"Mounting" height difference between AM3 and AM4?

[mrjayviper]

Mounting height = the height of the CPU heart spreader when measured from the PCB

I believe there's a difference because I seemed to recall Noctua provides different colour spacers for AM3 (white) and AM4 (black).

I've searched the net but cannot find the answer.

Thanks

Edit: I downloaded the Noctua D15 installation manual and what I said is correct.