what is the recommended CFM for a 120x1 Radiator?

[abhong]

i have the HWLabs Black Ice GTX 120 radiator and one thing i notice/like with this is that it has a higher density of fins compared to other radiators.

i have a bunch of stock 120x25mm fans but i was wondering, how much CFM should i be passing through this radiator?

i am only doing a CPU loop at the moment.

thanks

 

[montypythizzle]

Try a Thermaltake Thunderblade.

 

[Raider1284]

well that radiator you got is supposed to be the quiet version.
"Achieves Black Ice® Xtreme level performance in stealth mode (low-noise/low-airflow conditions)."

makes me think your radiator doesnt require as much cfm as others would. Its really up to you how much CFM, the more powerful the fan the louder it is, but should cool better. As opposed to a quiet fan, but doesnt cool as well.

 

[abhong]

thanks!

second question...

ideally, the fan would blow air through the radiator... but due to space constraints and certain personality disorders of mine... i want to mount it like this pic here...

Pic

this means that the air will be pulled through...

i know this is not ideal, hence the CFM question... perhaps increasing the CFM from a standard case supplied 30ish CFM to a more performance 70-80+ CFM fan would compensate for this?

 

[Rike]

Pulling the air though the rad will not work as well as pushing it through, but that doesn't mean it won't work. If you are set on having it pull, you should think about using something as a gasket between the rad and fan to make sure the fan will, as much as possible, pull the air through the rad rather than pulling air in from the sides.

For a higher CFM fan, you could think about a high speed Yate Loon or a high speed Scythe.

 

[terentenet]

I have mine set in a pull configuration and it works perfectly. Also, I use similar rads (BIX I and II). You will notice that higher density of fins means higher airflow restriction. Low noise might be good for you, give it a try.
Ultimately, you might want high CFM fans. I had mine set with low noise Noctua's for a couple of days. Switching to high CFM fans (80CFM+) accounted for temperature drops in excess of 10 celsius.

 

[Billb2]

Fans move air by creating pressure differentials. As far as the fan is concerned, push is the same as pull. There are no diffrerences between temps with either setup. That being said, without a shroud, in the push configuration, cooling can be hampered due to a dead spot behind the motor which can lead to differing airflows in the center as compared to the edges of the fans output. That's why shrouds are used. While this dead spot is much less of a problem with a pull configuration, a shroud will also help there too.

As to the OP's question:
Higher CFMs through any rad yields better cooling. But rads with wider fin spacings benefit more from higher CFM fans than do rads with close fin spacings. With close fin spaced rads it's just to difficult to get high CFMs through them.
http://www.thermochill.com/PATesting/
and
http://www.xtremesystems.org/f...showthread.php?t=77260
http://forums.procooling.com/v...ighlight=how+to+choose
http://www.xtremesystems.org/f...howthread.php?t=137832
http://www.silentpcreview.com/article739-page1.html