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Subject: whats the difference
Replies: 8 Views: 916
07_ps 6.04.10 - 04:40pm
hey all, could someone explain to me the difference between a 32 bit and 64 bit processor please? * +
jay.mack 6.04.10 - 05:06pm
http://en.wikipedia.org/wiki/32-bit a good accurate source. * +
jay.mack 6.04.10 - 05:07pm
In computer architecture, 32-bit integers, memory addresses, or other data units are those that are at most 32 bits (4 octets) wide. Also, 32-bit CPU and ALU architectures are those that are based on registers, address buses, or data buses of that size. 32-bit is also a term given to a generation of computers in which 32-bit processors were the norm. * +
jay.mack 6.04.10 - 05:07pm
The range of integer values that can be stored in 32 bits is 0 through 4,294,967,295 or 2,147,483,648 through 2,147,483,647 using two's complement encoding. Hence, a processor with 32-bit memory addresses can directly access 4 GB of byte-addressable memory. * +
jay.mack 6.04.10 - 05:08pm
The external address and data buses are often wider than 32 bits but both of these are stored and manipulated internally in the processor as 32-bit quantities. For example, the Pentium Pro processor is a 32-bit machine, but the external address bus is 36 bits wide, and the external data bus is 64 bits wide.(1) * +
jay.mack 6.04.10 - 05:08pm
The external address and data buses are often wider than 32 bits but both of these are stored and manipulated internally in the processor as 32-bit quantities. For example, the Pentium Pro processor is a 32-bit machine, but the external address bus is 36 bits wide, and the external data bus is 64 bits wide. * +
jay.mack 6.04.10 - 05:08pm
the first few paragraphs of that article. * +
07_ps 6.04.10 - 06:19pm
cheers jay but what would that be in laymans? lol * +
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