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IBM publishes new scores for SPECjbb2005 benchmark
April 12, 2007 ... IBM® BladeCenter® HS21 blade server, using IBM Java
2 5.0 Runtime
Environment, achieved 216,915 SPECjbb2005 business operations per second (SPECjbb2005
bops) and 108,457 SPECjbb2005 bops/JVM, demonstrating competitive performance for an x86-
based 2-processor blade running SPECjbb2005 (Java Business Benchmark), SPEC's benchmark
for evaluating the performance of servers running typical Java applications.
The HS21 blade achieved these results using two Quad-Core Intel® Xeon® Processor X5355 at
2.66GHz with 8MB L2 cache, and 1333MHz FSB (2 chips/8 cores/4 cores per chip), 8GB of
memory, one 36.4GB disk drive, and running IBM J9 J2RE 5.0 (32-bit) using a 1.5GB heap, and
Microsoft® Windows® Server 2003 Enterprise Edition (64-bit). (1)
Results referenced are current as of April 12, 2007. The SPECjbb2005 results have been
submitted to SPEC for review. Upon successful review, the result will be posted at,
which contains a complete list of published SPECjbb2005 results.
(1) Planned availability for this HS21 model is April 27, 2007.
IBM and System x are trademarks or registered trademarks of International Business Machines
Intel and Xeon are trademarks or registered trademarks of Intel Corporation.
Java and all Java-based trademarks are trademarks of Sun Microsystems, Inc. in the United
States, other countries, or both.
SPEC and SPECjbb2005 are trademarks or registered trademarks of Standard Performance
Evaluation Corporation (SPEC).
All other company/product names and service marks may be trademarks or registered
trademarks of their respective companies.



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