higher leakage = higher temps but higher OC Lower leakage=lower temps but usually low OC. Bad leakage? that is not even a type of leakage. Every transistor has some type of leakage, that is why ES CPUs in previous gens to SB OC so much higher, because usually they had unlock TDPs. I woudl actually expect the higher binned cards for the same type to have lower ASIC if the leakage is what they say is quality of the silicon. My ref gigabyte GTX 570 is 89.7% i don't think ASIC refers to just leakage. overclockers should want higher as higher leakage transistors usually can work faster, that is why they use them in very critical parts of teh GPU.