Overclock.net › Forums › Cooling › Water Cooling › Diminishing returns in radiators?
New Posts  All Forums:Forum Nav:

Diminishing returns in radiators? - Page 2

post #11 of 12
As some have stated, the amount of radiator you need to 'cool anything' depends greatly on what speed your fans will be moving. The largest bottleneck of a water-cooled system (given a proper pump) is always the radiator-to-air heat transfer. The more radiator area you have, the more surface of contact you have with the air and can transfer the same amount of heat as less radiator area with higher speed fans. People who want dead quiet rigs tend toward several 60mm-80mm thick radiators with very low rpm fans.

Your air/water delta at load will never be 0 unless you use sub-ambient cooling; the more radiator surface area you have at the same fan speed, the closer to 0 it will become: this will always be a diminishing return once you reach the saturation point of heat transfer for your air-flow rate on your particular radiator. Whether you decide to run an air/water delta of 20C or 2C is up to you.
post #12 of 12
On my test station I had 63C temps (82F ambient) on a i7-970 @4.05. I was running a dense fin 360 with some high cfm fans. As a kick I added a 480 in series with the 360.It dropped my temps by a wopping additional 2C.
WC Rig
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7-930@4.05GHz ASUS P6X58D-Preminum XFX GeForce 275 896mb 6GB Corsair TR3X6G1600C8D 
Hard DriveOptical DriveOSMonitor
WD 150gb Raptor LightScan Win 7 64-bit Acer 22" 
KeyboardPowerCaseMouse
G15 Corsair HX620W Antec 1200 several various 
Mouse Pad
none 
  hide details  
Reply
WC Rig
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7-930@4.05GHz ASUS P6X58D-Preminum XFX GeForce 275 896mb 6GB Corsair TR3X6G1600C8D 
Hard DriveOptical DriveOSMonitor
WD 150gb Raptor LightScan Win 7 64-bit Acer 22" 
KeyboardPowerCaseMouse
G15 Corsair HX620W Antec 1200 several various 
Mouse Pad
none 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Water Cooling
Overclock.net › Forums › Cooling › Water Cooling › Diminishing returns in radiators?