Vicor Corporation Conference Call Notification

ANDOVER, Mass.--July 8, 2005--Vicor Corporation today announced the investor conference call relating to the Company's results for the second quarter ended June 30, 2005 and other business and financial matters relating to the Company, will take place on Monday, July 18, 2005 at 5:00 p.m. Eastern Daylight Time (EDT).

Shareholders interested in participating in the teleconference should call the following telephone number at approximately 4:50 p.m. (EDT) on July 18.

888-339-2688

Passcode: 50416412

Internet users can listen to a real-time audio broadcast of the conference call on the Investor Relations section of Vicor's website at www.vicorpower.com/irwebcast. Please go to the website at least 15 minutes prior to the call to register, download and install any necessary software.

The teleconference will begin promptly at 5:00 p.m. (EDT). For those who cannot participate in the live teleconference, there will be a replay available shortly after the call through August 1, 2005. The replay dial-in number is 888-286-8010 and the Passcode is 27208467. In addition, a webcast replay of the conference call will also be available on the Investor Relations section of Vicor's website at www.vicorpower.com/irwebcast beginning shortly after the conclusion of the call.

The press release and financial statements will be available shortly following their release on July 18, on the Company's website at www.vicorpower.com by going to the Investor Relations section and then to Financial Press Releases.