1. Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

Which radiator must be large enough to be used without fans?

Discussion in 'Overclocking & Cooling' started by Animalpak, Sep 26, 2012.

  1. Animalpak

    Animalpak

    Joined:
    Feb 8, 2008
    Messages:
    2,174 (0.86/day)
    Thanks Received:
    627
    Location:
    Switzerland
    I want to make my setup dead silent... :cool:

    My case is the raven RV 02 can i mount a 2x180mm radiator or 3x180mm on the bottom without fans ?

    Since the dissipation area is practically very huge, overclocking the CPU and stock GPU block (in the future) should be fairly... Or not ?

    The Rad
    [​IMG]




    What you guys think ?
     
    Last edited: Aug 4, 2013
  2. cdawall where the hell are my stars

    Joined:
    Jul 23, 2006
    Messages:
    20,684 (6.71/day)
    Thanks Received:
    2,984
    Location:
    some AF base
    Low watt parts for sure no issues. A high-end overclocked cpu and high-end gpu temps would be tks high for my comfort. My loop kept under low temps with 2 near silent fans on a normal 4x120+3x120+2x120s.
     
    Animalpak says thanks.
  3. eidairaman1

    eidairaman1

    Joined:
    Jul 2, 2007
    Messages:
    13,685 (5.00/day)
    Thanks Received:
    1,872
    you fail to realize cooling fans provide cool and fresh air to all components in the machine, if your VRMs and PCB arent cooled it can cause the CPU to not operate right, plus what about your video cards, ram, HDD/SSD, PSU, and all other VRMs on those components?
     
    Last edited: Sep 26, 2012
    Animalpak says thanks.
  4. erocker

    erocker Super Moderator Staff Member

    Joined:
    Jul 19, 2006
    Messages:
    39,977 (12.96/day)
    Thanks Received:
    14,401
    Use low speed fans. You'll want some airflow.
     
    Animalpak and eidairaman1 say thanks.
  5. lilhasselhoffer

    lilhasselhoffer

    Joined:
    Apr 2, 2011
    Messages:
    1,681 (1.23/day)
    Thanks Received:
    1,040
    Location:
    East Coast, USA
    I'm missing it.

    You've got a PSU, with a fan presumably.
    You've got a trio of fans on the bottom of the case.
    You've got, what appears to be, a pair of fans on a graphics card.

    How is this "Dead silent?" If you've already got so many fans why not a couple more low speed/noise fans?
     
  6. eidairaman1

    eidairaman1

    Joined:
    Jul 2, 2007
    Messages:
    13,685 (5.00/day)
    Thanks Received:
    1,872
    those turbine/turbofan style at the bottom must be noisy at points of time (Turbo Fan designs were never silent)
     
  7. Animalpak

    Animalpak

    Joined:
    Feb 8, 2008
    Messages:
    2,174 (0.86/day)
    Thanks Received:
    627
    Location:
    Switzerland
    Nice !

    Are your components overclocked ?





    True im worried about the VRMs and the motherboard like chipset...

    I can use just the last fan that 180mm active then mount a 2x180mm rad without fans.

    1x180mm active plus on the top some Noctua fan and the rest fanless, maybe my HDD needs active cooling.





    Already did, but i still hear somethiing...



    The PSU must have a fan. Im not gonna buy a fanless PSU they are not reliable in my opinion and with low watts.

    The trio fans are Silverstone Air penetrator, on low speed they are silent but on high... No way !

    I did not write that it is dead silent ... I wrote that i want to do dead silent setup.







    Yes they are noisy at low speed too ( for me ).


    What about this ?

    [​IMG]


    Im sure with this... You dont need any fan even OC, CPU and GPU.
     
  8. erocker

    erocker Super Moderator Staff Member

    Joined:
    Jul 19, 2006
    Messages:
    39,977 (12.96/day)
    Thanks Received:
    14,401
    Okay, even if you use a large radiator with no fans where is the heat going to go? A radiator radiates heat, the fans blow the heat away. There are quite a few fans on the market that are low speed and very quiet.
     
  9. eidairaman1

    eidairaman1

    Joined:
    Jul 2, 2007
    Messages:
    13,685 (5.00/day)
    Thanks Received:
    1,872
    how much is one of those versus a Heater core?

    What Im saying is those fans in the case provide a Negative pressure which almost eliminates any hot spots in the case.



     
  10. phanbuey

    phanbuey

    Joined:
    Nov 13, 2007
    Messages:
    5,215 (2.00/day)
    Thanks Received:
    984
    Location:
    Miami
    it cant be a radiator... it basically has to be a gigantic reservoir with heatsinks on it... you can always throw a rad in there but if your'e going totally fanless more water=better... if you can hook it up to your pool even better.

    Like so:
    [​IMG]
     
  11. Sinzia

    Joined:
    Oct 5, 2010
    Messages:
    858 (0.55/day)
    Thanks Received:
    216
  12. radrok

    radrok

    Joined:
    Oct 26, 2011
    Messages:
    2,990 (2.58/day)
    Thanks Received:
    803
    Location:
    Italy
    Get a MO-RA3 with some 500rpm fans, I have one and it is dead silent even with 9x AP15s at 1850 rpm.
     
