I know with the 400 series cards if you removed the core cooler you could do so while leaving on the full coverage ram/vreg sinks. im going to be watercooling my rig and have an mcw80 just sitting around that I make use of, and if the card already has heatsinks on it all id have to do is swap out the stock core cooler with the mcw80. So anyone know if its a seperate heatsink and core cooler?

Here is a quick tutorial on removing just the cooling chamber.
  http://www.youtube.com/wa...nnotation_443883 

If you look at post #74 on page three TyPe-ZeRo put up a nice close-up picture which includes the layout of the holes around the chip. This might give you an idea if your block will fit.  http://forums.evga.com...x?m=702986&mpage=3