Exhibit 32.1

OPTi Inc.

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of OPTi Inc. (the “Company”) on Form 10-K for the fiscal year ending March 31, 2007 as filed with the Securities and Exchange Commission on the date hereof (the “Report”). I, Bernard T. Marren, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

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

Date: June 28, 2007

/s/    BERNARD T. MARREN

Bernard T Marren,

Chief Executive Officer