The clip points are the same from at least 939 through AM3. I don't know about 754.
The bolt through points in early 939(i think( and am2/am2+/am3 are the same, but NOT the majority of 939, which only have two bolts,
Some 939s have more locations for clips (three wide rather then one) which interfere with certain heatsinks, but if you remove the extra clips (hacksaw!) they fit fine. Be careful with the hacksaw, though!