  13. eidairaman1

    eidairaman1

    Joined:
    Jul 2, 2007
    Messages:
    13,685 (5.00/day)
    Thanks Received:
    1,872
    that right there was the cool concept- drawback though is being as tall as it is- easy to knock over and damage fins or even cause leaks to occur- (needs to be anchored to floor/ Table or case itself)
     
  14. radrok

    radrok

    Joined:
    Oct 26, 2011
    Messages:
    2,990 (2.58/day)
    Thanks Received:
    803
    Location:
    Italy
  15. eidairaman1

    eidairaman1

    Joined:
    Jul 2, 2007
    Messages:
    13,685 (5.00/day)
    Thanks Received:
    1,872
  16. radrok

    radrok

    Joined:
    Oct 26, 2011
    Messages:
    2,990 (2.58/day)
    Thanks Received:
    803
    Location:
    Italy
    Heh indeed man but it looks cool :D
     
  17. Jetster

    Jetster

    Joined:
    Jan 17, 2010
    Messages:
    5,399 (2.99/day)
    Thanks Received:
    2,250
    Location:
    Oregon
    Just put it outside.
     
  18. TRWOV

    TRWOV

    Joined:
    Aug 11, 2011
    Messages:
    3,787 (3.06/day)
    Thanks Received:
    2,399
    Location:
    Mexico
    Put the PC in another room and run the cables to your desk. Most motherboards have options to turn on with the keyboard.
     
    Crunching for Team TPU
  19. m1dg3t

    m1dg3t

    Joined:
    May 22, 2010
    Messages:
    2,247 (1.34/day)
    Thanks Received:
    513
    Location:
    Canada
    Natural convection ;)

    To the OP: If you seriously want fanless you're going to need something like the MORA or similar, or better yet 2 of them! :rockout:

    Big RADs/lots of RADs with SLOOOOOOW moving fans is the way to go IMO. The expensive fans ARE worth the $$$ :toast:
     
  20. TRWOV

    TRWOV

    Joined:
    Aug 11, 2011
    Messages:
    3,787 (3.06/day)
    Thanks Received:
    2,399
    Location:
    Mexico
    Crunching for Team TPU
  21. lilhasselhoffer

    lilhasselhoffer

    Joined:
    Apr 2, 2011
    Messages:
    1,681 (1.23/day)
    Thanks Received:
    1,040
    Location:
    East Coast, USA
    There are two cooling options. The first is to have a huge cooling area, and assume that the pump generates no noise... The problem is that you're looking at a 70+C source, and ambient temperatures in the 20s. A 50 degree difference means that all the energy needs to be dissipated by radiation and the small amount of convection caused by the heat differential. To put this in perspective, it's like turning on a hotplate to low, and leaving it on constantly.

    That kind of heat differential will require huge amounts of surface area, that will likely be the size of most cases.


    The second option is to have a huge amount of fluid. As others have stated, it takes a lot of energy to change waters temperature. The more water, the more energy. A gigantic reservoir will dramatically influence the amount of energy the system can absorb without appreciable heating.




    Sorry, long winded. Short version, no this radiator is not big enough alone. If you'd like any kind of reasonable assurance then get a giant reservoir to go with that huge radiator. The simplest, cheapest, and least error prone solution is still a fan though. Given the other fans, the question is more of "why not" than anything else.
     
    Animalpak says thanks.
  22. cdawall where the hell are my stars

    Joined:
    Jul 23, 2006
    Messages:
    20,684 (6.71/day)
    Thanks Received:
    2,984
    Location:
    some AF base
    It only had the CPU and an 8400GS on it. Room temp was around 17C temps were within reason, but they were yate loon high speeds with PWM cranking them down to near silence (PSU fan was louder).

    For you I would look at a pair of nice quite 180MM fans run two of them on a 3X180mm radiator and run the XSPC 120MM radiator you currently have with a low speed 120MM fan. That could have you down in temp's to something comfortable and more or less silent.

    Way to look at fans...

    These would be the parts to look at if I were you.

    2x 17dba 180mm fan

    SILVERSTONE FM181 180mm Case Fan

    3x180mm rad

    http://www.performance-pcs.com/cata...=32880&zenid=5a6828e24125686dd03bd7f43989fdef

    silent 120mm (8dba)

    Enermax T.B.SILENCE 120mm PWM Twister Fan
     
    Last edited: Sep 27, 2012
  23. de.das.dude

    de.das.dude Pro Indian Modder

    Joined:
    Jun 13, 2010
    Messages:
    7,924 (4.77/day)
    Thanks Received:
    2,122
    get a car radiator, mount it outside the house. and you have passive cooling :p

    *only works for cold countries with a mild breeze.
     
    Jetster says thanks.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guest)

Share This Page