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View Poll Results: What are your most concern?

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  • Thermal performance

    7 77.78%
  • Flow Rate

    2 22.22%
  • Pressure Drop

    1 11.11%
  • Low Fan Noise

    2 22.22%
  • All the above

    2 22.22%
Multiple Choice Poll.
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Thread: Water Cooling Poll

  1. #1
    OC Jedi Master

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    Default Water Cooling Poll

    Fellows, you're know we just recruited another watercooling "nut", right Skyguy?

    If you don't know who I was reffering to, that's Hesmelaugh (Shane). I don't know if you are all know it or not. To conduct a throughly water cooling testing consuming a lot of times and equipment cost. A good commercial flow and pressure meter cost over $200-$300, unless we have sponsors or we can't afford to have all the equipment to do all the flow rate or pressure drop test. I don't own one but Shane only owns flow meter.

    So, we're taking a survey to find out what the most concern area and interest to you if you are a water cooling user.

  2. The following user thanks Deton For this above post:

    HESmelaugh (08-12-2008)

  3. #2
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    Great poll, Deton! Can't wait to see some results.

    Maybe you could add "Low noise (Silence)" to the list?
    For me, low noise is the greatest benefit in watercooling. I can have low noise, great temperatures and good performance. With air cooling, that's very difficult to achieve.
    I've been looking for a decent instrument to measure noise levels (it would have to be one than can measure very low volumes of noise).

    That would be a great tool for testing Fans, Pumps and other hardware for noise.

  4. #3
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    Default

    Shane, done!

  5. #4
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    Default

    It's all about performance baby!

  6. #5
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    Default

    Right! I voted in such order:

    1. thermal performance ( well thats whats it all about isnt it)
    2. low fan noise ( well if anyone had high end ATI card then YOU KNOW)
    3. Flow rate ( that is inclined to the two above. Without good flow rate theres less thermal performance and you need high flow fans)

    but im not too surehow the pressure drop affects the preformance TBH.... NOOB

    Edit: ok 2nd thoughts now: if pressure drop is lower ( which means the system can keep even pressure ) then its better flow rate and that improves performance.... am I right??
    Last edited by Geralt; 09-12-2008 at 15:59.

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  7. #6
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    Default

    Well, correct me if I'm wrong, guys but here are my thoughts on pressure drop:

    For all practical purpouses, measuring pressure drop gives an indication of how restrictive a component is. A component with a large pressure drop is restrictive. It will reduce flow in your system significantly.

    It seems to me that while pressure drop tests give more precise results, you can get the same basic information by measuring flow rates. (Comparing flow rates with and without the block in the loop.)

  8. #7
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    Default

    Quote Originally Posted by HESmelaugh View Post
    Well, correct me if I'm wrong, guys but here are my thoughts on pressure drop:

    For all practical purpouses, measuring pressure drop gives an indication of how restrictive a component is. A component with a large pressure drop is restrictive. It will reduce flow in your system significantly.

    It seems to me that while pressure drop tests give more precise results, you can get the same basic information by measuring flow rates. (Comparing flow rates with and without the block in the loop.)

    Yup thats what i wanted to say but thats common sence in my case ( i never was good at physics but it makes sense)

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  9. #8
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    Default

    Quote Originally Posted by HESmelaugh View Post
    Well, correct me if I'm wrong, guys but here are my thoughts on pressure drop:

    For all practical purpouses, measuring pressure drop gives an indication of how restrictive a component is. A component with a large pressure drop is restrictive. It will reduce flow in your system significantly.

    It seems to me that while pressure drop tests give more precise results, you can get the same basic information by measuring flow rates. (Comparing flow rates with and without the block in the loop.)
    your theory are right.

    That is why I have this poll to save the money on the un-necessary testing equipment.
    As I predicted, most people cares more how the thermal performance than the raw data (flow rate/pressure drop). So I don't think you need to purchase the Namometer , it's nice to have all the gadget but you will go broke.

  10. #9
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    Default

    Watercooling noob here and just as when I bought Deltas for air tests my first concern is thermal performance then later when my ears hurt I'm looking for quieter.

    Tests for me need the following info:

    a simple pump only test rig with a Vario in it and a flowrate meter....Then with the no restriction flowrate known each new item tested can register a flowrate figure (frankly the unit used to measure is less important provided that the meter is linear.

    Again with a same pump setup at varying flowrates if you want I would test rads using a heatload say in a resevoir (something like an aquarium heater or two) and measure water in and water out temps at a given ambient and always the same fans at say 1000, 1600 and 2200 rpm

    For testing blocks....I have been wondering if it is possible to build a TEC heatsource or similar

    Musings from a backyard inventor...I'll go vote performance now
    Last edited by grumpydaddy; 09-12-2008 at 17:02. Reason: add
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  11. #10
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    Grumpy, yeah you can use aquarium heaters to heat up the water to do radiator heat disipation test but this will take a little bit time to bring the temperature of the water up equal 300w of heat thought. You will be sitting waiting for a long time

    TEC will work but you have to worry about not to kill (burn out) the module.

  12. #11
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    I was thinking about building a heater at some point too. But I decided against it for two reasons:
    1. I read about too many people who built one or tried to build one and had trouble with it (couldn't get it to work, stopped working/got damaged, whatever).
    2. I asked in one of the forums I visit and most people said they would rather see "real world" results with an actual CPU than results from a simulated CPU.

    The thing with the aquarium heaters for testing radiators is something I want to try too. Probably takes more than an hour of heating for each test run but what the heck. I don't have to sit there and watch, while the water is heating up.

  13. #12
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    I care more about flow rate and pressure drop relationship, as either one DIRECTLY affects thermal performances. if one component is restrictive against the flow, it directly lowers the flow rate and pressure.

    thats why I care more about pressure drop and the relationship it has with flow rate.
    and Damn Proud of it!

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