choosing a good fan case

**janouelle** · 08-29-2009, 02:14 AM

hello
when i first build my system i made sure to get a good fans for the case and after looking arround i found that "noctua" was the best as i know
so i got 4 noctua "nf-p12" as i know we should be looking on the airflow, speed and noise but never had idea about the "airpressure" and just now i was looking on coolermater website and i found the following fan
it's called (R4-L2R-20CR-GP)
so my question is
noctua fan cost me 30$ each cooler master fan it's new and it will cost no more than 15$

Specifications for noctua that im using
Airflow 92,3 m³/h or 54.33 CFM
Rotational Speed 1300 RPM
Static Pressure 1,68 mmH2O

cooler master specs
Airflow 152.91 m³/h or 90CFM
Speed 2000 RPM
Air Pressure 3.04 mm H2O

both of them 12*12*2.5 cm and silent and as i know that Coolermaster got better airflow then Noctua in the above fans now with the airpressure, wich is better? as i have no idea how it works; less airpressure is better or more airpressure? all fans will be used to take out the hot air.
10x in advance

**pat mcgroin** · 08-29-2009, 07:46 AM

Im not sure that I can answer your question as to whether the different air pressure and or vacumn created by the fan will be a factor in their ability to cool. I would think that it would depend on the overall ability of the case to breathe as to what pressure could build.
I have always been of the opinion that more airflow is better. In your last sentence you state that all fans will face outward. You will need at least one to blow air in or you will greatly reduce the ability to exchange all of the air inside of the case.

I have been using some of these fans for the last few years with nothing but love for them.
The 2 things I like the best are the ability to change the fan speed when I want and the fact that the adjustments are quality.
Ive seen many other fans that when you turn the knob and nothing happens.

http://www.newegg.com/Product/Produc...me=Silverstone

EDIT: I missed that you are in AU but I think a quick search will find these fans in your area.

Tumbleweed36 · 08-29-2009, 08:08 AM

Let me throw another contender in the mix. I use only the Antec Tri-Cool fans in my cases. They are very quiet, have a 3 speed switch so you can set them to meet your needs (low, med, high) and you can get them with LED lights in them. I just don't buy anything else anymore than these and they are reasonably priced.

Case Cooling:

Suggested Fan Placement and Cooling

CPU/Heatsink fan blowing down on heatsink

Fan in front of case pulling in cool air

Fan in rear of case pulling hot air out of the case and blowing out the back

Fan on top pulling warm air out of the case (heat rises)

Most instances, side case fans pulling cool air into the case with the exception of any very near the top of the case to take advantage of the hot air rises scenario.

Smooth air flow front to back in case

Other Considerations:

Move ribbon cables out of the air flow area if possible

Suggest round IDE cables for best air flow

Post back with questions/concerns.

08-29-2009, 02:14 AM	#1 (permalink)
janouelle Registered User Join Date: Jan 2009 Location: Sydney Posts: 53 OS: Win Vista Ultimate SP2 x64 My System	choosing a good fan case hello when i first build my system i made sure to get a good fans for the case and after looking arround i found that "noctua" was the best as i know so i got 4 noctua "nf-p12" as i know we should be looking on the airflow, speed and noise but never had idea about the "airpressure" and just now i was looking on coolermater website and i found the following fan it's called (R4-L2R-20CR-GP) so my question is noctua fan cost me 30$ each cooler master fan it's new and it will cost no more than 15$ Specifications for noctua that im using Airflow 92,3 m³/h or 54.33 CFM Rotational Speed 1300 RPM Static Pressure 1,68 mmH2O cooler master specs Airflow 152.91 m³/h or 90CFM Speed 2000 RPM Air Pressure 3.04 mm H2O both of them 12122.5 cm and silent and as i know that Coolermaster got better airflow then Noctua in the above fans now with the airpressure, wich is better? as i have no idea how it works; less airpressure is better or more airpressure? all fans will be used to take out the hot air. 10x in advance Last edited by janouelle; 08-29-2009 at 02:22 AM.

08-29-2009, 07:46 AM	#2 (permalink)
pat mcgroin TSF Enthusiast Join Date: May 2009 Location: Toledo Oh. Posts: 603 OS: XP Professional SP2 Vista Ultimate SP2	Re: choosing a good fan case Im not sure that I can answer your question as to whether the different air pressure and or vacumn created by the fan will be a factor in their ability to cool. I would think that it would depend on the overall ability of the case to breathe as to what pressure could build. I have always been of the opinion that more airflow is better. In your last sentence you state that all fans will face outward. You will need at least one to blow air in or you will greatly reduce the ability to exchange all of the air inside of the case. I have been using some of these fans for the last few years with nothing but love for them. The 2 things I like the best are the ability to change the fan speed when I want and the fact that the adjustments are quality. Ive seen many other fans that when you turn the knob and nothing happens. http://www.newegg.com/Product/Produc...me=Silverstone EDIT: I missed that you are in AU but I think a quick search will find these fans in your area. Last edited by pat mcgroin; 08-29-2009 at 07:48 AM.

08-29-2009, 08:08 AM	#3 (permalink)
Tumbleweed36 Asst Manager Hardware Join Date: May 2005 Location: USA Posts: 19,658 OS: XP Professional	Re: choosing a good fan case Let me throw another contender in the mix. I use only the Antec Tri-Cool fans in my cases. They are very quiet, have a 3 speed switch so you can set them to meet your needs (low, med, high) and you can get them with LED lights in them. I just don't buy anything else anymore than these and they are reasonably priced. Case Cooling: Suggested Fan Placement and Cooling CPU/Heatsink fan blowing down on heatsink Fan in front of case pulling in cool air Fan in rear of case pulling hot air out of the case and blowing out the back Fan on top pulling warm air out of the case (heat rises) Most instances, side case fans pulling cool air into the case with the exception of any very near the top of the case to take advantage of the hot air rises scenario. Smooth air flow front to back in case Other Considerations: Move ribbon cables out of the air flow area if possible Suggest round IDE cables for best air flow Post back with questions/concerns. __________________ ---------- I don't receive email notifications of replies to subscribed threads. (Internet provider policy) Therefore, if I don't respond to your post within 24 hours, please send me a reminder PM and include the link to your thread.