Overclock.net › Forums › Cooling › Air Cooling › Help with fan case orientation
New Posts  All Forums:Forum Nav:

Help with fan case orientation

post #1 of 10
Thread Starter 
I have a HAF 922 and by default it comes with a 200mm intake fan at the front, 200mm exhaust at top and a 120mm exhaust at the rear. I will be adding 120mm at the side, at the bottom and at the front bays this weekend and I need help on how the top fan needs to be placed. Picture 1 or 2? Or any other suggestions?

Picture 1



Picture 2

Yep, Aeris died
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5-2500K @4.8 Ghz ASUS Maximus IV Extreme EVGA GTX 580 SC Corsair Vengeance LP 4 x 4 GB 
Hard DriveHard DriveCoolingOS
Crucial RealSSD C300 WD Caviar Black Asetek 760GC Windows 7 
OSPowerCaseMouse
FreeBSD Corsair Professional Series HX650 Corsair Obsidian 650D Logitech G700 
  hide details  
Reply
Yep, Aeris died
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5-2500K @4.8 Ghz ASUS Maximus IV Extreme EVGA GTX 580 SC Corsair Vengeance LP 4 x 4 GB 
Hard DriveHard DriveCoolingOS
Crucial RealSSD C300 WD Caviar Black Asetek 760GC Windows 7 
OSPowerCaseMouse
FreeBSD Corsair Professional Series HX650 Corsair Obsidian 650D Logitech G700 
  hide details  
Reply
post #2 of 10
Picture 1 is preferred and usually gives better performance, for that reason all HAF series comes in that configuration.
The New One
(19 items)
 
Ocing rig z97
(9 items)
 
 
CPUMotherboardGraphicsRAM
6700k Gigabyte Z170X Ulta Gaming GTX 1080 HoF Mushking 4*4GB 
Hard DriveHard DriveHard DriveHard Drive
Crucial M4 Crucial M500 Itachi Desktar Itachi Desktar 
Hard DriveCoolingOSMonitor
Toshiba Raystorm Pro CPU Windows 10 Professional BenQ XL2420Z 
KeyboardPowerCaseMouse
Thermaltake Corsair AX1200i HAF X Thermaltake Saphira 
Mouse PadAudioOther
QCK Gamecome 780 APC 1500VA 
CPUMotherboardGraphicsRAM
Intel Core G3258 Gigabyte Z97X SOC Force ASUS GTX 760 Striker Platinum G.Skill TridentX 
Hard DriveCoolingOSOS
Crucial MX100 Extreme cooling Windows 7 Pro x64 Windows XP Pro SP3 x86 
Power
EVGA SuperNOVA 1300V G2 
CPUMotherboardGraphicsRAM
Phenom II X6 1090T Gigabyte 890FXA-UD5 ASUS GTX 760 Striker Platinum Crucial Ballistix Tracer 
RAMHard DriveHard DriveHard Drive
G.Skill Trident Crucial M4 Itachi Desktar Itachi Desktar 
Hard DriveHard DriveOptical DriveCooling
Crucial M500 Toshiba LG EK Supreme HF Full Nickel 
CoolingCoolingCoolingOS
Swiftech MCR-320QP Swiftech MCP655-D XSPC Reservoir Windows 7 Professional 
MonitorKeyboardPowerCase
BenQ XL2420z TT eSports Meka G1 Corsair AX1200i Cooler Master HAF X 
MouseMouse PadAudioOther
TT eSports Saphira QCK+ Creative Sound Blaster Recon3D Fatal1ty Profess... Plantronics GameCom 780 
  hide details  
Reply
The New One
(19 items)
 
Ocing rig z97
(9 items)
 
