Not sure there would be any benefit in that (at least for the next 5+ years)? 64 bit can support terrabytes of RAM as it is. Most people are still using 32 bit OSs. 99% of software is 32 bit. The world hasn't caught on to 64 bit yet, let alone thinking about 128 bit.Personally, I think you should wait for the new 128bit CPU's that will be arriving shortly.