The upgrade will not attract any new license cost if the existing license is genuine. In this post, we will share how you can check if you can upgrade to 64 bit Windows 10 on the same PC.

In this guide, we'll show you the proper steps to upgrade from the 32-bit to the 64-bit version of Windows 10 without purchasing a new license.

If your 64-bit PC is running XP Home, you must first spend about $150 to $190 to upgrade to XP Pro. Microsoft will then send you the Windows x64 installation disc for just $12, to cover shipping.

I'm thinking of upgrading the RAM to 3GB RAM but thought why not instead I upgrade to 64-bit Windows Vista Home Premium and get 4GB RAM to get better performance.