 
CPUMotherboardGraphicsRAM
6700k Gigabyte Z170X Ulta Gaming GTX 1080 HoF Mushking 4*4GB 
Hard DriveHard DriveHard DriveHard Drive
Crucial M4 Crucial M500 Itachi Desktar Itachi Desktar 
Hard DriveCoolingOSMonitor
Toshiba Raystorm Pro CPU Windows 10 Professional BenQ XL2420Z 
KeyboardPowerCaseMouse
Thermaltake Corsair AX1200i HAF X Thermaltake Saphira 
Mouse PadAudioOther
QCK Gamecome 780 APC 1500VA 
CPUMotherboardGraphicsRAM
Intel Core G3258 Gigabyte Z97X SOC Force ASUS GTX 760 Striker Platinum G.Skill TridentX 
Hard DriveCoolingOSOS
Crucial MX100 Extreme cooling Windows 7 Pro x64 Windows XP Pro SP3 x86 
Power
EVGA SuperNOVA 1300V G2 
CPUMotherboardGraphicsRAM
Phenom II X6 1090T Gigabyte 890FXA-UD5 ASUS GTX 760 Striker Platinum Crucial Ballistix Tracer 
RAMHard DriveHard DriveHard Drive
G.Skill Trident Crucial M4 Itachi Desktar Itachi Desktar 
Hard DriveHard DriveOptical DriveCooling
Crucial M500 Toshiba LG EK Supreme HF Full Nickel 
CoolingCoolingCoolingOS
Swiftech MCR-320QP Swiftech MCP655-D XSPC Reservoir Windows 7 Professional 
MonitorKeyboardPowerCase
BenQ XL2420z TT eSports Meka G1 Corsair AX1200i Cooler Master HAF X 
MouseMouse PadAudioOther
TT eSports Saphira QCK+ Creative Sound Blaster Recon3D Fatal1ty Profess... Plantronics GameCom 780 
  hide details  
Reply
post #3 of 10
Definitely 1, the second looks like too much positive pressure
   
Little Big Build
(15 items)
 
CPUMotherboardGraphicsRAM
Intel i5 2500k Asrock z77e itx EVGA GTX 980 ACX Crucial Ballistix Tactical Tracer 8gb 
Hard DriveHard DriveCoolingCooling
Wester Digital Scorpio Black Mushkin Chronos Deluxe Swiftech H20-220 Elite Noiseblocker Multiframe M12-s3hs x2 
OSMonitorKeyboardPower
Windows 7  Yamakasi Leonidas 30" 2560x1600 (LG) Ducky Shine II Silverstone 450w Gold 
CaseMouseMouse PadAudio
Lazerwerx Custom Razer Naga Cyber Snipa XL Corsair Vengeance 1500 
Other
Lamptron FC Touch Fan Controller 
CPUMotherboardGraphicsRAM
AMD 750k Black Gigabyte FM2 A85x Wifi AMD 6950 Corsair Vengeance 
Hard DriveCoolingOSMonitor
Corsair Force SSD Cooler Master Seidon 120 Ubuntu Built In 
Case
Aluminum Briefcase 
CPUMotherboardGraphicsRAM
i5 2500k asrock z77 itx asus gtx 670 crucial ballistix 
Hard DriveHard DriveCoolingOS
Western Digital caviar black mushkin chronos deluxe  corsair h100 w/ 4x Cougar Vortex windows 
MonitorKeyboardPowerCase
Yamakasi Leonidas 30" 2560x1600 razer blackwidow ultimate seasonic x750 bitfenix prodigy 
MouseAudioOther
Razer Naga corsair vengeance 1500 Lamptron Touch fan controller 
  hide details  
Reply
   
Little Big Build
(15 items)
 
