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The tiny fan on most high performance video cards sits on the VGA graphics chip and is 5cm in size.The tiny fan on most high performance video cards sits on the VGA graphics chip and is Xcm in size. == 1U Rackmount Case Fan == This 5cm fan is commonly used on those rack mount cases. Some VGA graphics cards also use this fan, however, it would be rather large for most VGA cards.: This fan typically sells for under $1.00 each and is the black type small fan you typically see on your video card.: This fan typically sells for under $1.00 each.