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Opinions/scientific info wanted: CFM vs. Pressure

post #1 of 2
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I'm doing some research on 120mm fans for CPU coolers. It's a difficult endeavor given that you cannot really rely on fan manufacturers' claims of their products' performance stats. Unless you've got proper testing equipment to accurately measure things like CFM (amount/volume of air displaced in a minute) or pressure, at best you can take their claims with a grain of salt.

Here's the question, then: What's more important: A fan's CFM stats, or its pressure stats? Remember, we're talking strictly about fans to be used on CPU coolers.

Aerodynamics experts, please chime in! All thoughts and opinions are most certainly welcome!
    
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CPUMotherboardGraphicsRAM
Phenom II X3 720 BE Gigabyte GA-MA790FXT-UD5P Sapphire Radeon HD 3870 2 x 2GB Crucial Ballistix Tracers PC3 10600 
Hard DriveCoolingOSPower
Almost 8TB of storage AMD Stock Cooler Windows Home Server CoolerMaster SilentPro M 700W 
Case
Lian Li PC-V2000B (with thlnk3r mods) 
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post #2 of 2
Depends... look under my head vs flow FAQ. Now apply that to air instead of water.


Trust industrial company fan ratings since they must be more strict and regulated. They are selling to engineers who require certain parameters and can test. Panaflo, Sunon, Yate Loon, etc.
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Once again...
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CPUMotherboardGraphicsRAM
i7 920 [4.28GHz, HT] Asus P6T + Broadcom NetXtreme II VisionTek HD5850 [900/1200] + Galaxy GT240 2x4GB G.Skill Ripjaw X [1632 MHz] 
Hard DriveOSMonitorKeyboard
Intel X25-M 160GB + 3xRAID0 500GB 7200.12 Window 7 Pro 64 Acer H243H + Samsung 226BW XARMOR-U9BL  
PowerCaseMouseMouse Pad
Antec Truepower New 750W Li Lian PC-V2100 [10x120mm fans] Logitech G9 X-Trac Pro 
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Reply
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Overclock.net › Forums › Cooling › Other Cooling Discussions › Opinions/scientific info wanted: CFM vs. Pressure