CPUMotherboardGraphicsRAM
Intel i5 2500k Asrock z77e itx EVGA GTX 980 ACX Crucial Ballistix Tactical Tracer 8gb 
Hard DriveHard DriveCoolingCooling
Wester Digital Scorpio Black Mushkin Chronos Deluxe Swiftech H20-220 Elite Noiseblocker Multiframe M12-s3hs x2 
OSMonitorKeyboardPower
Windows 7  Yamakasi Leonidas 30" 2560x1600 (LG) Ducky Shine II Silverstone 450w Gold 
CaseMouseMouse PadAudio
Lazerwerx Custom Razer Naga Cyber Snipa XL Corsair Vengeance 1500 
Other
Lamptron FC Touch Fan Controller 
CPUMotherboardGraphicsRAM
AMD 750k Black Gigabyte FM2 A85x Wifi AMD 6950 Corsair Vengeance 
Hard DriveCoolingOSMonitor
Corsair Force SSD Cooler Master Seidon 120 Ubuntu Built In 
Case
Aluminum Briefcase 
CPUMotherboardGraphicsRAM
i5 2500k asrock z77 itx asus gtx 670 crucial ballistix 
Hard DriveHard DriveCoolingOS
Western Digital caviar black mushkin chronos deluxe  corsair h100 w/ 4x Cougar Vortex windows 
MonitorKeyboardPowerCase
Yamakasi Leonidas 30" 2560x1600 razer blackwidow ultimate seasonic x750 bitfenix prodigy 
MouseAudioOther
Razer Naga corsair vengeance 1500 Lamptron Touch fan controller 
  hide details  
Reply
post #4 of 10
First one, hot air rises so you want the fan to pull it out of the case.
Fearless~
(20 items)
 
The Intel Side
(18 items)
 
 
CPUMotherboardGraphicsRAM
AMD Phenom II X6 1090T @ 3.8 Asus Sabertooth 990FX EVGA GrillForce GTX 465 SLI Mushkin Blackline 2x4gb 1600mhz [1.5v] 
Hard DriveHard DriveHard DriveOptical Drive
OCZ Vertex 3 120GB WD Caviar Black (1002FAEX)1TB Synology DS210J (4tb) Lite-on DVD Rewriter 16x IDE External 
CoolingOSMonitorKeyboard
Noctua NH-D14 Windows 7 Home Premium x64 Samsung Syncmaster E2320 Metadot Das Professional S Silent 
PowerCaseMouseMouse Pad
Corsair TX 850 V1 [Original PSH] NZXT Gamma Classic Series Mid-Tower Logitech VX Revolution Razer Sphex 
AudioAudioAudioAudio
Asus Xonar DX Klipsch Promedia 2.1 Bose Triport/Klipsch S3 Blue Snowball 
CPUMotherboardGraphicsRAM
Intel i3 2100 Gigabyte H61M-S2PV Asus GT430 Corsair XMS3 2x2gb 1333mhz 
Hard DriveHard DriveHard DriveOptical Drive
Intel X-25V 40GB Synology DS210j (4tb) Seagate Barracuda 120gb LG CH12LS28 Blu Ray  
CoolingOSOSMonitor
Thermalright X-Silent 120 Mac OS X 10.8.2 Windows 7 Ultimate x64 Toshiba 46VX700VU 
KeyboardPowerCaseMouse
Microsoft Wireless Optical Desktop 700 XFX 450w Core Edition Silverstone ML03B Microsoft Wireless Optical Desktop 700 
AudioAudio
Realtek Onboard Klipsch Promedia 2.1 
CPUMotherboardGraphicsRAM
Core 2 Duo P8700 2.53ghz Apple Logic Board Nvidia Geforce 9400m 4gb @1066 
Hard DriveHard DriveOptical DriveOS
Western Digital Scorpio Black 320gb Synology DS210j (4tb) Apple SuperDrive Mac OS X 10.8.4/Windows 7 Ultimate 64bit 
MonitorKeyboardPowerCase
13" 1280x800 Glossy Backlit Apple Keyboard/OCN Ducky Tenkeyless [MX... 65w Magsafe Aluminium Unibody 
MouseAudioAudio
Apple Trackpad/Logitech MX310 Fiio A1 + Sony Bookshelf Blue Snowball 
  hide details  
Reply
Fearless~
(20 items)
 
The Intel Side
(18 items)
 
