Windows Vista RAM Limitations
August 03, 2007 by Jason
Can’t get enough RAM installed? More RAM may make a better PC, but if you have a standard 32-bit system don’t bother getting more than 4GB as that the most the system will report to Windows. This is simply an architectural limitation of 32-bit Windows. In fact, it is more like 3GB!
A 32-bit version of Vista will never even use the full 4GB of RAM in your system. It’s because of the memory mapped IO reservations, which control how the onboard memory on your installed devices overwrites parts of the system memory, which lowers the total memory available to Vista itself. Read More»
