Marvell Technology 10-Q 2013 Q2 Quarterly report

Exhibit 32.1

CERTIFICATION

I, Sehat Sutardja Ph.D., the President and Chief Executive Officer of Marvell Technology Group Ltd. (the “Company”), certify for the purposes of 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge,

(i) the Quarterly Report of the Company on Form 10-Q for the fiscal quarter ended July 28, 2012 (the “Report”), fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(ii) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Sehat Sutardja

Sehat Sutardja, Ph.D.

President and Chief Executive Officer

Date: September 4, 2012