AMCC Announces Volume Shipments of Industry's Highest Performing SATA RAID Controllers.

Business Editors/High-Tech Writers

SUNNYVALE, Calif.--(BUSINESS WIRE)--May 10, 2004

3ware 9000 Series Hardware RAID Controllers Feature Industry-Leading

Increases in Performance and Management Capabilities -- Now Available

for VARs, OEMs and System Builders

Applied Micro Circuits Corporation (AMCC) (Nasdaq:AMCC) today announced the availability of its fastest Serial ATA (SATA) RAID controllers to date. The 3ware 9000 Series outperforms the competition, enabling enterprise-class SATA RAID storage solutions for mid and high-end computing applications. The new controllers also provide advanced RAID tools and features for greater data protection and ease of system configuration and management. The controllers are now available worldwide in 12, 8, and 4-port configurations.

AMCC recently announced the acquisition of 3ware to extend the company's presence in the storage market. AMCC also purchased JNI in October of 2003. The company's expanding storage product portfolio now includes SATA controllers and Fibre Channel host bus adapters to broaden its market opportunity into NAS, DAS, and SAN storage applications.

"The 3ware 9000 Series substantially raises the bar for SATA RAID by combining ultra-high throughput, advanced system management, and a lower cost/performance ratio," said Barbara Murphy, Vice President of Marketing at AMCC Storage Business Unit. "AMCC is the only company that delivers an all-inclusive solution that covers the entire RAID spectrum of capacity, feature-set, and performance. The new controllers enable system builders to deliver cost-effective, high performance hardware RAID solutions where capacity, scalability, reliability and read/write speeds are paramount."

The new family of SATA controllers, based on the company's innovative StorSwitch(TM) switched RAID architecture, provides scalable 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 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)(1), RAID level Migration(1), 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 Microsoft(R) Windows(R) 2003/XP/2000, Red Hat(R) Linux, SuSE(R) Linux, and FreeBSD 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.

(1) Channel availability summer 2004.

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, 2003, 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.