 
CPUMotherboardGraphicsRAM
AMD Phenom II X6 1090T @ 3.8 Asus Sabertooth 990FX EVGA GrillForce GTX 465 SLI Mushkin Blackline 2x4gb 1600mhz [1.5v] 
Hard DriveHard DriveHard DriveOptical Drive
OCZ Vertex 3 120GB WD Caviar Black (1002FAEX)1TB Synology DS210J (4tb) Lite-on DVD Rewriter 16x IDE External 
CoolingOSMonitorKeyboard
Noctua NH-D14 Windows 7 Home Premium x64 Samsung Syncmaster E2320 Metadot Das Professional S Silent 
PowerCaseMouseMouse Pad
Corsair TX 850 V1 [Original PSH] NZXT Gamma Classic Series Mid-Tower Logitech VX Revolution Razer Sphex 
AudioAudioAudioAudio
Asus Xonar DX Klipsch Promedia 2.1 Bose Triport/Klipsch S3 Blue Snowball 
CPUMotherboardGraphicsRAM
Intel i3 2100 Gigabyte H61M-S2PV Asus GT430 Corsair XMS3 2x2gb 1333mhz 
Hard DriveHard DriveHard DriveOptical Drive
Intel X-25V 40GB Synology DS210j (4tb) Seagate Barracuda 120gb LG CH12LS28 Blu Ray  
CoolingOSOSMonitor
Thermalright X-Silent 120 Mac OS X 10.8.2 Windows 7 Ultimate x64 Toshiba 46VX700VU 
KeyboardPowerCaseMouse
Microsoft Wireless Optical Desktop 700 XFX 450w Core Edition Silverstone ML03B Microsoft Wireless Optical Desktop 700 
AudioAudio
Realtek Onboard Klipsch Promedia 2.1 
CPUMotherboardGraphicsRAM
Core 2 Duo P8700 2.53ghz Apple Logic Board Nvidia Geforce 9400m 4gb @1066 
Hard DriveHard DriveOptical DriveOS
Western Digital Scorpio Black 320gb Synology DS210j (4tb) Apple SuperDrive Mac OS X 10.8.4/Windows 7 Ultimate 64bit 
MonitorKeyboardPowerCase
13" 1280x800 Glossy Backlit Apple Keyboard/OCN Ducky Tenkeyless [MX... 65w Magsafe Aluminium Unibody 
MouseAudioAudio
Apple Trackpad/Logitech MX310 Fiio A1 + Sony Bookshelf Blue Snowball 
  hide details  
Reply
post #5 of 10
Which version is your Sapphire HD6950?
Reference cooling (pic 1) or Flex version (pic 2)?

If it is reference cooling, then your picture 1 looks good.
If it is Flex cooling, then another approach could be better. I am not elaborating for the time being.

post #6 of 10
Thread Starter 
@windfire: I got the reference cooling

Thanks for the replies. I was thinking that the top fan being an intake will blow cool air to the cpu but I guess it creates turbulence inside or something.
Yep, Aeris died
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5-2500K @4.8 Ghz ASUS Maximus IV Extreme EVGA GTX 580 SC Corsair Vengeance LP 4 x 4 GB 
Hard DriveHard DriveCoolingOS
Crucial RealSSD C300 WD Caviar Black Asetek 760GC Windows 7 
OSPowerCaseMouse
FreeBSD Corsair Professional Series HX650 Corsair Obsidian 650D Logitech G700 
  hide details  
Reply
Yep, Aeris died
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5-2500K @4.8 Ghz ASUS Maximus IV Extreme EVGA GTX 580 SC Corsair Vengeance LP 4 x 4 GB 
Hard DriveHard DriveCoolingOS
Crucial RealSSD C300 WD Caviar Black Asetek 760GC Windows 7 
OSPowerCaseMouse
FreeBSD Corsair Professional Series HX650 Corsair Obsidian 650D Logitech G700 
  hide details  
Reply
post #7 of 10
Quote:
Originally Posted by Nethermir View Post
@windfire: I got the reference cooling

Thanks for the replies. I was thinking that the top fan being an intake will blow cool air to the cpu but I guess it creates turbulence inside or something.
Frankly, I think the top 200mm fan is becoming less useful as its purpose is reduced when you install a front bay 120mm intake fan.

