Hi there, well its about time I upgraded my ram (4GB) but as I am limited using 32 bit xp I wondered if the upgrade to 64 bit would be useful? I use my pc for all the usual things and my uni work involves a lot of C/C++ programming. I think I am right in saying Dev C++ works in 64bit? Anyone use 64 and notice a big difference? Also is it worth just taking the plunge into vista 64? Thanks, Dave