Overclock.net › Forums › Cooling › Air Cooling › Maximizing air flow tips!
New Posts  All Forums:Forum Nav:

Maximizing air flow tips!

post #1 of 23
Thread Starter 
Was just curious as to what you guys would run as intake/exhaust in terms of case fans. I currently have 2x 120mm front of HDD/Back of case, 1 100mm side case fan and 80mm top case fan.

Front 120 - Intake
Back 120 - Exhaust
Side 100 - Exhaust
Top 80 - Exhaust

Should I make the side fan intake or exhaust? Perhaps there are a few other tweaks I could make to my tower that I don't know about to maximize air flow?
My Junk
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500k @ 4.2 stock voltage ASUS P8P67 LE B3 Galaxy GTX 780 2x4GB Corsair Vengeance 1600 
Hard DriveOSMonitorKeyboard
1x 256gb OCZ SSD Windows 7 Ultimate 64bit Samsung PX2370 Razer BlackWidow Ultimate 
PowerCaseMouseMouse Pad
Corsair 1000HX Antec 1200 Razer Taipan NONE! 
  hide details  
Reply
My Junk
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500k @ 4.2 stock voltage ASUS P8P67 LE B3 Galaxy GTX 780 2x4GB Corsair Vengeance 1600 
Hard DriveOSMonitorKeyboard
1x 256gb OCZ SSD Windows 7 Ultimate 64bit Samsung PX2370 Razer BlackWidow Ultimate 
PowerCaseMouseMouse Pad
Corsair 1000HX Antec 1200 Razer Taipan NONE! 
  hide details  
Reply
post #2 of 23
Pics would help, but depending on the position of the 100mm and 80mm, I would have one, if not both, of them turned to intake.
Obsidian
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 930 3.6ghz 1.146v EVGA x58 GTX470 water 6GB 1600mhz 6-8-6-18 1.6V 
Hard DriveOSMonitorKeyboard
SSD (80+60GB) HDD (2+2TB) Windows 7 x64 24" + 22" G15 
PowerCaseMouse
M12D 850W 800D G9 
  hide details  
Reply
Obsidian
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 930 3.6ghz 1.146v EVGA x58 GTX470 water 6GB 1600mhz 6-8-6-18 1.6V 
Hard DriveOSMonitorKeyboard
SSD (80+60GB) HDD (2+2TB) Windows 7 x64 24" + 22" G15 
PowerCaseMouse
M12D 850W 800D G9 
  hide details  
Reply
post #3 of 23
yeah pics would definitely help. and i totally agree, generally its a lot harder for a fan to suck air in than blow it out.
post #4 of 23
bottom, front, sides are intake
rear and top are exhaust
try to get a 50/50 - 60/40 exhaust/intake mixture in cfm's
post #5 of 23
Thread Starter 
Sadly the camera is out of the house right now, let me see if I can find the case online or a similar build.

http://www.newegg.com/Product/ShowIm...+Computer+Case

About the closest I could get, the other fan sits up top in the center part of the case. I'll go ahead and run the side fan as intake and leave the top as exhaust for right now to see how things fair out, I made the side fan exhaust due to my GPUs sitting right along side of it to help pull heat from the two.
My Junk
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500k @ 4.2 stock voltage ASUS P8P67 LE B3 Galaxy GTX 780 2x4GB Corsair Vengeance 1600 
Hard DriveOSMonitorKeyboard
1x 256gb OCZ SSD Windows 7 Ultimate 64bit Samsung PX2370 Razer BlackWidow Ultimate 
PowerCaseMouseMouse Pad
Corsair 1000HX Antec 1200 Razer Taipan NONE! 
  hide details  
Reply
My Junk
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500k @ 4.2 stock voltage ASUS P8P67 LE B3 Galaxy GTX 780 2x4GB Corsair Vengeance 1600 
Hard DriveOSMonitorKeyboard
1x 256gb OCZ SSD Windows 7 Ultimate 64bit Samsung PX2370 Razer BlackWidow Ultimate 
PowerCaseMouseMouse Pad
Corsair 1000HX Antec 1200 Razer Taipan NONE! 
  hide details  
Reply
post #6 of 23
take the foam peices out of the drive bay covers. you will see what i mean when you take them off.
cut the honey combs out of the front and top of the case.
cut the mesh outto the front under the grill where the peice is holding in the blue 120 in the front(it is cloth not the metal)

you would be better off have fresh cold air comming in to cool off the vga then to pull it out. your gpu fans push air onto the gpu so cool air being push in would yeaild better cooling proformance
Edited by noobdown - 6/22/08 at 4:06pm
post #7 of 23
Quote:
Originally Posted by CoolerMasterD View Post
Sadly the camera is out of the house right now, let me see if I can find the case online or a similar build.

http://www.newegg.com/Product/ShowIm...+Computer+Case

About the closest I could get, the other fan sits up top in the center part of the case. I'll go ahead and run the side fan as intake and leave the top as exhaust for right now to see how things fair out, I made the side fan exhaust due to my GPUs sitting right along side of it to help pull heat from the two.
Oh ok I know that case, I have worked with it before. Yeah keep that side fan as an exhaust if you absolutely have to keep it; but honestly I find that airflow is much better without a side fan in general due to the fact that it tends to disrupt air flow. Usually its better for air to go in a straight line (from a front view of your computer) as opposed to branching off to the left or right (top exhaust is ok because airflow is still in a straight line if looked at from the front of your computer). A side fan as an intake (sometimes as an exhaust too) tends to create a vacuum like effect that is well....not good. BUT, in your case your side fan is very small, and it will most likely make a very small vacuum effect if any.This is unlike cases with bigger side fans like a 250mm, which create very big problems.

