3ware 9000 Series hardware RAID controllers deliver over 400
             MB/sec performance with Linux Kernel 2.6.x(1)

The company has also published a white paper for Linux system administrators and AMCC storage customers who are seeking to tune or benchmark their systems to work with the 3ware 9000 controllers. The white paper is available now at www.3ware.com. 3ware 9000 RAID controllers will also be on display at LinuxWorld 2004 San Francisco August 2 - 5 in AMCC booth number 156. This year, more than ten AMCC storage partners are also exhibiting at LinuxWorld including Pogo Linux, Inc. and AMAX Information Technologies.

Upgrading to Linux Kernel 2.6.x (XFS) using the 3ware 9500 series controller from 2.4.x (ext3) using the 8500 series considerably boosts RAID 5 reads by 125% at 408 MB/s and writes by 224% at 107 MB/s. The upgrade delivers sequential I/O with less than 3% CPU utilization. 2.6.x in conjunction with the 3ware SATA RAID controller also increases the maximum file system size from 2 TB to 16TB and the maximum RAM from 16 GB to 64 GB. The total CPU count also jumps from 16 to 64 and the threading library migrates from Linux Threads to NPTL. The upgrade also provides several additional optimized advantages including enhanced I/O infrastructure, improved scheduling for processes, and stronger security.

"For the last seven years, we have focused on delivering and enhancing storage solutions for Linux environments," said Scott Cleland, Director of Marketing at AMCC Storage Business Unit. "The 3ware 9000 Series represents our fastest SATA RAID controllers to date and when combined with Kernel version 2.6.x and the XFS file system, Linux system builders can offer the industry's highest performing(2) and cost effective RAID solutions."

The new family of SATA controllers, based on the company's innovative StorSwitch(TM) switched RAID architecture, provides scaleable capacity up to 4.8 TB per controller, using 400 GB drives, and total system capacity limited only to available PCI slots. AMCC's advanced hardware RAID architecture features an on-board processor and an integrated RAID ASIC that offloads RAID controller functions from the host CPU, dedicating the server processing to its core applications and enhancing overall system performance.

Designed to support the next generation of 64 bit computing applications, the new controllers support single arrays of up to 4.8 TB(3) via 64 bit LBAs on one controller. The 3ware 9000 Series platform is designed to protect the customer's investment in RAID by offering field upgradeable added value such as On-line capacity expansion (OCE)(4) , RAID level Migration(4), Battery Backup and enclosure management services via an integrated I2C bus. The remote management software, 3ware Disk Manager 2 (3DM(R)2) and the Command Line Interface tool simplify storage configuration and management securely and remotely.

AMCC also offers the 3ware 9000 Series controllers with Multi-lane Internal (MI) connectors for high capacity industrial environments. This innovative design increases reliability, and simplifies installation and routing via an innovative cabling solution for large-scale configurations. The 3ware 9500 Multi-lane controllers include a highly reliable, locking cable/connector system that combines 4 SATA ports into one on the controller side. 12-port configurations feature 3 integrated connectors and an 8-port configuration offers 2 integrated connectors.

AMCC Product Support

The 3ware 9000 Series of RAID controllers ship with a 3-year warranty and are compatible with Red Hat(R) Linux, SuSE(R) Linux, FreeBSD and Microsoft(R) Windows(R) 2003/XP/2000 operating systems. For additional information, please visit www.3ware.com.

AMCC Overview

AMCC provides the essential building blocks for the transport, switching, routing and storage of information worldwide. The company blends systems and software expertise with high-performance, high-bandwidth silicon integration to deliver communications silicon and software for global wide area networks (WAN), Fibre Channel host bus adapters (HBAs) for storage area networks (SAN), and hardware and software solutions for high-growth storage markets such as Serial ATA (SATA) RAID. AMCC's corporate headquarters are located in San Diego, California. Sales and engineering offices are located throughout the world. For further information regarding AMCC, please visit the AMCC web site at http://www.amcc.com.

Forward Looking Statements

The statements contained in this press release that are not purely historical are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Such forward-looking statements, including statements relating to the products discussed in this press release are subject to a number of risks and uncertainties, including the risk that the products would not be successfully or timely developed, completed or manufactured or achieve market acceptance, risks relating to general economic conditions, as well as the risks and uncertainties set forth in the Company's Annual Report on Form 10-K for the year ended March 31, 2004, and in other filings of the Company with the Securities and Exchange Commission. As a result of these risks and uncertainties, actual results may differ materially from these forward-looking statements. The forward-looking statements contained in this news release are made as of the date hereof and AMCC does not assume any obligation to update any forward-looking statement.

(1) Tested using the Boniee++ benchmark on a dual processor Intel Xeon

(2.4GHz) system with 512MB RAM running Red Hat 9 on a 2.6.5 Kernel

with 3ware SATA RAID controllers and 12, 70 GB WDC WD740GD-00FLA0

drives in RAID 5 hardware configuration

(2) Tested using Intel's Iometer benchmark program on a dual processor

Intel Xeon (2.4GHz) system with PhoenixBIOS, 512MBytes system RAM,

Microsoft Windows 200 Advanced Server, the Escalade 9500S-8 66MHz

SATA RAID controller and Maxtor 7Y250MQ, 250GB, 7200 RPM drives

(3) Calculated using 12 x 400GB capacity drives. Will grow as drive

capacity increases

(4) Shipping Summer 2004

CONTACT: Applied Micro Circuits Corporation
Debra Hart, 858-535-4217 (Investor Relations)
dhart@amcc.com
or
FutureWorks PR for AMCC Storage
Brian Solis, 408-428-0895 Ext. 101 (Media/Editorial)
brian@future-works.com

SOURCE: Applied Micro Circuits Corporation