new cpu for dell optiplex 755

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If you measure from the base of your present installed cooler do you have 159mm to the case panel?

The 755 Minitower also has the CPU rotated 45 degrees so one corner would be fairly close to the edge of the board, but the Cooler Master mounting system allows for rotating the cooler somewhat.

I don't see why you'd want to do this as the stock cooler directly vents the heat out of the case which is poorly ventilated.
If you measure from the base of your present installed cooler do you have 159mm to the case panel?

The 755 Minitower also has the CPU rotated 45 degrees so one corner would be fairly close to the edge of the board, but the Cooler Master mounting system allows for rotating the cooler somewhat.

I don't see why you'd want to do this as the stock cooler directly vents the heat out of the case which is poorly ventilated.
 
Solution