EXHIBIT 23.1 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in the Registration Statements on Forms S-3 (No. 333-106833) and S-8 (Nos. 333-56322, 333-55974, 333-54188, 333-40154, 333-40152, 333-87322, 333-91124, 333-104925, 333-106683, 333-108334 and 333-111133) of Marvell Technology Group Ltd. of our report dated March 16, 2004 relating to the consolidated financial statements, which appears in this Form 10-K. /s/ PRICEWATERHOUSECOOPERS LLP PricewaterhouseCoopers LLP San Jose, California April 13, 2004