Rambus Reports June Quarter Earnings

Earnings per share of 4 cents with revenue growth of 23%

Los Altos,CA - July 14, 2003 - Rambus Inc. (Nasdaq: RMBS), a leading developer of chip-to-chip interface products and services, today reported financial results for its quarter ended June 30, 2003. Earnings per share for the June quarter were 4 cents, compared to 6 cents in the same period last year and 5 cents in the previous quarter. Net income for the June quarter was $4.5 million (16% of revenues), compared to $5.9 million in the same period last year and $5.1 million in the previous quarter. Revenue for the quarter was $29.2 million, up 23% over the same period last year and up 4% from the previous quarter.

"This is our fifth quarter in a row of sequential revenue growth. We had the second quarter end with the news of our long-term partner, Samsung, signing a license agreement for the XDR? memory interface technology. The third quarter started with over 600 people attending our developer forum in Tokyo to learn more about designing with our newest interfaces," said Geoff Tate, CEO of Rambus Inc. Rambus announced last week that XDR is the official name of the memory interface that was previously code-named Yellowstone.

Second quarter results reflect $3.7 million in contract revenue, up 148% over the same period last year and up 15% from the previous quarter. This increase in contract revenue primarily reflects the contracts signed this year for XDR and Redwood technology. June quarter results include $25.5 million in royalties, up 15% over the same period last year and up 3% from the previous quarter. Royalties were up primarily due to increased shipments of DDR memories and SDRAM memory controllers.

Total costs and expenses in the June quarter increased 1% from last quarter primarily as a result of an increase in investment in research and development and in cost of contract revenues which was partially offset by a decrease in litigation costs. The increases in research and development and cost of contract revenues were driven by the investment required to meet the milestones on the contracts signed for XDR and Redwood interfaces. Total costs and expenses were $23.9 million versus $23.6 million last quarter and $16.0 million in the comparable period last year.

Q2 earnings announcement call live on website (www.rambus.com) today at 2:00 p.m. Pacific time.
Conference call replay number 800-642-1687 id number 1621589; replay also available on website.
Replay available for one week, beginning at 5:00 p.m. PST.

Click here to read the financial tables

About Rambus
Rambus is a leading provider of chip-to-chip interface products and services. The company's breakthrough technology and engineering expertise have helped leading chip and system companies to solve their challenging I/O problems and bring industry-leading products to market. Rambus' interface solutions can be found in numerous computing, consumer electronic and networking products. Additional information is available at www.rambus.com.

This release and the conference call on today's date contain forward-looking statements under the Private Securities Litigation Reform Act of 1995 regarding Rambus's financial prospects (including revenue, costs and expenses, net interest and other income, and tax rate), development plans, anticipated product shipment dates, pending litigation, relations with licensees and other third parties and various other matters. Such forward-looking statements are based on current expectations, estimates and projections about Rambus's industry, management's beliefs, and certain assumptions made by Rambus's management. Actual results may differ materially. Among the reasons which could cause actual results to differ materially are the possibility of inadequate shipments of Rambus RDRAM memory devices and controllers for the Sony PlayStation2 and the PC main memory market, the market response to these products, the continued deterioration in the DRAM market (including declining prices), any delay in the development of Rambus-based products by licensees, any delay in the development and shipment of new Rambus products, any delay in the development and shipment of products compatible with Rambus products, a greater-than-expected response of the market to competing technology, a lack of progress on price and cost reduction by RDRAM suppliers, a failure to sign new contracts or maintain existing contracts for RDRAM, XDR, RaSer or SDRAM-compatible and DDR-compatible ICs, current licensees not fulfilling their contract obligations, unexpected delays in completing contract requirements, current licensees terminating their contracts, adverse litigation decisions and other factors that are described in our SEC filings including our 10-K and 10-Qs.

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