr-Tweak writes: "TweakTown
have just put up their Socket A Cooler guide entitled "Socket
A Coolers - That Don't Kill". In the guide they review and test
out the Global Win FNP50, Global Win FOP32-7K, ATTech CM25 and the
ThermalTake Chrome Orb."
"When Socket A Coolers Attack!"
Why not go to the hardware store and buy an extra fan like that?
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There's a simple reason you don't often see copper heatsinks - copper is a heck of a lot more expensive than aluminum.
Thus, a company that wants to price competitively will design a casing that will allow the larger aluminum heatsink to save a few bucks over using copper.
I imagine that copper or more exotic materials are used pretty often in tight spaces like notebooks tho.
This is just like television, only you can see much further.
If you're worried about a leak damaging your computer, you could always use vegetable oil as your coolant. Heat capacity isn't as good, and you'll have to take off the heat sink assembly and flush it with soapy water every few months, but it's better than air and won't damage electronics if there is a leak.
Many other possible coolants exist; just bear in mind that you don't want your coolant to be very flammable (so something like kerosene is not an option, despite lower viscosity).
True, but I'm looking for specifics. What is the quietest pump with the best throughput, what heatsink lends it self to welding/soldering the easiest, etc..
Geoff
Well, since the subject was posted to slashdot I figured this would be the best time to ask:
I'm interested in doing a few water-cooling projects, mostly for the fun of it. I've seen webpages of people that have used copper sheet and welding to using the end of a PVC pipe. Is there a company out there that is making a commercial-quality water cooled heatsink?
A few points that I believe are important in water-cooling:
* Safety: I don't want my heatsink to spring a leak and fry my system.
* Noise: I want a quiet water pump that isnt much louder than my case fan.
* Size: I don't want to have to invest in a huge pump and radiator that sits outside my case.
* Price: I don't want to have to pay over $150 for the unit..
I am willing to make my own. I'm handy with tools and can usually hack something together correctly given the time.
Any links/ideas/discussion?
I had included an ASCII diagram, but it was rejected as a junk post.
thermal conductivity coefficients:
k [=] W/m deg C
assume 30 deg C
copper (pure) 383
aluminum (pure) 201
so Copper has a value (383 - 201)/383 = 47.5 % higher
>
So there are multiple resistances involved in heat transer:
1. CPU internals to CPU exterior surface (internal) (user cannot influence this)
2. CPU to Thermal Paste (interface)
3. Thermal Paste to Heat sink surface (interface)
4. heat transfer within heat sink metal (internal)
5. heat sink to air (interface)
Assumes:
- the use of thermal paste applied as a uniform thin film.
- constant heat duty - chip has been running long enough to be at steady-state temperature.
The heat transfer at (5) is maximized by having a large relative surface area of metal to air transfer area compared with the area of the heat sink in contact with the heat source. By using forced convection (fan) the heat transfer coefficient is increased.
The main improvement by using copper is that the temprature profile along the length of the fin is more uniform, meaning that the same driving force for heat trasfer is maintained, provided a constant heat duty. This produces a smaller temperature at the CPU-Heat Sink interface.
But the interface resistances are most likely a greater factor in the overall heat trasfer - hence the reason why overclockers wetsand the machined interfaces with 220,400,600 grit paper to minimize surface roughness.
I don't have thermal conductivity values for thermal paste - anyone have a k value?
If you're interested, I can provide an example problem from J.P Holman's Heat Transfer with actual values.
.
Dan's Data, a nice little tech site run by an Aussie with a proper appreciation for IBM keyboards, already had something similar posted back on the 18th. Of course, he also has a page on how to properly destroy your PC.
(If you really want a laugh, read the comics, too.)
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Internet Explorer (n): Another bug -- that is, a feature that can't be turned off -- in Windows.
Are there any materials people out there who can enlighten us?
--Mike--
this is a test of the emergency karma system.
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they'll be available in quantity this month sometime. by far the highest-quality socket-a heatsink you can get. I use the Slot-A Alpha, and I love it. what other heatsink comes unassembled so you can put it together? hey-you build your computer, you should build your heatsink my athlon 1000MHz is at 39 degrees celsius right now. lovely for a GHz processor... get an Alpha. it's worth the $20 you'll pay extra for the slot, and the $10 you'll pay extra for the socket. trust me. nothing's more fun than bolting a heatsink on a $500 processor :)
Yes, we are now testing out the coolers for that brand-new PentiumIV system you've been drooling about!
In our labs, we have just aquired the new Intel-recomended case for these babies, and we love it!
comes complete with an AC unit to remove the extra heat that the heatsink doesnt take care of.
But for what everyones interested in, the coolers themselves.
First up, we have the Thermaltake GOLD orb, made of solid 24k gold, to improve heat transfer, complete with dual 80mm fans to remove the extra heat caused by this hot chip.
Next up, we have the GlobalWin HoT32, sized at a nice 6"x6"x6" package of pure copper, with dual 120mm fans to keep that nasty heat away.
And Last up, we have the Alpha bRN56+, at a slightly smaller 5x5x5 clock of copper, but with what could very well be the more interesting feature, the Solid gold copper inlays, and the built-in pump connectors, making this an ideal candidate to hooking up into your house's AC system for that extra cooling effect.
And now for what everyones been waiting for, how well do these babies cool?
well, time to go take a looksie
Onwards to Page2--->
Stop over-analyzing your analizations
I would rather know which Socket A coolers DO kill. That is potentially much more useful information.
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Do ya feel happy-go-lucky, punk?
Actually I'm glad you brought it up. Processor coolers ARE great for weenies. The fridge packed up last Spring (damn radio shack!) so I had a whole shedload of weenies and nowhere to store them. So what did I do? Heatsinks. I just packed them around the weenies. It was a bit tricky. But the weenies were okay. Main problem was trying to get a heatsink on every side of the weenie. I had to blow on the heatsinks for half an hour, every half hour though, but can't complain, the weenies were preserved.