Exhibit 99.1

CONTACT:

Claudia Natalia
Artisan Components, Inc.	Artisan Components, Inc.
Corporate Communications	Investor Relations
(408) 548-3172	(408) 548-3122
claudia@artisan.com

Artisan Components, Inc. Reports Record

Total Revenue for Its Fourth Quarter and Fiscal 2004

SUNNYVALE, Calif., November 1, 2004 — Artisan Components, Inc., (Nasdaq: ARTI), a leading provider of physical intellectual property (IP), today reported its results for three and twelve-month periods ended September 30, 2004. Total revenue for the fourth quarter of fiscal 2004 was comprised of license revenue and net royalty revenue of $15.6 million and $9.5 million, respectively, or $25.1 million, an increase of 29% from the same period in the prior year. Total revenue for the fourth quarter of fiscal 2003 was $19.5 million, comprised of license revenue and net royalty revenue of $16.5 million and $3.0 million, respectively.

Net income for the fourth quarter of fiscal 2004, on a generally accepted accounting principles (“GAAP”) basis, was $4.5 million or $0.18 per diluted share, which included amortization of purchased intangible assets of $897,000, costs related to the proposed merger with ARM Holdings plc of $1.8 million and amortization of deferred stock-based compensation of $18,000 from acquisitions. For the fourth quarter of fiscal 2003, GAAP net income was $2.5 million or $0.10 per diluted share, which included amortization of purchased intangible assets of $1.5 million and deferred stock-based compensation of $119,000 from acquisitions.

Pro forma net income for the fourth quarter of fiscal 2004 was $6.1 million or $0.24 per diluted share, an increase of 126% compared to pro forma net income of $2.7 million or $0.11 per diluted share for the fourth quarter of fiscal 2003. Pro forma net income is comprised of GAAP net income plus, to the extent incurred in any particular quarter, amortization of purchased intangible assets, deferred stock-based compensation expense, in-process research and development from acquisitions, transaction costs related to the proposed merger with ARM Holdings plc and the related income tax effect. A detailed reconciliation of GAAP net income to pro forma net income is included with this press release.

Total revenue for fiscal 2004 was comprised of license revenue and net royalty revenue of $57.4 million and $31.1 million, respectively, or $88.5 million, an increase of 29% from the same period in the prior year. Total revenue for the twelve months of fiscal 2003 was $68.5 million, comprised of license revenue and net royalty revenue of $58.0 million and $10.5 million, respectively.

Net income for fiscal 2004, on a GAAP basis, was $19.2 million or $0.77 per diluted share, an increase of 162%, compared with net income of $7.3 million or $0.34 per diluted share for the twelve months of fiscal 2003.

Pro forma net income for fiscal 2004 was $17.4 million or $0.69 per diluted share, an increase of 112%, compared to pro forma net income of $8.2 million or $0.38 per diluted share for the twelve months of fiscal 2003.

“Artisan is playing a critical role in connecting high-volume design teams with leading manufacturers,” said Mark Templeton, president and chief executive officer of Artisan Components. “Our growth reflects the success of this vibrant and growing community.”

Artisan is hosting a conference call beginning at 2:00 p.m. PST (5:00 p.m. EST) on, November 1, 2004 to discuss the results of the fourth quarter and fiscal 2004. Interested parties may participate in the conference call by dialing 800-322-2803 (domestic) and 617-614-4925 (international) and the passcode is 28010240 or via live webcast available within the investor relations section of Artisan’s website at http://www.artisan.com. A telephonic replay will be available through November 15, 2004 at 888-286-8010 (domestic) and 617-801-6888 (international) and within the investor relations section of Artisan’s website. The passcode for the replay is 93474825.

Use of Non-GAAP Financial Measures

This earnings release includes financial information presented on both a pro forma and GAAP basis. Pro forma net income is comprised of GAAP net income plus, to the extent incurred in any particular quarter, amortization of purchased intangible assets, deferred stock-based compensation from acquisitions, transaction costs related to the proposed merger with ARM Holdings plc and in-process research and development. Pro forma net income and net income per share are reduced by the amount of additional tax that would be required to be accrued and expensed by us if pro forma results were used instead of GAAP results to calculate our tax liability.

We provide pro forma financial information to enhance the reader’s overall understanding of our current financial performance and our prospects for the future. We believe the pro forma results provide useful information to investors by excluding certain expenses that we believe are not indicative of our core operating results. The pro forma measures are included to provide investors and management with an alternative method for assessing our operating results in a manner that is focused on the performance of our ongoing operations and to provide a more consistent basis for comparison between quarters. Further, these pro forma results are one of the primary indicators management uses for planning and forecasting in future periods. In addition, since we have historically reported pro forma results to the investment community, we believe the inclusion of pro forma numbers provides consistency in our financial reporting. The presentation of this additional information should not be considered in isolation or as a substitute for results prepared in accordance with GAAP.

