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quick question about radiator size and matching fan size

post #1 of 3
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so im going with the xspc ex360 rad
http://www.frozencpu.com/products/14328/ex-rad-316/XSPC_EX360_Triple_120mm_Low_Profile_Split_Fin_Radiator.html

I'm going to buy yate loon fans but there are two 120mm fans with 2 different diameters and i need to know which ones i need/ it

this one:
http://www.frozencpu.com/products/10455/fan-689/Yate_Loon_120mm_x_25mm_Fan_-_Open_Chassis_D12SH-12.html
or this one
http://www.frozencpu.com/products/7558/fan-454/Yate_Loon_120mm_x_20mm_Slim_Fan_-_Medium_Speed_D12SM-12C.html
post #2 of 3
The 25 and 20 mm just refers to how wide the fan is, ie how far it would stick out from the radiator once mounted. Either fan will fit. 25mm is standard though.
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post #3 of 3
This ^ (Welocme to OCN BTW!)

25mm fans are standard, they tend to push slightly more air than 20mm although I would imagine that the difference is negligable. Get the 25mm unless you are space constrained.

Also the 25mm fan that you linked is the high speed version, the 20mm the medium speed. Depending on how you value silence I would look for a 25mm medium if you are going to run at full speed or use the 25mm high with a fan controller.
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