SAN FRANCISCO — Plaintiffs in a multidistrict antitrust class action against a slew of computer chip manufacturers have agreed to settle for just under $77 million, three years after the Justice Department closed without charges a criminal antitrust probe into the SRAM memory market.

In July, Oakland U.S. District Judge Claudia Wilken approved a $37 million settlement with seven defendants. And late Friday, lead plaintiffs firm Burlingame’s Cotchett, Pitre & McCarthy filed its proposed settlement deal with the remaining chip makers in the suit — Samsung Electronics and Cypress Semiconductor Corp. — for $39.5 million.