In actual intel releases EMT 64 cpu that can capable to run 64 bit but they are not actual 64 bit cpu. I think after windows 8 there is no more 32 bit releases then the question between 64 & 128 bit processing. also stoping 32 bit means dump of lot of processing power means about 60% of harware in a developing country like INdia. it cost too much. Also there is more problem related to ewaste.