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Thread: Minimum Cooling

  1. #1
    clocker's Avatar Shovel Ready
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    Recently I began work on two servers for my brother.
    Progress has come to a standstill because he is in China for two weeks, so I decided to do a little theoretical testing on Sprocket to keep myself occupied.

    These servers will be operational 24/7 and, unlike Sprocket ( or your PCs too, I suspect), they will not be lovingly monitored and cared for.
    Ruggedness and simplicity is the name of the game here and I'm trying to keep the cooling as minimal as possible- the fewer fans, the smaller the chance of failure and the less maintenance to perform.

    Accordingly, I decided to see just how barebones I could make Sprocket and still maintain a reasonable cooling level.
    My target was to keep full load temps under 50c.

    We are seriously considering watercooling these servers as water offers not only a good cooling solution but also excellent noise reduction capabilities.
    With twin Raptors in each unit there will be a lot of heat AND noise to contend with.
    I have seen several methods of constructing water jackets for HDDs that I could easily make.

    However, I have yet to watercool Sprocket's HDD, so just for a simple test I needed to add more heatload to my current waterloop. I have previously tried a waterblock on my northbridge, but I'm unconvinced that the bridge really gets very hot, so this time I decided to try the video card...a proven heat source.

    It was pretty simple to attach the stock Thermaltake waterblock to the card and although the fittings were awkward ( I'd prolly change them were I to keep this setup, if not just get a purpose-built video block altogether), the loop was functional.

    Prior to fitting the waterblock I was using a Zalman northbridge HS ( tall blue aluminum one) with a 120mm side intake fan to deal with the video card.
    Temps were in the range of 28-30c with that setup.

    Now I am aware that this is not a very accurate test of what the servers will be like...the Raptors are likely to put out a great deal more heat than my 9600XT card does, but then again, we won't be using a POS AquariusII water kit either and I was just trying out a concept here.

    Last night was the first test.
    I removed ALL the case fans.
    The only fan ( excluding the PSU, which has two) is a 92mm working as exhaust on the radiator.
    My CPU is slightly overclocked ( 210x 10.5) and also slightly undervolted ( 1.55v vs. stock 1.65v).
    I ran Folding@Home to load the CPU.
    Room ambient was in the 70's ( we are experiencing a heat wave here).
    Here's what happened....

    As you can see the delta v between the case (motherboard) temp and the CPU stayed consistent at around 22c and the CPU stayed below 50c.
    The video card was at 36c when I checked this AM.

    All in all, not too bad.
    My next step is to prototype a HDD cooler and try that out.
    That project could take a while, but I'll keep you posted.
    "I am the one who knocks."- Heisenberg

  2. Software & Hardware   -   #2
    tesco's Avatar woowoo
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    So your trying to simulate what temps the two raptors will give you if you water cool your brother's servers? using a 9600xt.


  3. Software & Hardware   -   #3
    Virtualbody1234's Avatar Forum Star BT Rep: +2
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    I think you are looking at this in a way too complicated way. Just use a good CPU cooler and install good case ventilation. One 92mm exhaust fan or even 120mm if you really want. Let them run a little hotter than Sprocket and let them be.

  4. Software & Hardware   -   #4
    lynx's Avatar .
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    I tend to agree with VB.

    As you say, simplicity is what you are after. Water cooling is certainly not that.

    Raptors are designed for high performance 24/7 running, you shouldn't need any special cooling for them either.

    Far better (and cheaper) to go for high quality fans such as Panaflo or Papst, IMO.
    .
    Political correctness is based on the principle that it's possible to pick up a turd by the clean end.

  5. Software & Hardware   -   #5
    clocker's Avatar Shovel Ready
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    Oh hell, you guys are no fun at all.

    It would be boring to just throw a couple of fans in there and kick it out the door.
    "I am the one who knocks."- Heisenberg

  6. Software & Hardware   -   #6
    Storm's Avatar Poster BT Rep: +3
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    Originally posted by clocker@14 July 2004 - 03:16
    Oh hell, you guys are no fun at all.

    It would be boring to just throw a couple of fans in there and kick it out the door.
    then i vote you get 3 oempa-loempa's to wave your computer cool with a palmtree-leaf
    great FTP site for awesome quality video clips
    yeah, you have to sign up, but its worth it

  7. Software & Hardware   -   #7
    tesco's Avatar woowoo
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    Originally posted by Storm+13 July 2004 - 21:29--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Storm @ 13 July 2004 - 21:29)</td></tr><tr><td id='QUOTE'> <!--QuoteBegin-clocker@14 July 2004 - 03:16
    Oh hell, you guys are no fun at all.

    It would be boring to just throw a couple of fans in there and kick it out the door.
    then i vote you get 3 oempa-loempa&#39;s to wave your computer cool with a palmtree-leaf [/b][/quote]

  8. Software & Hardware   -   #8
    clocker's Avatar Shovel Ready
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    An option I had not considered....hmmmm.
    "I am the one who knocks."- Heisenberg

  9. Software & Hardware   -   #9
    lynx's Avatar .
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    Ati X800 is total crap.


























    That should bring along a few fanboys if you want to consider manual labour.
    .
    Political correctness is based on the principle that it's possible to pick up a turd by the clean end.

  10. Software & Hardware   -   #10
    tesco's Avatar woowoo
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    Originally posted by lynx@14 July 2004 - 03:44
    Ati X800 is total crap.


























    That should bring along a few fanboys if you want to consider manual labour.
    The biggest fanboy (adamp2p) hasn&#39;t been around in a long time...

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