I have a 2011 Mac mini server (quad-core i7, 2.0GHz) and the fan is going bad.
The current fan, part no. 610-0164 is rated 12V 0.66A.
The widely available replacement fans on eBay are rated 12V 0.5A. They are marked as part no. 610-0069.
Does anyone have evidence that the replacement 0.5A fans are suitable for this computer, or should I try to find an exact replacement?