DIGIT-ARC read-only archive · snapshot: July 23, 2026
Revolution
Revolution Original post #1
Oct 1, 2012 at 11:13 AM
Hi,
please help me set up case fans!
I have Zebronics Bijli(old one) Case.
What is best possible way for cooling ?
I have Corsair PSu mounted at top and sucking air from the inside of the case.
Got Intel Stalk Cooler.
Should I connect fan to mobo(3pin) or 4pin moles(PSU) ?
Which will cause more air flow ?
sukesh1090
Oct 1, 2012 at 7:13 PM
bijli will be already having a front fan so place a high CFM fan at the back as exhaust and intake fan in the sides.this should be more than enough.
Revolution
Oct 3, 2012 at 6:15 PM
Thanks for reply!
How high CFM ?
90CFM at rear exhaust ?
Then 40CFM(Intake) - 90CFM 120mm fan+80CFM PSU fan(as exhaust)= -130CFM(negative air pressure)
Is it good ?
Though PSU and rear fan(if 3pin) will not run at full speed.
Then might be 10CFM negative ?
I guess it will enough for cooling without no OC.
sukesh1090
Oct 3, 2012 at 9:44 PM
^^
90 CFM intake at front and 45 CFM intake at side.90 CFM at rear as exhaust(connect it to PSu 4 pin,let it run at full speed) and your PSU fan as exhaust this should do well as nearly balanced airflow.or do one thing Connect that 90 CFM front fan to mobo 3 pin,so that it doesn't sucks in unwanted dust on idle. :)
Revolution
Oct 4, 2012 at 10:49 AM
I'm afraid to install ant side intake fan cos of dust.
There are two 80mm fans but I'm not using them.
Bijli case has no place for 120mm fan at left side.
d6bmg
d6bmg #6
Oct 4, 2012 at 5:00 PM
^^ If you are afraid of dust, use dust filters.
Revolution
Oct 5, 2012 at 7:25 AM
I want make filter myself.
But,could not find Dryer Sheet any where.
Would u like to share any Tutorial link ?
d6bmg
d6bmg #8
Oct 6, 2012 at 9:25 PM
Use mosquito net and double sided tape (3M will do)
Revolution
Oct 7, 2012 at 6:33 AM
We don't have cotton mosquito net only nylon.
BTW,Dryer Sheet will work as cotton mosquito net ?
d6bmg
d6bmg #10
Oct 7, 2012 at 8:18 PM
What do you mean by dryer sheet? There are many kind of dryer sheet available and being used in my home. So need a but more explanation.
Revolution
Oct 8, 2012 at 7:08 AM
Even I did not knew there are many kind.
Saw while googling about DIY dust filter.
The Incinerator
Oct 8, 2012 at 1:46 PM
^^ Get an airconditioner's dust filter cut it accordingly and use.
Revolution
Oct 8, 2012 at 5:42 PM
Are those cheap ?
The Incinerator
Oct 8, 2012 at 10:17 PM
Yes,if you get them from the right place in your city. Hitachi Daikin and Mitsubishi kind works best.
aloodum
aloodum #15
Oct 9, 2012 at 12:51 AM
^^^ +1 to the aircon dust filter option !

At revolution: The bijlee has a pathetic front fan. AND IIRC the HDD's sit just behind the fan. While it does wonders for the HDD cooling, on a hot day , with multiple HDDs, the air ultimately reaching your mobo is somewhat warm.It becomes imperative that you atleast have the top 80 mm fan with a decent fan , coupled with a decent front intake and again a high cfm exhaust fan.
The trick here is we are pumping as much cooler air + the draw from the front ventilated fascia, The hot rising air would be sucked more by the exhaust, leaving the psu to draw cooler air from the top section draft, ie the top dvd bays, over the rams and onto fan.
CPU airflow can be either negative pressure(more exhaust) or positive in our case(more into pumping).Thermaltake has few nice docs on the same and they recommend a positive flow.
Regarding the choice of 3pin vs the 4 pin molex option, the 4 pin molex will allow the fan to rotat with highest rpm, regadless of internal temps/sensor readings. 3 pin on the other hand are TC controlled and PWM-ed.
Some high end mobos allow even PWM ed fans to run at 100% via bios.A PWM trades some perfo for a lower noise.At the end of the day its your call.
Revolution
Oct 9, 2012 at 8:33 AM
Thanks for ur reply guys!
Now,I need to find local place and price for AC filters.
d6bmg
d6bmg #17
Oct 9, 2012 at 8:12 PM
^^ Get an airconditioner's dust filter cut it accordingly and use.

This is a new idea!! Would be interesting to see the picture of a PC using them.
Revolution
Oct 10, 2012 at 8:34 PM
Do u know its price and where to find them in Kolkata ?
d6bmg
d6bmg #20
Oct 10, 2012 at 10:29 PM
^^ No idea. :-(
The Incinerator
Oct 11, 2012 at 1:10 PM
Use mosquito net and double sided tape (3M will do)

How did I miss this!!! He wants to repel Dust and not Malaria and Dengue!!! You never cease to amuse me.