Compaq DL590 - HP ProLiant - 1 GB RAM Technology Brief page 4

ECC – Error Checking
and Correcting
SDRAM – Synchronous
Dynamic Random Access
Memory
PCI – Peripheral
Component Interconnect
TC020702TB
T B
ECHNOLOGY RIEF
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M P
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The ProLiant DL590/64 server incorporates the new four-way Intel Itanium-based processors and
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larger ECC SDRAM configurations to deliver the maximum performance and availability required
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for Itanium-based applications in four-processor compute environments. Innovative ProLiant
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technology adds reliability, features such as redundant power distribution, and efficient system
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board and cooling designs.
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ProLiant DL590/64 Server Architecture
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The ProLiant DL590/64 server is Compaq's first Itanium-based product. The architecture
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(Figure 1) uses the Intel 82460GX chipset. The chipset includes a 133-megahertz (MHz)
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front-side bus that uses both edges of the clock cycle to produce 266 megatransfers per second and
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supports dual memory boards and up to four Intel Itanium processors. The ProLiant DL590/64
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server architecture also includes support for up to 64 GB of industry-standard 100-MHz SDRAM
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and up to four PCI bridges with a total of 11 slots.
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Figure 1: Diagram of ProLiant DL590/64 server architecture.
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Processors
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The ProLiant DL590/64 server includes support for up to four 733-MHz or 800-MHz
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. . Itanium-based processors. The 733-MHz processors support a 2-megabyte (MB) Level 3
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cache, while the 800-MHz processors support a 4-MB Level 3 cache.
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The IA-64 architecture enables greater parallelism than traditional architectures by combining
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static and dynamic scheduling, using speculative execution, and predicting code branches better
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than traditional architectures. To realize the performance improvements of this greater parallelism,
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the Itanium processor has additional hardware resources: 128 general-purpose integer registers,
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128 floating point registers, 64 predicate registers, and many execution units with parallel
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instruction dispatch (which allows executing multiple instructions in parallel).
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I T
N N O V A T I V E E C H N O L O G Y