Thread: What is the max ram for Vista 32 bit?

Is the max ram for the 32 bit version only 2GB? If not, what is the max?

No, it's about 3 gigs for any 32bit OS.

Some people only see 2GB (exactly), but this is often due to memory remapping being enabled in bios. This should be disabled when using 32-bit vista/xp

"any 32bit OS" might be too much. If supported, they can go well above 4GB.

Incorrect. A 32 bit OS cannot go beyond 4GB of addressable memory, ever. And it has nothing to do with the developers coding support for more than 4 in the OS.

Why? A 32-bit register means that 2^32 addresses, or 4 gigabytes worth, can be referenced. This is a hard, mathematical limitation. This 4GB includes system memory, video RAM, and any onboard memory - anything that uses an address. This is why users see less than 4 if that's what they installed. What happens is the OS assigns addresses in order of importance: whatever's on the Motherboard, then Video, and then the installed DIMMS. What you see displayed as usable is the value of your physical RAM less Video and onboard.

You may be able to put more physical RAM on the Motherboard, but you cannot use it.

To use more than 4GB total addressable memory, you much go to a 64bit OS. That gives 2^64 (17,179,869,184 gigabytes) of addressable space.