Interesting statistic: 46% of ALL Windows 7 OS installations are 64 bit. Probably the fact that Windows Vista started the interest in 64 bit.. and the fact that all kinds of companies had to get back in the driver business and finally figured what the hey, lets do 64 bit drivers while we are at it. Memory is cheap right now. Software applications are being written to take advantage of 64 bit, even Microsoft Office 2010 has a 64 bit version available for the first time. Today with Windows 7, you should never have to see any warning messages about low memory.