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LinuxHardware.org: Intel's New "Nocona" Xeon: Part 1

Oct 30, 2004, 09:00 (1 Talkback[s])

[ Thanks to Augustus for this link. ]

"Intel's new processor's claim to fame is Intel's new EM64T architecture which aims to bring 64-bit processing and 64-bit memory addressing to the x86 architecture while still maintaining 32-bit compatibility. What does this mean exactly? Well, all previous 32-bit processors from Intel only support running 32-bit applications under a 32-bit operating system. Intel calls this IA-32 mode. With the EM64T architecture, Intel has enabled what they call IA-32e mode. This mode either allows you to run 64-bit application under a 64-bit OS or even 32-bit applications under a 64-bit OS. In 64-bit mode, your addressable memory addressing goes from 4 Gigabytes max to 16 Exabytes (17,179,869,184 GB) max, which makes enterprise customers very happy since, in some situations, 4GB won't cut it..."

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