I'm about to install 4GB into a Dell Dimension 4600 running a Northwood 3.4GHZ CPU.
The memory consists of two Dell 1GB PC3200U-30330 DDR 400MHZ CL3 Non-EEC memory chips and two Micron 1GB PC3200U-30330 DDR 400MHZ CL3 Non-EEC 64x8.memory chips
My understanding is old machines like the Dimension 4600 will not necessarily recognize all 4GB unless I install the right operating system. I believe it's something to do with 32-bit and 64-bit systems which I'm completely unfamiliar with.
Can anyone tell me what operating system I need to install/what I need to do to have the machine use and recognize all 4GB.
I have copies of Windows XP Home, Windows XP Professional and Windows 7 Ultimate that I can install on the 4600.