hillywav: i'm guessing that as MIPS ram blocks are for those memory modules aswell, then their optionally purchaseable replacement heatsink modules might fit with EK block too, but as tiborr wrote, you'd better use those Corsair Dominator modules (though Mushkin Copperhead series might be compatible too?) or if for those replacement heatsinks - try finding heatsink-less memory, as many have complained about difficulty to remove stock heatsinks fixed with thermal glue without damaging memory module.