The mounting holes on my leadtech 4600 are 79mm apart, center to center. I can't see exactly because of the massive factory heatsink, but I assume a line connecting the 2 holes would pass over the centre of the core, and the core would be mid way between the holes.
The first hole (coming from the connector end) is 69mm above the bottom of the pcb, and the second hole is 18mm above, measuring from the center of the holes once again.
There appears to be around 20mm of clearance between the edge of the core and the top of the agp slot (with the card in the mobo of course)
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