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how much memory can be accessed by a 32 bit machine?

Asked 2012-01-15T12:19:40.657
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What is meant by 32bit or 64 bit machine?

It’s the processor architecture…a 32 bit machine can read and write 32bit data at a time same way with 64 bit machine….

whats the maximum memory that a 32 bit machine can access?

It is 2^32=4Gb (4Gigabit = 0.5 GigaByte)

That means 4Gb ram?

If I consider the same way for a 64 bit machine then I can have a ram of 16ExbiBytes ..is that possible?

Are my concepts right?

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basically 32bit architecture can address 4GB as you expected. There are some techniques which allows processor to address more data like AWE or PAE.

answered 2012-01-15T12:25:30.720

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