(Nasdaq: MRCY) announced the introduction of its cluster edition for Open
Inventor(R) from Mercury at the European Association of Geoscientists and
Engineers (EAGE) Conference and Exhibition. The Open Inventor from Mercury
Cluster Edition is a technology breakthrough that enables application
developers to overcome limitations of display hardware cost effectively.
You can identify these statements by our use of the words "may," "will,"
"should," "plans," "expects," "anticipates," "continue," "estimate,"
"project," "intend," and similar expressions. Securities and Exchange Commission,
including its Quarterly Report on Form 10-Q for the quarter ended March 31,
2005. The Company cautions readers not to place undue reliance upon any such
forward-looking statements, which speak only as of the date made."

Designers need new power integrity technology
PowerGrid is ideal for rapid design iterations of power distribution
networks and signal traces. At 200 amps, even 0.

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These forward-looking statements
involve risks and uncertainties that could cause actual results to differ
materially from those projected or anticipated.

PowerGrid technology
PowerGrid is composed of AC and DC modules and works with most CAD
interfaces, including Cadence Allegro, Synopsys Encore BGA, Mentor Graphics
MCM Station, Zuken CR-5000 or any Gerber file. For very large designs of 30 layers and more,
PowerGrid DC solves the combined resistive network using a built-in high-speed
solver.

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In military reconnaissance and surveillance platforms the
Company's systems process real-time radar , sonar, and signals intelligence
data. The result is accuracy and high-performance in: modeling IR drop;
computing voltage; current density distributions; and generating equivalent
SPICE netlists . PowerGrid AC delivers results up to 100X faster than 3D full-wave
extraction tools, making PowerGrid ideal for rapid design iterations.

NOTE: Optimal Corporation, the Optimal logo and PowerGrid are trademarks
of Optimal Corporation.

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PowerGrid is also available as a standalone tool for IC Package applications
for $50,000 and for PCB applications for $50,000. The company's
breakthrough technology and engineering expertise have helped leading chip and
system companies solve challenging high-speed design problems and bring
industry-leading products to market.

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Based on a distributed scene graph, the Open Inventor from Mercury Cluster
Edition allows an application to run unchanged on a master computer, with its
scene graph optimally distributed to slave cluster nodes.
The Open Inventor from Mercury Cluster Edition and VolumeViz LDM are
available on Linux systems, including AMD Opteron64, and Intel Xeon EMT64. PowerGrid AC exactly models irregular-shaped geometries and arbitrary
locations of ports and decoupling capacitors by triangular plane resonance
models.

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The Open Inventor from Mercury Cluster Edition and
VolumeViz LDM offer the most consistent coverage of high-performance
visualization platforms including graphics clusters, multi-pipe SMP machines,
and video compositing systems.com
and http://www.
Ching-Chao Huang, Senior Vice President of Optimal Corporation , stated,
"Today it is common for I/O switching speeds to get to one GHz and beyond, and
it is equally common to switch 10, 20, even 30 amps on chip.

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Based in Chelmsford, Massachusetts, Mercury serves customers in North
America, Europe and Asia through its direct sales force and a network of
subsidiaries and distributors. Such risks and uncertainties
include, but are not limited to, general economic and business conditions,
competition, changes in technology, delays in completing engineering and
manufacturing programs, continued success in technological advances and
delivering technological innovations, shortages in components, production
delays, and market acceptance of the Company's products .

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"Data sets can be extremely large and complex, such as
when derived from seismic acquisition , making the interpretation of results
all the more challenging.
The high level of data synchronization , caching, and management enable
Open Inventor from Mercury Cluster Edition to provide unparalleled
transparency for the best possible load balancing and scalability with any
available combination of CPU, GPU, channels, memory, storage, and network
resources.

Forward-Looking Safe Harbor Statement
This press release contains certain forward-looking statements, as that
term is defined in the Private Securities Litigation Reform Act of 1995,
including those relating to the Open Inventor from Mercury Cluster Edition. Product and company names mentioned
may be trademarks and/or registered trademarks of their respective holders.
PowerGrid consists of a patent-pending model-based full-wave extractor
that is 100x faster than comparable field solvers.

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"
The Open Inventor from Mercury Cluster Edition also offers users great
flexibility to interactively navigate within several hundred gigabytes of
volume data. These trends will require the adoption and use of the
sophisticated design tools from Optimal. At the same time, the ground
bounce, an effect due to fast switching activities, is becoming the bottleneck
of high-performance chip designs.

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Contacts:
Laurent Coureau, Marketing Manager, 3D Viz Group
Mercury Computer Systems , Inc.
PowerGrid's DC module uses a rigorous finite element method (FEM) in
conjunction with triangular meshes to exactly model irregular-shaped
geometries layer-by-layer. All other trademarks and registered trademarks are
the property of their respective owners.

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This
optimized software solution enables transparent scalability of Open Inventor
from Mercury and VolumeViz(TM) LDM (large data management) for increased
resolution, quality, and performance in applications that display large
volumes of data. Mercury's systems are also used in state-of-the-art medical diagnostic
imaging devices including MRI, PET, and digital X-ray, and in semiconductor
imaging applications including photomask generation and wafer inspection. Visit Mercury on the web at http://www.mc.S. Mercury
Computer Systems SA is source licensee of Open Inventor.