Safe Harbor Statement

This press release contains forward-looking statements, including statements regarding the success and growth of the high volume design and manufacturing community and Artisan’s role within that community. These statements are subject to various risk factors including, without limitation, continued demand for semiconductors incorporating Artisan’s products and the production of those semiconductors in volume, market acceptance of Artisan’s products and technologies and competition from existing and new IP providers. We refer you also to the documents that Artisan files from time to time with the Securities and Exchange Commission, in particular the section entitled “Factors Affecting Future Operating Results” in Artisan’s annual report on Form 10-K and its quarterly reports on Forms 10-Q.

About Artisan Components

Artisan Components, Inc. is a leading provider of physical intellectual property (IP) components for the design and manufacture of complex system-on-a-chip integrated circuits. Artisan’s products include embedded memory, standard cell, input/output, analog and mixed-signal components, which are designed to achieve the best combination of performance, density, power and yield for a given manufacturing process. Artisan has licensed its IP components to over 2,000 companies involved in integrated circuit design. Artisan is headquartered in Sunnyvale, California. More information about Artisan Components, including free library access, can be found at www.artisan.com.

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Artisan Components and Artisan are registered trademarks of Artisan Components, Inc.

All other trademarks or registered trademarks are the property of their respective owners.

Artisan Components, Inc.

Condensed Consolidated Balance Sheet

(In thousands)

(Unaudited)

	Sept. 30 2004		Sept. 30 2003
ASSETS
Current assets:
Cash and cash equivalents	$	100,197	$	98,841
Marketable securities		35,719		9,921
Accounts receivable, net		24,378		18,398
Prepaid expenses and other current assets		6,480		2,197
Total current assets		166,774		129,357
Long-term marketable securities		17,790		5,504
Property and equipment, net		5,333		7,418
Goodwill, net		32,557		36,016
Purchased intangible assets, net		4,365		8,394
Deferred tax asset		17,911		—
Other assets		506		414
Total assets	$	245,236	$	187,103
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	505	$	1,486
Accrued liabilities		10,132		7,201
Deferred revenue, current portion		11,220		7,094
Total current liabilities		21,857		15,781
Deferred revenue		826		788
Other liabilities		4,751		1,146
Deferred tax liability		1,739		3,257
Total liabilities		29,173		20,972
Stockholders’ equity:
Total stockholders’ equity		216,063		166,131
Total liabilities and stockholders’ equity	$	245,236	$	187,103

Artisan Components, Inc.

Condensed Consolidated Statements of Operations

(In thousands, except per share data)

(Unaudited)

	Three Months Ended				Year Ended
	Sept.30 2004		Sept.30 2003		Sept.30 2004		Sept.30 2003
Gross revenue:
License	$	15,650	$	16,450	$	57,454	$	57,970
Royalty		10,607		4,001		35,294		14,215
Gross revenue		26,257		20,451		92,748		72,185
Net revenue:
License		15,650		16,450		57,454		57,970
Net royalty		9,490		3,038		31,089		10,543
Total revenue		25,140		19,488		88,543		68,513
Cost of revenue *		5,056		4,801		20,126		17,229
Product development *		4,560		4,991		18,458		18,377
Sales and marketing *		3,836		4,100		15,357		14,522
General and administrative *		3,838		1,567		9,281		6,386
In-process research and development		—		—		—		520
Amortization of purchased intangibles		897		1,457		4,030		4,367
Total cost and expenses		18,187		16,916		67,252		61,401
Operating income (loss)		6,953		2,572		21,291		7,112
Other income, net		514		345		1,641		1,337
Income (loss) before provision for income taxes		7,467		2,917		22,932		8,449
Provision for income taxes		2,946		379		3,687		1,106
Net income	$	4,521	$	2,538	$	19,245	$	7,343
Net income per share - basic	$	0.19	$	0.12	$	0.84	$	0.38
Net income per share - diluted	$	0.18	$	0.10	$	0.77	$	0.34
Shares used in per share calculation - basic		23,565		22,027		22,932		19,439
Shares used in per share calculation - diluted		25,764		24,428		25,105		21,690
*  Includes stock-based compensation expense of:		18		119		243		328

Artisan Components, Inc.

Reconciliation of GAAP to Pro Forma Net Income

(In thousands, except per share data)

(Unaudited)

	Three Months Ended September 30,						Twelve Months Ended September 30,
	2004			2003			2004			2003
Net income	$	4,521		$	2,538		$	19,245		$	7,343
Adjustments to reported net income to arrive at pro forma results:
Add: non-recurring effect of acquisitions		—			—						520
Add: amortization of purchased intangible assets from acquisitions		897			1,457			4,030			4,366
Add: deferred stock-based compensation		18			119			243			328
Add: M&A transaction costs		1,757			—			1,757			—
Pro forma tax adjustment		(1,110	)		(1,418	)		(7,898	)		(4,359	)
Pro forma net income	$	6,083		$	2,696		$	17,377		$	8,198
Pro forma net income per share - basic	$	0.26		$	0.12		$	0.76		$	0.42
Pro forma net income per share - diluted	$	0.24		$	0.11		$	0.69		$	0.38
Shares used in per share calculation - basic		23,565			22,027			22,932			19,439
Shares used in per share calculation - diluted		25,764			24,428			25,105			21,690