Originally Posted by
Loren Pechtel
Yup. To go past 4gb requires either Vista 64 or XP 64. Furthermore, some other things intrude into that 4gb space. I've seen numbers from 2.8gb to 3.5gb actually available on various machines.
You also have to be sure the hardware chipset supports the max memory, in addition to the OS variant. Example, Vista 64 on a laptop is limited by shiset hardware. I had these things bookmarked from a recent infrastructure project:
Microsoft's list of the memory limits by OS flavor:
http://msdn.microsoft.com/en-us/libr...78(VS.85).aspx
Intel's lists of max memory by Laptop ChipSet type:
http://compare.intel.com/pcc/showcha...&culture=en-US
These are laptops, other chipset types, desktop, server, etc are here.
And there's a guy who did a quick test on some Lenovo ThinkPads and captured the images from the My Computer > Properties list.
It shows what you're referring to, something less that the total in the MS and Intel lists.