Does Vista Ultimate 32 supports more than 4GB of ram

[Fryderyk]

I have recently installed Genuine Windows Vista® Ultimate 32 on my PC and I am having 4GB of ram. I want to ask whether I can install more than 4gb of ram. Will Vista going to support it?

[Dutta]

Sorry dude but all 32bit operating systems can support atmost 4GB of RAM and not more than that.

[unlimitedtech]

Yeah Dutta is absolutely right.

The fact is that 32-bit Windows XP or Windows Vista will not use more than 3.2 GB to a maximum of 3.5 GB of RAM, even if the hardware configuration comes with a full 4 GB.

However, this is not case with 64-bit Windows operating systems. In Vista, you can have a maximum of 128 GB RAM in Ultimate, Business and Enterprise, while the Home Premium and Home Basic editions supports 16 GB and 8 GB of RAM respectively.

[BiGMaCHiNe]

The fact is that 32-bit Windows XP or Windows Vista will not use more than 3.2 GB to a maximum of 3.5 GB of RAM, even if the hardware configuration comes with a full 4 GB.

This is because significant chunks of address space below 4GB get reserved for use by system hardware: BIOS – including ACPI and legacy video support; PCI bus including bridges etc. PCI Express support will reserve at least 256MB, up to 768MB depending on graphics card installed memory