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Please help me decide on orientation of case fans

post #1 of 2
Thread Starter 
The case I have is the Rosewill Gear X3.

It came with 3 case fans installed (a 140mm front intake which cools the HDD's, a 120mm rear exhaust and a 120mm top exhaust). I had 2 120mm's lying around which I can add to either the 2 side openings or as another blow hole.

Now the thing is the different fans have different cfm's.

This is currently how I have my case setup:

Top exhaust = 120mm Rosewill DF1202512SELN 12v 0.16A
Rear exhaust = 120mm Rosewill DF1202512SEMN 12v 0.20A
Front intake = 140mm Rosewill
CPU = 120mm Sunon 2400rpm 69cfm or 92mm Panaflo 56cfm

I can swap out the CPU 120mm and use a 92mm Panaflo which I had been using normally.

I don't know the cfm value of the Rosewill fan's that came with the case so not sure where I should put the highest cfm fans. I was thinking side intakes or 1 side intake and swap the rear exhaust with the higher cfm for exhaust.
Big Bertha Jr.
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Big Bertha
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CPUMotherboardGraphicsRAM
Intel i5 3570k @ 4 GHz Asrock Z77 Extreme4 Sapphire HD 7870 OC CrossFireX 8GB DDR3 1600MHz G.SKILL Ripjaws X 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 250GB SSD Seagate 2TB HDD Asus BC-12B1ST BD-ROM TRUE Black push w/ Rosewill 120mm 
PowerCaseAudio
Seasonic X750 Rosewill Gear X3 X-Fi XtremeMusic + Audio-Technica M50S headphone 
CPUMotherboardGraphicsRAM
Intel Core2Duo E8400 Gigabyte P35-DS3L PowerColor HD 5450 4GB DDR2 G.SKILL 
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Big Bertha Jr.
(12 items)
 
Big Bertha
(8 items)
 
 
CPUMotherboardGraphicsRAM
Intel i5 3570k @ 4 GHz Asrock Z77 Extreme4 Sapphire HD 7870 OC CrossFireX 8GB DDR3 1600MHz G.SKILL Ripjaws X 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 250GB SSD Seagate 2TB HDD Asus BC-12B1ST BD-ROM TRUE Black push w/ Rosewill 120mm 
PowerCaseAudio
Seasonic X750 Rosewill Gear X3 X-Fi XtremeMusic + Audio-Technica M50S headphone 
CPUMotherboardGraphicsRAM
Intel Core2Duo E8400 Gigabyte P35-DS3L PowerColor HD 5450 4GB DDR2 G.SKILL 
CoolingMonitorPowerCase
Ximgatech Dark Knight 19" Spectre LCD Enermax 431W Inwin Q800 
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post #2 of 2
Thread Starter 
I changed some fan orientations around but wow the noise from these 120mm sunon's is overwhelming.

I have the following setup at the moment:

140mm front bottom intake (HDD cooling)
120mm x 2 side intake (screamers, need to find something with less db's, these are 35 or 36 db's)
120mm x 2 top intake
92mm cpu fan
120mm psu fan

Basically the only exhaust is the psu fan which really doesn't exhaust system airflow because of the way it's oriented in this case. So the only exhaust is the natural flow of air in the case. The temps definitely improved from what I was using before with rear exhaust and 1 top exhaust, but it's probably just the super 120+ cfm produced by the 120mm x 2 side intakes. Before motherboard temp was around 35c max and max core temps of 47-48C while folding, now it's as follow with around 24-25C ambient temp:

allintake.jpg

Uploaded with ImageShack.us

I was thinking of picking up Rosewill 120mm 4-pack and using them in the same orientation as above.

Thoughts?
Edited by Swiftdeathz - 8/21/11 at 4:35pm
Big Bertha Jr.
(12 items)
 
Big Bertha
(8 items)
 
 
CPUMotherboardGraphicsRAM
Intel i5 3570k @ 4 GHz Asrock Z77 Extreme4 Sapphire HD 7870 OC CrossFireX 8GB DDR3 1600MHz G.SKILL Ripjaws X 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 250GB SSD Seagate 2TB HDD Asus BC-12B1ST BD-ROM TRUE Black push w/ Rosewill 120mm 
PowerCaseAudio
Seasonic X750 Rosewill Gear X3 X-Fi XtremeMusic + Audio-Technica M50S headphone 
CPUMotherboardGraphicsRAM
Intel Core2Duo E8400 Gigabyte P35-DS3L PowerColor HD 5450 4GB DDR2 G.SKILL 
CoolingMonitorPowerCase
Ximgatech Dark Knight 19" Spectre LCD Enermax 431W Inwin Q800 
  hide details  
Reply
Big Bertha Jr.
(12 items)
 
Big Bertha
(8 items)
 
 
CPUMotherboardGraphicsRAM
Intel i5 3570k @ 4 GHz Asrock Z77 Extreme4 Sapphire HD 7870 OC CrossFireX 8GB DDR3 1600MHz G.SKILL Ripjaws X 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 EVO 250GB SSD Seagate 2TB HDD Asus BC-12B1ST BD-ROM TRUE Black push w/ Rosewill 120mm 
PowerCaseAudio
Seasonic X750 Rosewill Gear X3 X-Fi XtremeMusic + Audio-Technica M50S headphone 
CPUMotherboardGraphicsRAM
Intel Core2Duo E8400 Gigabyte P35-DS3L PowerColor HD 5450 4GB DDR2 G.SKILL 
CoolingMonitorPowerCase
Ximgatech Dark Knight 19" Spectre LCD Enermax 431W Inwin Q800 
  hide details  
Reply
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