http://windowsteamblog.com/windows/b/bloggingwindows/archive/2010/07/08/64-bit-momentum-surges-with-windows-7.aspx

I have been using 64-bit on all the machines I own that can run it. While the features are the same as the 32-bit versions, it’s the ability to fully utilize all the capabilities of your machine is what I love.

Now many people ask me should I run 64-bit Windows on my computer? There is really at this stage (who knows for the future?) only two things to consider when making this decision.

  • How much RAM do you have? (This is the most important)
  • Do you have a multi-core or 64-bit processor?

If you have 4GB of RAM in your machine, and lets face it many of the newer machines quite often do, apart from a lot of the lower end smaller machines, then you definitely want to go 64-bit as the architecture of that OS will fully utilize the memory you have.

On all my machines, where I can, I run 64-bit, and have had no problems from applications for business to games… love it.