System fans 1 and 2 slow

Soldato
Joined
27 Dec 2005
Posts
17,316
Location
Bristol
So I noticed 2/5 fans in a case were spinning slowly, went into the BIOS and after setting all to full speed three get to full speed of circa 1300rpm, whilst system fans 2 and 3 (the ones I noticed) had values that flicked between 700/1300 constantly.

Are the fans themselves broken or is it another BIOS or something issue? I can't swap the fans about for a while as a it's a business machine but thought I'd ask in the meantime in case it's a common/expected thing.
 
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