Sign in with
Sign up | Sign in
Your question

Need extra cooling for my case

Last response: in Systems
Share
October 30, 2009 5:20:45 AM

Hi all,

I just bought my new i7 920 system, OC to 3.6ghz.

idles at 42C and goes close to 76C after running full load at 100% for around 1 hour.

I have a lian li pc-7fw case, thermalright ultra-120 extreme with 2 120mm fans blowing through the heatsink, and the airflow blows directly through the rear case fan to exit in the back.

is there a way to increase airflow INTO the case? i'm open to ANY suggestions to help cool this case. I know 76C isn't too bad, but im sure it doesnt hurt to be too cool right? :) 


thank you

(hope I posted in the right sub-section)

More about : extra cooling case

October 30, 2009 9:57:30 AM

The easiest and fastest to help with your airflow is to replace the stock Lian li 120mm rear exhaust fan with a higher CFM fan. Going from the current 56 CFM to 100+ CFM should help. It'll be a bit noisier though. Replacing the 140mm fan is also possible, but there are not as many options that would improve your CFM much for intake and they're not LEDs.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Replacing the quiet fans on the Ultra with higher CFM fans would also help.
m
0
l
October 30, 2009 3:30:22 PM

Personally, I prefer changing the bigger fans because I find their noise less annoying, but since the difference between 120mm and 140mm isn't that big, I don't think it would make much of a difference.

Just as a reference, the front fan is this: 900RPM, ~28dBa and ~60CFM. As dirtmountain said, 140mm case fans aren't the most common, but I was able to find a few that could give more CFM:
  • Lian-Li CF-1412A: 1200RPM, ~28dBa and ~73CFM
  • Evercool EC14025L12EA: 1200RPM, ~22dBa and ~68CFM
  • Koolance FAN-14025HBK: 1700RPM, ~36dBa and ~91CFM
  • Aerocool Silent White 140mm: 1500RPM, ~32dBa and ~73CFM
    m
    0
    l
    Related resources
    October 31, 2009 3:09:39 AM

    thank you for the replies!
    I went to buy giled extreme thermal compound yesterday and got so freaking annoyed at the silly heatsink fans that kept falling out.

    anyway, I have dropped my idle temp by 1-2C which isn't anything to scream about. Max load temps still immediately shoot up to 65, then slowly rise every few mins.

    I may have to pull back my overclock. Whats the average idle and max load temp of the i7 920 without overclocking?
    m
    0
    l
    October 31, 2009 3:54:58 AM

    look for yate loon 120mm fans. they have very high CFMs (88 CFM) for a very cheap price.

    www.jab-tech.com sells them for 3.5 bucks each
    m
    0
    l
    October 31, 2009 3:56:23 AM

    xbonez said:
    look for yate loon 120mm fans. they have very high CFMs (88 CFM) for a very cheap price.


    ^Agreed, also if you really care about improving airflow, just a case with more intake fans and exhaust fans. Is your heatsink in a push-pull config?
    m
    0
    l
    October 31, 2009 4:22:14 AM

    yes this is a push pull config with 2 fans, blowing directly to my exhaust fan in the back.

    I am going to try putting it back to stock speed, and see how my temp goes. I am worried cus it hits 70C so easily at 3.6ghz :( 
    m
    0
    l
    October 31, 2009 4:28:09 AM

    skywalk said:
    yes this is a push pull config with 2 fans, blowing directly to my exhaust fan in the back.

    I am going to try putting it back to stock speed, and see how my temp goes. I am worried cus it hits 70C so easily at 3.6ghz :( 


    There's nothing to worry about at 70C..are you using prime95 to get this temperature, or is it during games?

    I made a mistake above, I meant just "get" a case with more intake fans and exhaust fans
    m
    0
    l
    October 31, 2009 5:22:00 AM

    yesm im using prime95. Handbrake also hits 100% load on all cores, for about 50mins during encoding. much better than my old AMD, which took 6hours!

    I'm back to stock speed, and it idles at 38-40, and peaks at 58-62C. much better temperatures.

    so hitting 70+C is no big deal? I read a few places that said this will damage my chip in the long run
    m
    0
    l
    December 25, 2009 8:13:30 PM

    I would have to say The best spec'd fan I could find was.


    Koolance FAN-14025HBK 140mm Case Fan
    FAN-14025HBK
    Dimensions: 140x140x25mm

    Type: Dual Ball-Bearing
    Connector: 3-pin (2-wire)
    Rated Voltage: 12VDC
    Current: 0.20A
    Speed: 1700RPM (max)
    Static Pressure: 1.9mm-H2O
    Airflow: 91.2CFM (max)
    Noise: 36.3dBA (max)
    If you have more questions I am at http://www.CoolTechSpot.com Currently awaiting my Corsair Hydro h50 to put in my new NZXT Tempest. I am looking at upgrading the fans when I have the funds.
    m
    0
    l
    !