Duty Cycle vs Q-Fan?

Rhyick

Weaksauce
Joined
Aug 31, 2006
Messages
103
Hi, I currently have an ASUS Crossfire motherboard, and in the fan speed control settings in the BIOS, there is an option to set my fans to either Duty Cycle or Q-Fan. From what I understand, I believe Q-Fan may be just on the ASUS mobos.

What is the difference between the two settings, and which do you think is better? My current CPU (Socket AM2 Athlon 64 X2 4200+) temps are 39C/50C.
 
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