Where’s my 4GB of Ram? - In Vista
February 12, 2008
So, you just bought/made a new computer with 4GB of sweet sweet RAM but the installed OS (Vista 32-bit) only shows 3GB. What’s the deal?
If you run Vista 32-bit, there’s nothing that you can do about this issue. The reason stems from a decision made long before 4GB was even a feasible option. The name of this behaviour — Memory Mapped Input Output Reservations
A large chunk of memory is made available to System Hardware and can usually cost you 256mb to 1GB of your favourite volatile memory. Therefore it is inaccessible by your OS and you only “see” 2.75GB to 3.5GB.
If you run:
Windows 32-bit OS - The maximum amount of usable memory is 4GB unless you have a PAE equipped system
Windows 64-bit OS - The maximum amount of usable memory is between 8GB and 128GB, but accessibility depends on your chipset
aizen Design
Hahahaha .. Ram.
HAhahhaa.. Ram.