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Processors
2-3
Figure 2-2 shows the location of the processor sockets (along with the processor
number) on the processor board.
Figure 2-2 Processor Socket Location on Processor Board
Supported Processors
Express5800/A1160 systems support the following Intel Xeon processor 7400 series
(Dunnington) processors:
• Model E7440 (2.4 GHz with 2 x 3-MB L2 cache, 16-MB L3 cache, quad core, 1066
MHz front-side bus)
• Model X7460 (2.66 GHz with 3 x 3-MB L2 cache, 16-MB L3 cache, hex core, 1066
MHz front-side bus)
Check with your sales representative for the availability of a specific processor.
Multicore Processors
Multicore processors contain four or six complete physical processors (cores) in the
same integrated circuit. A quad-core processor (four cores) can appear as four logical
processors, and a hex-core processor (six cores) can appear as six logical processors.
Extended Memory 64 Technology (EM64T)
The Xeon processors support the Intel EM64T technology. EM64T is an enhancement
to the 32-bit Intel architecture. It allows a processor to run 64-bit code and access larger
amounts of memory. Processors with Intel EM64T support 64-bit operating systems
from Microsoft, SUSE, and Red Hat. Processors running in legacy or 32-bit mode
remain fully compatible with existing 32-bit applications and operating systems.
Rules for Mixing Processors
Intel supplies different types, or families, of processors, such as the Intel Xeon
processor family. In addition, processors within a given family can have different