|There is no reason to change it. 4gig is still not enough to cover the lost ram used by the 64bit system. Add to that the loss of any 16bit apps and you have to get drivers for the entire system and may have to reload apps as above.|
Laptops with 64 bit may be a good choice if it is like a core i7 with 9Gig ram.
64 bit is not faster, uses more ram and hard drive, and generally older devices are not supported well.
Why did it take me over a year to phone in a problem to ATT?