I'm thinking that Windoze 7, 32 bit, won't use more
than 4 Gigs even if there are more in the machine.
Hmmm. . . .
(Blurbs)
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Well, since Windows Vista and Windows 7 have many things in common, Windows 7 (32-bit) will support up to 4GB but I think it only use 3.3GB of RAM, I'm afraid.
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Windows 7 32 bit, Windows Vista 32 bit, Windows XP 32 bit, Linux 32 bit, all have something in common... 32 bit numbers go up to 4 billion.
So to address each byte of memory, you need to have a number to address it by... once you run out of numbers, you can't address any more.
So 32 bit operating systems have what is called a 4GB address space... However... system memory is only one kind of memory... there is also Graphics memory for example, so each device shares in part of the 4 billion available addresses.
all this means in practical use, you will see 2.5 to 3.6 GB of available address space for system memory depending on what size of memory your hardware is consuming...
This is one of the main reasons to switch over to 64 bit addressing.
64 bit numbers can address up to about 16 exabytes of memory... so the hardware ceases to be a limitation.
so yeah on average Windows 7 (and every other 32 bit OS) can use around 2.5 to 3.6 GB of system Memory
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Zim
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