Ady Wicaksono Daily Activities

32 Bit CPU with memory more than 4 Gbytes

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One day, I got a Dell server based on Intel Xeon EM64T 32 bit with 8 Gbytes RAM. As far as I know, 32 bit CPU could only map 2^32 or 4 Gbytes RAM, so with this 8 Gbytes RAM will it be useless?Or should I use 64 bit CPU which could map 2^64 or 18446744073709551616 bytes memory.

I found this paper

http://www.dell.com/downloads/global/vectors/2004_em64t.pdf

and found that Intel technology already found solution for this problem. Intel CPU 32 bit could read memory more than 4 Gbytes using INTEL® EXTENDED MEMORY 64 TECHNOLOGY (EM64T) . Intel EM64T could process memory up to 64Gbytes.

Written by adywicaksono

July 10, 2007 at 4:23 pm

Posted in Linux

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