Stupid Question of the day

ashegam

Member
Mar 4, 2005
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I have a case fan that measures 90x90.

I was wondering if I buy a 92x92 fan will the holes fall in the same place as the 90x90 fan?

 

Zepper

Elite Member
May 1, 2001
18,998
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90mm or 92mm are just diff. ways of saying the same thing. Most case fans are designed to English (inches - with the basic design measurement spec being between the mounting hole centers on the diameter). Seldom does the measurement across the flats come out on the even 10mm, but that is used for naming convenience. For example: what are called 120mm are actually closer to 119 and 90mm are actually closer to 92 across the flats, but the distance between mounting hole centers is the constant as that is what really has to be accurate for case makers to do repeatable mounts. The distance across the flats and thickness can vary within some tolerance.

.bh.