About Optimal
Optimal is a leading provider of high-performance signal integrity and
power integrity electronic design automation software .

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Optimized 3D Graphics Software Delivers Scalable, Collaborative, and Cost
Efficient Solution for Large Display Walls and Data Intensive Management

MADRID, Spain, Mercury Computer Systems ,
Inc. (Nasdaq: MRCY) is the leading provider of
high-performance embedded, real-time digital signal and image processing
solutions. Mercury's solutions play a critical role in a wide range of
applications , transforming sensor data to information for analysis and
interpretation.
lcoureau@mc.

Optimal Corporation(TM) Introduces Integrated Power Integrity Tool Suite for Package and PCB Co-Verification

These factors
represent enormous design challenges at the interfaces between the IC and
package; package and PCB; and PCB and system that are exacerbated by the move
to higher speed, higher power , lower supply voltages, higher densities and
finer geometries.

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Mercury plans to release the Windows version for both 32- and 64-bit
architecture during the last quarter of calendar year 2005. The Company
undertakes no obligation to update any forward-looking statement to reflect
events or circumstances after the date on which such statement is made.com
TEL: 978-967-1126

Open Inventor is a registered trademark of Silicon Graphics, Inc. VolumeViz LDM is a
trademark of Mercury Computer Systems SA.

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These applications, which include oil exploration and
production, and scientific 3D visualization , are typically run on high-
performance visualization computer systems with multiple Internet-networked
graphics machines, also called graphics clusters.
Mercury will demonstrate the Open Inventor from Mercury Cluster Edition at
its EAGE booth and at the American Association of Petroleum Geologist (AAPG)
Conferences in Calgary, Alberta, Canada, June 19-23. These risks and
uncertainties also include such additional risk factors as are discussed in
the Company's recent filings with the U .

Pricing and availability
PowerGrid for complete package-to-PCB co-design is priced at $70,000. Additional information may be obtained
online at info@optimalcorp.

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It manages the
parallelized rendering of portions of the total image to calculate and
display. It is designed for seamless adaptation to legacy Open Inventor from
Mercury and/or VolumeViz LDM applications; no additional effort is required
for user interface integration deployment on arbitrary configurations.
Mercury provides advanced 3D image processing and visualization software and
optimized systems to diverse end markets including life sciences, geosciences,
and simulation.1 milli-ohm of resistance
will translate into 20 mV drops, enough to upset the voltage margins of a
one-volt design.

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com/tgs.
kdonahue@mc.

, Optimal Corporation, a leading
provider of high-performance EDA solutions serving the semiconductor industry,
today announced PowerGrid, a power integrity toolset for IR drop and ground
bounce analysis of power distribution networks for integrated IC package and
PCB co-verification.
PowerGrid 's AC module uses patent-pending model-based full-wave extraction
techniques to compute S-parameters of both signal traces and power/ground
planes.

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"A key advantage of our Open Inventor from Mercury Cluster Edition is the
ability to manage and dynamically analyze massive volumes of data , and propose
3D representations that are appropriate to the geophysics people," said Jean
Bernard Cazeaux, vice president of Geosciences and 3DViz Technology, Mercury
Computer Systems, Inc.

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About Mercury Computer Systems, Inc. PowerGrid(TM) Analyzes IR Drop and Ground Bounce
at up to 100X Faster Than Field Solvers

SAN JOSE, Calif. The IR drops and electromigration concerns are now moving
from the IC to the package and PCB designs.

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Mercury Computer Systems Introduces Open Inventor from Mercury Cluster Edition for Massive Volume 3D Data Management and Visualization

From data analysis and interpretation to decision making, this
powerful technology can dramatically impact collaboration workflow in
geosciences, material sciences analysis, product design and simulation, visual
simulation and much more. All demonstrations will
include large seismic and reservoir data on a 12-screen high resolution
display (approximately 16 million pixels ) driven by a compact/high-density
visualization cluster from Mercury.
PowerGrid targets advanced IC package and PCB designs to: 1) analyze and
model DC IR drop, and voltage and current density distributions; 2) simulate
impedance and resonant frequencies of power distribution networks with or
without decoupling capacitors; 3) model the contributions of power
distribution networks to simultaneous switching noise (SSN); and 4) extract
multi-terminal parasitic models of package and PCB interconnects. As IC designs get more complicated, chip power and
current are increasing rapidly .

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Cazeaux added. The Company also provides radio frequency (RF) products for
enhanced communications capabilities in military and commercial applications.mc.com
TEL: +33 556 13 40 02

Kathy Donahue, Public Relations Manager
Mercury Computer Systems, Inc.

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"I believe the combination of our software cluster technology with high-
end visualization systems significantly accelerates the decision-making
process," Mr. Leveraging its out-of-core capabilities, VolumeViz LDM transforms
Open Inventor from Mercury into an optimal middleware for the management and
visualization of very large volume data.

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Mercury Computer Systems, Inc. PowerGrid is the only
commercially -available finite-element solver customized for DC analysis in
package and PCB environments.