Also it all depends on whether or not your 8800gt's exhaust their own hot air out the back of the case, or continue to circulate the hot air within it. If they do in fact exhaust the air out the back like a dual slot gpu does, then the side fan is useless. If not, then it might be worth something like what you were saying. Only thing is, your gpu's fan wants to suck in that cold air from your intake, and having an exhaust right by it might exhaust your gpu's hot air, as well as the cold air.

Lastly, I would suggest putting another 120mm fan just in back of the drive bay, about 6 inches behind the front intake fan, due to the fact that you can't really put another intake fan anywhere else. This is because you need to balance out your exhaust/intake fan cfm ratio. Currently its like ~3:1. Another thing that it could do is take the cold air that the fan in front of your computer is sucking in, and bring it a lot closer to your graphics cards. This could give them a chance to suck the cold air in before the side exhaust fan blows it out along with the hot air, should you decide to keep the side fan.

With the above tips and suggestions, just experiment and see what presents the best results. There is no magic solution, so its best to kinda try everything.
Edited by fencefeet - 6/22/08 at 4:34pm
post #8 of 23
Quote:
Originally Posted by noobdown View Post
bottom, front, sides are intake
rear and top are exhaust
try to get a 50/50 - 60/40 exhaust/intake mixture in cfm's
This noob is right
Kopisaurus
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel 2500k @ 5ghz 1.395v Gigabyte P67A-UD3P-B3 ATI HD6950 2GB (flashed --> 6970) 16GB Gskill Sniper 1600mhz 
Hard DriveOptical DriveOSMonitor
500gb WD Black / 2x 1TB WD Black RAID1 LG DVD/RW Super Multi Windows 7 Enterprise x64 ASUS ML239H 23" LED  
KeyboardPowerCaseMouse
Logitech G15 (modded) Corsair TV750W V2 Lian-Li Lancool PC-K62B Logitech G5 
  hide details  
Reply
Kopisaurus
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel 2500k @ 5ghz 1.395v Gigabyte P67A-UD3P-B3 ATI HD6950 2GB (flashed --> 6970) 16GB Gskill Sniper 1600mhz 
Hard DriveOptical DriveOSMonitor
500gb WD Black / 2x 1TB WD Black RAID1 LG DVD/RW Super Multi Windows 7 Enterprise x64 ASUS ML239H 23" LED  
KeyboardPowerCaseMouse
Logitech G15 (modded) Corsair TV750W V2 Lian-Li Lancool PC-K62B Logitech G5 
  hide details  
Reply
post #9 of 23
Thread Starter 
Yeah, for sure the back and top would be exhaust for obvious reasons I'm gonna mess around with the fan structure and see if I can tweak a bit more air flow out of it based off of these suggestions. Thanks a ton guys!

Oh, by the way I placed the side fan as intake and my core temp dropped to 43c 39c idle from 45c 41c
My Junk
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500k @ 4.2 stock voltage ASUS P8P67 LE B3 Galaxy GTX 780 2x4GB Corsair Vengeance 1600 
Hard DriveOSMonitorKeyboard
1x 256gb OCZ SSD Windows 7 Ultimate 64bit Samsung PX2370 Razer BlackWidow Ultimate 
PowerCaseMouseMouse Pad
Corsair 1000HX Antec 1200 Razer Taipan NONE! 
  hide details  
Reply
My Junk
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500k @ 4.2 stock voltage ASUS P8P67 LE B3 Galaxy GTX 780 2x4GB Corsair Vengeance 1600 
Hard DriveOSMonitorKeyboard
1x 256gb OCZ SSD Windows 7 Ultimate 64bit Samsung PX2370 Razer BlackWidow Ultimate 
PowerCaseMouseMouse Pad
Corsair 1000HX Antec 1200 Razer Taipan NONE! 
  hide details  
Reply
post #10 of 23
Quote:
Originally Posted by CoolerMasterD View Post
Yeah, for sure the back and top would be exhaust for obvious reasons I'm gonna mess around with the fan structure and see if I can tweak a bit more air flow out of it based off of these suggestions. Thanks a ton guys!

Oh, by the way I placed the side fan as intake and my core temp dropped to 43c 39c idle from 45c 41c
dont ya hate taking that side panel off and on? i cring cause the frist time i tried to put it back on after installing a 80mm there it took about a half an hour to put the panel back on right
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Air Cooling
Overclock.net › Forums › Cooling › Air Cooling › Maximizing air flow tips!