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Here are the OS maximums for popular versions of Microsoft Windows.
Windows 95: 1GB
Windows 98: 1GB
Windows 98SE: 1GB
Windows ME: 1.5GB
Windows NT: 4GB
Windows 2000 Professional: 4GB
Windows 2000 Advanced Server: 4GB or 8GB with PAE enabled
Windows 2000 Datacenter Server: 4GB or 64GB with PAE enabled
Windows XP Home: 4GB
Windows XP Professional: 4GB
I do not recall if x86 still uses port-mapped I/O, that could be it, since you need address space for input-output devices too.mateo said:When you have above 3 GB, the excess is reserved for system devices, hardware and such. I'm not sure if this is an artifact of XP or of 32-bit systems in general. I'm not 100% sure this is the correct explanation, but its the gist I picked up from researching DH800 stuff, since a few users who've maxed out their RAM faced this "issue".
-_{MoW}_-Assasi said:32 Bit processors can only support 4 gigs of ram, 64 bit can support much higher, 64 gigs i recall i think
-_{MoW}_-Assasi said:32 Bit processors can only support 4 gigs of ram, 64 bit can support much higher, 64 gigs i recall i think
32 bit systems max out ammount of ram they can address at 4 gigs or something
current x86-64 systems can address up to something like 256 terabytes.
Chrome- said:The max RAM Windows XP Pro can support is 4 GB, which is enough for anybody.