If it is a strong exhaust, it will just suck air away from entering the 212+ (4 little blue arrows).
And it is just extremely inefficient to expect it to exhaust hot air passed through the 212+ (2 little red arrows).

If it is a strong intake, its air flow will create turbulence when crossing the path of the airflow of the new front bay 120mm intake fan.

So, as you are installing a front bay 120mm intake fan, I suggest you to keep the top 200mm fan as slow as possible.
post #8 of 10
First one.

Make sure the rear fan has high static pressure.
Fujji
(13 items)
 
  
CPURAMHard DriveOptical Drive
Phenom II N850 8gb 500gb DVD Rom 
OSMonitorCase
Windows 7 Premium 15" Inspiron 
  hide details  
Reply
Fujji
(13 items)
 
  
CPURAMHard DriveOptical Drive
Phenom II N850 8gb 500gb DVD Rom 
OSMonitorCase
Windows 7 Premium 15" Inspiron 
  hide details  
Reply
post #9 of 10
Thread Starter 
@windfire: thanks! i was thinking along those lines too, im worried that the top fan might be sucking too much air. So definitely image 1, only with lower fan speed at top.

Is there a way to lower fan speed when it is connected to PWR_FAN in mobo?
Yep, Aeris died
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5-2500K @4.8 Ghz ASUS Maximus IV Extreme EVGA GTX 580 SC Corsair Vengeance LP 4 x 4 GB 
Hard DriveHard DriveCoolingOS
Crucial RealSSD C300 WD Caviar Black Asetek 760GC Windows 7 
OSPowerCaseMouse
FreeBSD Corsair Professional Series HX650 Corsair Obsidian 650D Logitech G700 
  hide details  
Reply
Yep, Aeris died
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5-2500K @4.8 Ghz ASUS Maximus IV Extreme EVGA GTX 580 SC Corsair Vengeance LP 4 x 4 GB 
Hard DriveHard DriveCoolingOS
Crucial RealSSD C300 WD Caviar Black Asetek 760GC Windows 7 
OSPowerCaseMouse
FreeBSD Corsair Professional Series HX650 Corsair Obsidian 650D Logitech G700 
  hide details  
Reply
post #10 of 10
Quote:
Originally Posted by Nethermir View Post
@windfire: thanks! i was thinking along those lines too, im worried that the top fan might be sucking too much air. So definitely image 1, only with lower fan speed at top.

Is there a way to lower fan speed when it is connected to PWR_FAN in mobo?
Yes, there is.
The top 200mm fan spins at 900rpm at 12v default.
You can use a fan speed reduction cable (which basically adds a resistor) that can reduce the voltage from 12v to 10v, 7v and/or 5v.

As a fan has a minimum voltage at which it starts to spin up, 5v might not be enough, considering the fan is a large diameter (ie heavier weight with a larger inertia) fan. You can check the manual of the 922 to see if it lists the min starting voltage for that 200mm fan. If not, I reckon 7v is a good choice.

10v resistor cable: (both nexus and akasa make such cable)
http://www.aquatuning.us/product_info.php/info/p6670

7v resistor cable: http://www.quietpcusa.com/Zalman-RC5...TXidAXdBmH4C2m

7v resistor cable: (connects to PSU directly...a little cheaper)
http://www.sidewindercomputers.com/7adfor3fa.html

5v resistor cable:http://www.quietpcusa.com/Zalman-RC1...TXidAXdBmH4C2m

5,7,12v cable: (this connects the fan directly to a 4-pin Molex of a PSU)
http://www.newegg.com/Product/Produc...-016-_-Product
Edited by windfire - 6/10/11 at 11:58pm
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Air Cooling
Overclock.net › Forums › Cooling › Air Cooling › Help with fan case orientation