Benefits; Breaking The 4 Gb Address Limit - HP ProLiant BL35p Manual

Benefits

Table A-1 outlines key benefits of the Opteron processor.
Table A-1: Key benefits of the Opteron processor
Feature
Simultaneous 32- and 64-bit computing
capabilities
Direct Connect Architecture helps reduce
performance bottlenecks
Support for up to three coherent
HyperTransport links, providing up to 19.2
GB/s peak bandwidth per processor
256 Terabytes (TB) of memory address space More memory space creates a significant performance benefit
Scales from one-way to eight-way
Integrated memory controller reduces
latencies during memory access
Low-power processor models are available
• HE – 55 W
• EE – 30 W

Breaking the 4 GB address limit

Opteron processors take advantage of the 64-bit addressing capabilities of Windows Server
2003 to break the 4 GB direct-addressing limit inherent in earlier x86 implementations.
Note:
Windows Server 2003 for 64-Bit Extended Systems is required to
extend memory space for x86 processors featuring 64-bit
extension technologies.
Information on the release of this operating system is available on
the Microsoft website.
Benefit
Users can run 32-bit and/or 64-bit applications and
operating systems – without sacrificing performance.
Direct Connect Architecture can reduce memory latency,
provide better balance for throughput, and support more
linear symmetrical multiprocessing.
HyperTransport links provide substantial I/O bandwidth for
current and future application needs.
for applications where large datasets – or a large number of
datasets – are stored in memory.
The scalability of the processor helps maximize flexibility in
the IT infrastructure.
Reduced memory latency translates to increased performance
and productivity.
Low-power processor models can increase server density and
reduce the Total Cost of Ownership (TCO) for data centers
with limited power budgets. For example, more servers can
be supported at a data center with utility power constraints.
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