CODEWITHSUNDEEP
cpu-architecture
Vibhav
Vibhav

Reputation: 125

Addressable memory of a CPU

In a Computer architecture book, I studied that Pentium IV has 64 bits bus width and addressable memory of 64 gigabytes. Does it mean that a computer running Pentium IV can support 64GB RAM, if supported by the OS?

Upvotes: 3

Views: 264

Answers (1)

Severin Pappadeux
Severin Pappadeux

Reputation: 20080

This is so-called Physical Address Extension, which was supported by both Intel and AMD processors. Yes, with proper OS support 64Gb of RAM could be addressed. PLease read https://en.wikipedia.org/wiki/Physical_Address_Extension for more information

Upvotes: 3

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