Upgrade your system from x32 to x64.
Upgrade your system from x32 to x64.
ASUS P5Q Turbo works with a 2GB stick, though only a couple are available. The user confirms the i5 4440 is 64-bit and is currently running on Windows 7 Home Premium 64-bit.
This appears to be compatible with a 64-bit system. If you possess an official key—such as the 7x86 Ultimate—it’s quite unusual for a legitimate key, given that “Ultimate” implies full professional features and a 32-bit setup would be outdated for modern machines. Microsoft treats both x86 and x64 (32 or 64 bit) installations equally, so you’re free to download the 64-bit ISO directly from their site. It will let you choose between 64-bit or 32-bit options. For verification, you could burn a live DVD with any 64-bit Linux distribution and check its reported memory capacity using system settings tools on Ubuntu or Kubuntu.
To address your concern, upgrading from X86 to X64 isn't feasible through standard methods—it's not officially supported. A complete reinstall is the only reliable solution. There might be unofficial techniques, but attempting such upgrades can jeopardize system stability and should be avoided.